SSM框架整合

2019年11月13日 阅读数:62
这篇文章主要向大家介绍SSM框架整合,主要内容包括基础应用、实用技巧、原理机制等方面,希望对大家有所帮助。

1.工具IDEA

2.新建maven工程:

3.整合所需jar包:maven引入

单元测试:junitjavascript

日志:logging,logback,css

JSON:jackson-databindhtml

Spring:spring-core,spring-context,spring-test,spring-tx,spring-beans,spring-jdbc,spring-web,spring-webmvc前端

Mybatis:mybatis,mybatis-spring,pagehelper(分页插件)java

Mysql:mysql-connector-javamysql

数据源:druidjquery

JSTL:jstlgit

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>TestSsmProject</groupId>
  <artifactId>TestSsmProject</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>TestSsmProject Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>

    <!-- 实现slf4j接口并整合 -->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.2.2</version>
    </dependency>

    <!-- JSON -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.8.7</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.0.18</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>compile</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.3.10.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.12.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.3.12.RELEASE</version>
      <scope>test</scope>
    </dependency>
    <!-- mybatis分页插件依赖 -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>4.0.0</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-jxpath/commons-jxpath -->
    <dependency>
      <groupId>commons-jxpath</groupId>
      <artifactId>commons-jxpath</artifactId>
      <version>1.3</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.ibatis/ibatis-sqlmap -->
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>24.0-jre</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.codehaus.jackson/jackson-core-asl -->
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-core-asl</artifactId>
      <version>1.9.13</version>
    </dependency>
  </dependencies>

  <build>
    <finalName>TestOneMaven</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.7.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.20.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>
  </build>
</project>
pxm.xml

4.配置文件:github

日志:web

# Global logging configuration
#在开发环境下日志级别要设置成DEBUG,生产环境设置成info或error
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] --> %m%n
log4j.properties

数据库信息:

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/test_crud?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
jdbc.username=root
jdbc.password=root
validationQuery=SELECT 1
db.properties

spring配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--扫描配置文件-->
    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
    <!--扫描-->
    <context:component-scan base-package="xin.mikey.www">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>
    <!--配置数据源-->
    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          init-method="init" destroy-method="close">
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <!-- 初始化链接大小 -->
        <property name="initialSize" value="0" />
        <!-- 链接池最大使用链接数量 -->
        <property name="maxActive" value="20" />
        <!-- 链接池最小空闲 -->
        <property name="minIdle" value="0" />
        <!-- 获取链接最大等待时间 -->
        <property name="maxWait" value="60000" />
        <property name="validationQuery" value="${validationQuery}" />
        <property name="testOnBorrow" value="false" />
        <property name="testOnReturn" value="false" />
        <property name="testWhileIdle" value="true" />
        <!-- 配置间隔多久才进行一次检测,检测须要关闭的空闲链接,单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000" />
        <!-- 配置一个链接在池中最小生存的时间,单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="25200000" />
        <!-- 打开removeAbandoned功能 -->
        <property name="removeAbandoned" value="true" />
        <!-- 1800秒,也就是30分钟 -->
        <property name="removeAbandonedTimeout" value="1800" />
        <!-- 关闭abanded链接时输出错误日志 -->
        <property name="logAbandoned" value="true" />
        <!-- 监控数据库 -->
        <!-- <property name="filters" value="stat" /> -->
        <property name="filters" value="mergeStat" />
    </bean>
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 配置数据库表对应的java实体类 -->
        <property name="typeAliasesPackage" value="xin.mikey.www.pojo" />
        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
        <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>
        <property name="mapperLocations" value="classpath:xin/mikey/www/mapper/*.xml" />
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="xin.mikey.www.mapper" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库链接池 -->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 配置基于注解的声明式事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--扫描配置文件-->
    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
    <!--扫描-->
    <context:component-scan base-package="xin.mikey.www">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>
    <!--配置数据源-->
    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          init-method="init" destroy-method="close">
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <!-- 初始化链接大小 -->
        <property name="initialSize" value="0" />
        <!-- 链接池最大使用链接数量 -->
        <property name="maxActive" value="20" />
        <!-- 链接池最小空闲 -->
        <property name="minIdle" value="0" />
        <!-- 获取链接最大等待时间 -->
        <property name="maxWait" value="60000" />
        <property name="validationQuery" value="${validationQuery}" />
        <property name="testOnBorrow" value="false" />
        <property name="testOnReturn" value="false" />
        <property name="testWhileIdle" value="true" />
        <!-- 配置间隔多久才进行一次检测,检测须要关闭的空闲链接,单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000" />
        <!-- 配置一个链接在池中最小生存的时间,单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="25200000" />
        <!-- 打开removeAbandoned功能 -->
        <property name="removeAbandoned" value="true" />
        <!-- 1800秒,也就是30分钟 -->
        <property name="removeAbandonedTimeout" value="1800" />
        <!-- 关闭abanded链接时输出错误日志 -->
        <property name="logAbandoned" value="true" />
        <!-- 监控数据库 -->
        <!-- <property name="filters" value="stat" /> -->
        <property name="filters" value="mergeStat" />
    </bean>
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 配置数据库表对应的java实体类 -->
        <property name="typeAliasesPackage" value="xin.mikey.www.pojo" />
        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
        <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>
        <property name="mapperLocations" value="classpath:xin/mikey/www/mapper/*.xml" />
    </bean>
<!--动态代理自动生成mapper的实现类-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="xin.mikey.www.mapper" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库链接池 -->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 配置基于注解的声明式事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
applicationContext.xml

 

SprintMvc配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

    <!-- 配置自动扫描的包 -->
    <context:component-scan base-package="xin.mikey.www.controller"></context:component-scan>

    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!--
        default-servlet-handler 将在 SpringMVC 上下文中定义一个 DefaultServletHttpRequestHandler,
        它会对进入 DispatcherServlet 的请求进行筛查, 若是发现是没有通过映射的请求, 就将该请求交由 WEB 应用服务器默认的
        Servlet 处理. 若是不是静态资源的请求,才由 DispatcherServlet 继续处理

        通常 WEB 应用服务器默认的 Servlet 的名称都是 default.
        若所使用的 WEB 服务器的默认 Servlet 名称不是 default,则须要经过 default-servlet-name 属性显式指定

    -->
    <mvc:default-servlet-handler/>

    <mvc:annotation-driven/>

    <!--<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">-->
        <!--<property name="converters">-->
            <!--<set>-->
                <!--<ref bean="employeeConverter"/>-->
            <!--</set>-->
        <!--</property>-->
    <!--</bean>-->
    <!--<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">-->
        <!--<property name="basename" value="i18n"></property>-->
    <!--</bean>-->

    <!--<mvc:view-controller path="/i18n" view-name="i18n"></mvc:view-controller>-->

    <!--<mvc:view-controller path="/i18n2" view-name="i18n2"></mvc:view-controller>-->

    <bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver"
    ></bean>

    <mvc:interceptors>
        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"></bean>
        <!--<bean class="com.mikey.www.interceptors.FirstInterceptor"></bean>-->

        <!--配置拦截器(不)做用的路径-->
        <!--<mvc:interceptor>-->
            <!--<mvc:mapping path="/emps"/>-->
            <!--<bean class="com.mikey.www.interceptors.SecondInterceptor"></bean>-->
        <!--</mvc:interceptor>-->
    </mvc:interceptors>

    <!--配置MultipartResolver-->
    <!--<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">-->
        <!--<property name="defaultEncoding" value="UTF-8"></property>-->
        <!--<property name="maxUploadSize" value="1024000"></property>-->
    <!--</bean>-->

    <!--配置自定义拦截器-->
    <!--<bean class="com.mikey.www.interceptors.FirstInterceptor"></bean>-->
    <!--&lt;!&ndash;配置使用simplemappingException&ndash;&gt;-->
    <!--<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">-->
        <!--&lt;!&ndash;<property name="exceptionAttribute" value="ex"></property>&ndash;&gt;-->
        <!--<property name="exceptionMappings">-->
            <!--<props>-->
                <!--<prop key="java.lang.ArrayIndexOutOfBoundsException">error</prop>-->
            <!--</props>-->
        <!--</property>-->
    <!--</bean>-->

</beans>
springmvc.xml

Mybatis全局配置文件:

<settings>
        <!-- 打印查询语句 -->
        <setting name="logImpl" value="STDOUT_LOGGING" />
</settings>

 

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <typeAliases>
        <package name="mikey.www.pojo"></package>
    </typeAliases>
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageHelper">
            <!-- 设置数据库类型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL六种数据库-->
            <property name="dialect" value="mysql"/>
        </plugin>
    </plugins>
</configuration>
SqlMapConfig.xml

配置web.xml文件:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         id="WebApp_ID" version="2.5">

  <!-- 配置 SpringMVC 的 DispatcherServlet -->
  <!-- The front controller of this Spring Web application, responsible for handling all application requests -->

  <!--过滤器解决工程编码-->
  <filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>


  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext</param-value>
  </context-param>
  <servlet>
    <servlet-name>springDispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc/springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <!-- Map all requests to the DispatcherServlet for handling -->
  <servlet-mapping>
    <servlet-name>springDispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!-- 配置 HiddenHttpMethodFilter: 把 POST 请求转为 DELETE、PUT 请求 -->
  <filter>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
  </filter>

  <!--放行静态资源文件-->
  <filter-mapping>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>/js/*</url-pattern>
    <url-pattern>/css/*</url-pattern>
    <url-pattern>/fonts/*</url-pattern>
    <url-pattern>/images/*</url-pattern>
  </servlet-mapping>

</web-app>
web.xml

 

项目结构目录:

编写mapper接口及映射文件:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="xin.mikey.www.mapper.UserMapper">
    <!--<cache type="org.mybatis.caches.ehcache.EhcacheCache"/>-->

    <resultMap id="userMap" type="xin.mikey.www.pojo.User">
        <id column="id" property="id"/>
        <result column="user_id" property="userid"/>
        <result column="user_sex" property="sex"/>
        <result column="user_age" property="age"/>
        <result column="user_email" property="email"/>
        <result column="user_name" property="username"/>
        <result column="user_pwd" property="password"/>
    </resultMap>
    <select id="findUserById" parameterType="String" resultMap="userMap">
        SELECT * FROM user WHERE id=#{value}
    </select>

    <insert id="saveUser" parameterType="user" >
        insert user(id,user_id,user_sex,user_age,user_email,user_name,user_pwd) value(#{id},#{userid},#{sex},#{age},#{email},#{username},#{password})
    </insert>
    <select id="getAllUser" resultMap="userMap">
        SELECT * from USER
    </select>
    <select id="findUserByIds" parameterType="int" resultMap="userMap">
        SELECT * FROM user where
        <!--SELECT * FROM `user` WHERE user_id=1 or user_id=2;-->
        <foreach collection="array" item="id" separator="or">
            user_id=#{id}
        </foreach>
    </select>
    <!--update-->
    <update id="updateUser" parameterType="user">
        update user set id=#{id},user_id=#{userid},user_sex=#{sex},user_age=#{age},user_email=#{email},user_name=#{username},user_pwd=#{password} where  id=#{id}
    </update>
    <!--delete-->
    <delete id="deleteUser" parameterType="java.lang.String">
        delete from user where id=#{value}
    </delete>
    <!--userLogin-->
    <select id="userLogin" parameterType="user" resultMap="userMap">
        SELECT * from user where user_email=#{usereamil} and user_pwd=#{password}
    </select>
    <!--rigister-->
    <insert id="userRegister" parameterType="user">
        insert USER(id,user_email,user_pwd) value (#{id},#{email},#{password})
    </insert>
</mapper>
UserMapper.xml
package xin.mikey.www.mapper;
import org.springframework.stereotype.Repository;
import xin.mikey.www.pojo.User;

import java.util.List;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 18:34
 * @Version 1.0
 */
@Repository
public interface UserMapper {
   public User findUserById(String id) throws Exception;
   public List<User> findUserByIds(int[] ids) throws Exception;
   public void saveUser(User user) throws  Exception;
   public void deleteUser(String id) throws Exception;
   public void updateUser(User user) throws Exception;
   public List<User> getAllUser() throws Exception;
}
userMapper.java

pojo类:

package xin.mikey.www.pojo;

import org.springframework.stereotype.Component;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 18:32
 * @Version 1.0
 */
@Component
public class User {
    private String id;
    private Integer userid;
    private String username;
    private Integer sex;
    private Integer age;
    private String email;
    private String password;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public Integer getUserid() {
        return userid;
    }

    public void setUserid(Integer userid) {
        this.userid = userid;
    }

    public Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    @Override
    public String toString() {
        return "User{" +
                "id='" + id + '\'' +
                ", userid='" + userid + '\'' +
                ", username='" + username + '\'' +
                ", sex=" + sex +
                ", age=" + age +
                ", email='" + email + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}
User.java

DAO层:

package xin.mikey.www.dao.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import xin.mikey.www.dao.UserDao;
import xin.mikey.www.mapper.UserMapper;
import xin.mikey.www.pojo.User;

import java.util.List;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 19:14
 * @Version 1.0
 */
@Repository
public class UserDaoImpl  implements UserDao {
    @Autowired
    private UserMapper userMapper;

    @Override
    public User findUserById(String id) throws Exception {
        return userMapper.findUserById(id);
    }

    @Override
    public List<User> findUserByIds(int[] ids) throws Exception {
        return userMapper.findUserByIds(ids);
    }

    @Override
    public void saveUser(User user) throws Exception {

        userMapper.saveUser(user);
    }

    @Override
    public void deleteUser(String id) throws Exception {
        userMapper.deleteUser(id);
    }

    @Override
    public void updateUser(User user) throws Exception {
        userMapper.updateUser(user);
    }

    @Override
    public List<User> getAllUser() throws Exception {
        List<User> allUser =userMapper.getAllUser();
        return allUser;
    }

}
UserDaoImpl.java
package xin.mikey.www.dao;
import org.springframework.stereotype.Repository;
import xin.mikey.www.pojo.User;

import java.util.List;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 19:13
 * @Version 1.0
 */
@Repository
public interface UserDao{
    public User findUserById(String id) throws Exception;
    public List<User> findUserByIds(int[] ids) throws Exception;
    public void saveUser(User user) throws  Exception;
    public void deleteUser(String id) throws Exception;
    public void updateUser(User user) throws Exception;
    public List<User> getAllUser() throws Exception;
}
UserDao

Service层:

package xin.mikey.www.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import xin.mikey.www.dao.UserDao;
import xin.mikey.www.pojo.User;
import xin.mikey.www.service.UserService;

import java.util.List;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 19:30
 * @Version 1.0
 */
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;
    @Override
    public User findUserById(String id) throws Exception {
        return userDao.findUserById(id);
    }

    @Override
    public List<User> findUserByIds(int[] ids) throws Exception {
        return this.userDao.findUserByIds(ids);
    }

    @Override
    public void saveUser(User user) throws Exception {
        this.userDao.saveUser(user);
    }

    @Override
    public void deleteUser(String id) throws Exception {
        this.userDao.deleteUser(id);
    }

    @Override
    public void updateUser(User user) throws Exception {
            this.userDao.updateUser(user);
    }

    @Override
    public List<User> getAllUser() throws Exception {
        return this.userDao.getAllUser();
    }
}
UserServiceImpl.java
package xin.mikey.www.service;
import org.springframework.stereotype.Service;
import xin.mikey.www.pojo.User;

import java.util.List;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 19:29
 * @Version 1.0
 */
@Service
public interface UserService {
    public User findUserById(String id) throws Exception;
    public List<User> findUserByIds(int[] ids) throws Exception;
    public void saveUser(User user) throws  Exception;
    public void deleteUser(String id) throws Exception;
    public void updateUser(User user) throws Exception;
    public List<User> getAllUser() throws Exception;
}
UserService.java

Controller层:

package xin.mikey.www.controller;

import com.sun.org.glassfish.gmbal.ParameterNames;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestParam;
import xin.mikey.www.pojo.User;

import java.util.List;
import java.util.Map;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 19:13
 * @Version 1.0
 */
@Controller
public interface UserController {
    /**
     * 经过id查找用户信息
     * @return
     * @throws Exception
     */
    public String findUserById(@RequestParam("userid") String id,Map<String,Object> map) throws Exception;
    public String findUserByIds(@RequestParam("ids") String ids,Map<String,Object> map) throws Exception;
    public String saveUser(User user,Map<String,Object> map) throws  Exception;
    public String deleteUser(String id,Map<String,Object> map) throws Exception;
    public String updateUser(User user,Map<String,Object> map) throws Exception;

    public String userLogin(@RequestParam("eamil") String email,@RequestParam("password") String pwd,Map<String,Object> map);
}
UserController .java
package xin.mikey.www.controller.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.google.common.collect.Maps;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import xin.mikey.www.controller.UserController;
import xin.mikey.www.pojo.User;
import xin.mikey.www.service.UserService;

import java.util.List;
import java.util.Map;
import java.util.UUID;

/**
 * @author Mikey
 * @Title:
 * @Description:
 * @date 2018/10/15 19:32
 * @Version 1.0
 */

@Controller
@SessionAttributes("user")
@RequestMapping("/user")
public class UserControllerImpl implements UserController {
    private String SCU="success";
    @Qualifier("userServiceImpl")
    @Autowired
    private UserService userService;

    @RequestMapping("/loginUI")
    public String loginUI(){
        System.out.println("loginUI");
        return "login";
    }

    @RequestMapping("/findUserById/{id}")
    public String findUserById(@PathVariable("id") String id, Map<String,Object> map) throws Exception {
        User user= this.userService.findUserById(id);
        map.put("user",user);
        return "edit";
    }

    @Override
    @RequestMapping("/findUserByIds")
    public String findUserByIds(String ids, Map<String,Object> map) throws Exception {
//        this.userService.findUserByIds();
    return null;
    }

    @RequestMapping("/addWork")
    public String addWorkUI(){
        return "addwork";
    }
    @Override
    @RequestMapping("/saveUser")
    public String saveUser(User user, Map<String,Object> map) throws Exception {
        user.setId(UUID.randomUUID().toString());
        user.setPassword("000");
        userService.saveUser(user);
        return "redirect:addWork";
    }

    @Override
    @RequestMapping("/deleteUser/{id}")
    public String deleteUser(@PathVariable("id") String id, Map<String,Object> map) throws Exception {
        System.out.println("ID="+id);
        userService.deleteUser(id);
        return "redirect:/user/getAll";
    }

    @Override
    @RequestMapping(value = "/updateUser",method = RequestMethod.PUT)
    public String updateUser(User user, Map<String,Object> map) throws Exception {
        userService.updateUser(user);
        return "redirect:/user/getAll";
    }
    @Override
    @RequestMapping("/login")
    public String userLogin(String email, String pwd, Map<String, Object> map) {
        System.out.println("Message="+email+"//"+pwd);

        return "main";
    }

    @RequestMapping("/getAll")
    public String getAllUser(Map<String,Object> map){
        List<User> list= null;
        try {
            list = userService.getAllUser();
        } catch (Exception e) {
            e.printStackTrace();
        }
        map.put("users",list);
        return "showAll";
    }

    @RequestMapping("/getAllPage/{str_pageNo}")
    public ModelAndView getAllUserPage(@PathVariable(value = "str_pageNo",required = false) String str_pageNo, Map<String,Object> maps) throws Exception {
        //拿到用户须要的是哪一页的文章数据

        if(str_pageNo == null){
            //开始使用分页插件,准备查询第一页的8条数据
            PageHelper.startPage(1, 8);
        } else{
            //准备查询 第X页 的8条数据
            PageHelper.startPage(Integer.parseInt(str_pageNo), 8);
        }
        //参数Map
        final Map<String,Object> map = Maps.newHashMap();
        //获取全部做者的全部文章
        final List<User> articles = userService.getAllUser();
        //将查询结果放入分页控件中
        final PageInfo<User> pageInfo=new PageInfo<User>(articles);
        //组装数据,在JSP页面能够经过 ${articles} 或者 ${pageInfo}请求获取数据
        map.put("users",articles);
        map.put("pageInfo",pageInfo);
        //返回某个具体的JSP页面,而且携带上map里面的存储的数据
        return new ModelAndView("showAll",map);
    }
}
UserControllerImpl .java

 

 报错:

发现target没有映射文件:

 

解决方法:

 pom文件加入:

<resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
</resources>

整合案例2:

pom.xml文件:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.atguigu</groupId>
    <artifactId>ssm-crud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>


    <!--引入项目依赖的jar包 -->
    <!-- SpringMVC、Spring -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependencies>

        <!--引入pageHelper分页插件 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.0.0</version>
        </dependency>

        <!-- MBG -->
        <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>


        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.7.RELEASE</version>
        </dependency>

        <!-- 返回json字符串的支持 -->
        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.8</version>
        </dependency>

        <!--JSR303数据校验支持;tomcat7及以上的服务器, 
        tomcat7如下的服务器:el表达式。额外给服务器的lib包中替换新的标准的el
        -->
        <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.4.1.Final</version>
        </dependency>


        <!-- Spring-Jdbc -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.7.RELEASE</version>
        </dependency>

        <!--Spring-test -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.3.7.RELEASE</version>
        </dependency>


        <!-- Spring面向切面编程 -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>4.3.7.RELEASE</version>
        </dependency>

        <!--MyBatis -->
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.2</version>
        </dependency>
        <!-- MyBatis整合Spring的适配包 -->
        <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>

        <!-- 数据库链接池、驱动 -->
        <!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.41</version>
        </dependency>
        <!-- (jstl,servlet-api,junit) -->
        <!-- https://mvnrepository.com/artifact/jstl/jstl -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>


        <!-- junit -->
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>




</project>
pom.xml

spring配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <context:component-scan base-package="com.atguigu">
        <context:exclude-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

    <!-- Spring的配置文件,这里主要配置和业务逻辑有关的 -->
    <!--=================== 数据源,事务控制,xxx ================-->
    <context:property-placeholder location="classpath:dbconfig.properties" />
    <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!--================== 配置和MyBatis的整合=============== -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 指定mybatis全局配置文件的位置 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="dataSource" ref="pooledDataSource"></property>
        <!-- 指定mybatis,mapper文件的位置 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
    </bean>

    <!-- 配置扫描器,将mybatis接口的实现加入到ioc容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--扫描全部dao接口的实现,加入到ioc容器中 -->
        <property name="basePackage" value="com.atguigu.crud.dao"></property>
    </bean>
    
    <!-- 配置一个能够执行批量的sqlSession -->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
        <constructor-arg name="executorType" value="BATCH"></constructor-arg>
    </bean>
    <!--=============================================  -->

    <!-- ===============事务控制的配置 ================-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--控制住数据源  -->
        <property name="dataSource" ref="pooledDataSource"></property>
    </bean>
    <!--开启基于注解的事务,使用xml配置形式的事务(必要主要的都是使用配置式)  -->
    <aop:config>
        <!-- 切入点表达式 -->
        <aop:pointcut expression="execution(* com.atguigu.crud.service..*(..))" id="txPoint"/>
        <!-- 配置事务加强 -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
    </aop:config>
    
    <!--配置事务加强,事务如何切入  -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 全部方法都是事务方法 -->
            <tx:method name="*"/>
            <!--以get开始的全部方法  -->
            <tx:method name="get*" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    
    <!-- Spring配置文件的核心点(数据源、与mybatis的整合,事务控制) -->
    
</beans>
applicationContext.xml

springMvc配置文件;

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <!--SpringMVC的配置文件,包含网站跳转逻辑的控制,配置  -->
    <context:component-scan base-package="com.atguigu" use-default-filters="false">
        <!--只扫描控制器。  -->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    
    <!--配置视图解析器,方便页面返回  -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    
    <!--两个标准配置  -->
    <!-- 将springmvc不能处理的请求交给tomcat -->
    <mvc:default-servlet-handler/>
    <!-- 能支持springmvc更高级的一些功能,JSR303校验,快捷的ajax...映射动态请求 -->
    <mvc:annotation-driven/>

</beans>
dispatcherServlet-servlet.xml

myBatis配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
    
    <typeAliases>
        <package name="com.atguigu.crud.bean"/>
    </typeAliases>
    
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageInterceptor">
            <!--分页参数合理化  -->
            <property name="reasonable" value="true"/>
        </plugin>
    </plugins>

</configuration>
mybatis-config.xml

web.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">
    
    <!--一、启动Spring的容器  -->
    <!-- needed for ContextLoaderListener -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <!-- Bootstraps the root web application context before servlet initialization -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <!--二、springmvc的前端控制器,拦截全部请求  -->
    <!-- The front controller of this Spring Web application, responsible for handling all application requests -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Map all requests to the DispatcherServlet for handling -->
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <!-- 三、字符编码过滤器,必定要放在全部过滤器以前 -->
    <filter>
        <filter-name>CharacterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceRequestEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <!-- 四、使用Rest风格的URI,将页面普通的post请求转为指定的delete或者put请求 -->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <filter>
        <filter-name>HttpPutFormContentFilter</filter-name>
        <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HttpPutFormContentFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    
</web-app>
web.xml

 

数据库参数配置:

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_crud
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=123456
dbconfig.properties

日志配置文件:

...................

 

逆向文件:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
  PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>

    <context id="DB2Tables" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!-- 配置数据库链接 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/ssm_crud" userId="root"
            password="123456">
        </jdbcConnection>

        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- 指定javaBean生成的位置 -->
        <javaModelGenerator targetPackage="com.atguigu.crud.bean"
            targetProject=".\src\main\java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!--指定sql映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="mapper" targetProject=".\src\main\resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <!-- 指定dao接口生成的位置,mapper接口 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="com.atguigu.crud.dao" targetProject=".\src\main\java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>


        <!-- table指定每一个表的生成策略 -->
        <table tableName="tbl_emp" domainObjectName="Employee"></table>
        <table tableName="tbl_dept" domainObjectName="Department"></table>
    </context>
</generatorConfiguration>
nbg.xml

 

批量插入数据:

package com.atguigu.crud.test;

import java.util.UUID;

import org.apache.ibatis.session.SqlSession;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.dao.DepartmentMapper;
import com.atguigu.crud.dao.EmployeeMapper;

/**
 * 测试dao层的工做
 * @author lfy
 *推荐Spring的项目就可使用Spring的单元测试,能够自动注入咱们须要的组件
 *一、导入SpringTest模块
 *二、@ContextConfiguration指定Spring配置文件的位置
 *三、直接autowired要使用的组件便可
 */

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:applicationContext.xml"})
public class MapperTest {
    
    @Autowired
    DepartmentMapper departmentMapper;
    
    @Autowired
    EmployeeMapper employeeMapper;
    
    @Autowired
    SqlSession sqlSession;
    
    /**
     * 测试DepartmentMapper
     */
    @Test
    public void testCRUD(){
    /*    //一、建立SpringIOC容器
        ApplicationContext ioc = new ClassPathXmlApplicationContext("applicationContext.xml");
        //二、从容器中获取mapper
        DepartmentMapper bean = ioc.getBean(DepartmentMapper.class);*/
        System.out.println(departmentMapper);
        
        //一、插入几个部门
//        departmentMapper.insertSelective(new Department(null, "开发部"));
//        departmentMapper.insertSelective(new Department(null, "测试部"));
        
        //二、生成员工数据,测试员工插入
        employeeMapper.insertSelective(new Employee(null, "Jerry", "M", "Jerry@atguigu.com", 1));
        
        //三、批量插入多个员工;批量,使用能够执行批量操做的sqlSession。
        
//        for(){
//            employeeMapper.insertSelective(new Employee(null, , "M", "Jerry@atguigu.com", 1));
//        }
        EmployeeMapper mapper = sqlSession.getMapper(EmployeeMapper.class);
        for(int i = 0;i<1000;i++){
            String uid = UUID.randomUUID().toString().substring(0,5)+i;
            mapper.insertSelective(new Employee(null,uid, "M", uid+"@atguigu.com", 1));
        }
        System.out.println("批量完成");
        
    }

}
MapperTest。java

 

测试生成mapper文件:

package com.atguigu.crud.test;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;

public class MBGTest {

    public static void main(String[] args) throws Exception {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("mbg.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
                callback, warnings);
        myBatisGenerator.generate(null);
    }
}
MBGTest。java

 

Mapper文件:

package com.atguigu.crud.dao;

import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.bean.EmployeeExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;

public interface EmployeeMapper {
    long countByExample(EmployeeExample example);

    int deleteByExample(EmployeeExample example);

    int deleteByPrimaryKey(Integer empId);

    int insert(Employee record);

    int insertSelective(Employee record);

    List<Employee> selectByExample(EmployeeExample example);

    Employee selectByPrimaryKey(Integer empId);
    
    List<Employee> selectByExampleWithDept(EmployeeExample example);

    Employee selectByPrimaryKeyWithDept(Integer empId);

    int updateByExampleSelective(@Param("record") Employee record, @Param("example") EmployeeExample example);

    int updateByExample(@Param("record") Employee record, @Param("example") EmployeeExample example);

    int updateByPrimaryKeySelective(Employee record);

    int updateByPrimaryKey(Employee record);
}
EmployeeMapper.java
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.atguigu.crud.dao.EmployeeMapper">
  <resultMap id="BaseResultMap" type="com.atguigu.crud.bean.Employee">
    <id column="emp_id" jdbcType="INTEGER" property="empId" />
    <result column="emp_name" jdbcType="VARCHAR" property="empName" />
    <result column="gender" jdbcType="CHAR" property="gender" />
    <result column="email" jdbcType="VARCHAR" property="email" />
    <result column="d_id" jdbcType="INTEGER" property="dId" />
  </resultMap>
  <resultMap type="com.atguigu.crud.bean.Employee" id="WithDeptResultMap">
      <id column="emp_id" jdbcType="INTEGER" property="empId" />
    <result column="emp_name" jdbcType="VARCHAR" property="empName" />
    <result column="gender" jdbcType="CHAR" property="gender" />
    <result column="email" jdbcType="VARCHAR" property="email" />
    <result column="d_id" jdbcType="INTEGER" property="dId" />
    <!-- 指定联合查询出的部门字段的封装 -->
    <association property="department" javaType="com.atguigu.crud.bean.Department">
        <id column="dept_id" property="deptId"/>
        <result column="dept_name" property="deptName"/>
    </association>
  </resultMap>
  <sql id="Example_Where_Clause">
    <where>
      <foreach collection="oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <foreach collection="criteria.criteria" item="criterion">
              <choose>
                <when test="criterion.noValue">
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue">
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue">
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue">
                  and ${criterion.condition}
                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause">
    <where>
      <foreach collection="example.oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <foreach collection="criteria.criteria" item="criterion">
              <choose>
                <when test="criterion.noValue">
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue">
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue">
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue">
                  and ${criterion.condition}
                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List">
    emp_id, emp_name, gender, email, d_id
  </sql>
  <sql id="WithDept_Column_List">
      e.emp_id, e.emp_name, e.gender, e.email, e.d_id,d.dept_id,d.dept_name
  </sql>
  <!--   List<Employee> selectByExampleWithDept(EmployeeExample example);
    Employee selectByPrimaryKeyWithDept(Integer empId); 
    -->
   <!-- 查询员工同时带部门信息 -->
  <select id="selectByExampleWithDept" resultMap="WithDeptResultMap">
       select
        <if test="distinct">
          distinct
        </if>
        <include refid="WithDept_Column_List" />
        FROM tbl_emp e
        left join tbl_dept d on e.`d_id`=d.`dept_id`
        <if test="_parameter != null">
          <include refid="Example_Where_Clause" />
        </if>
        <if test="orderByClause != null">
          order by ${orderByClause}
        </if>
  </select>
  <select id="selectByPrimaryKeyWithDept" resultMap="WithDeptResultMap">
       select 
    <include refid="WithDept_Column_List" />
    FROM tbl_emp e
    left join tbl_dept d on e.`d_id`=d.`dept_id`
    where emp_id = #{empId,jdbcType=INTEGER}
  </select>
  
  <!-- 查询员工不带部门信息的 -->
  <select id="selectByExample" parameterType="com.atguigu.crud.bean.EmployeeExample" resultMap="BaseResultMap">
    select
    <if test="distinct">
      distinct
    </if>
    <include refid="Base_Column_List" />
    from tbl_emp
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from tbl_emp
    where emp_id = #{empId,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from tbl_emp
    where emp_id = #{empId,jdbcType=INTEGER}
  </delete>
  <delete id="deleteByExample" parameterType="com.atguigu.crud.bean.EmployeeExample">
    delete from tbl_emp
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.atguigu.crud.bean.Employee">
    insert into tbl_emp (emp_id, emp_name, gender, 
      email, d_id)
    values (#{empId,jdbcType=INTEGER}, #{empName,jdbcType=VARCHAR}, #{gender,jdbcType=CHAR}, 
      #{email,jdbcType=VARCHAR}, #{dId,jdbcType=INTEGER})
  </insert>
  <insert id="insertSelective" parameterType="com.atguigu.crud.bean.Employee">
    insert into tbl_emp
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="empId != null">
        emp_id,
      </if>
      <if test="empName != null">
        emp_name,
      </if>
      <if test="gender != null">
        gender,
      </if>
      <if test="email != null">
        email,
      </if>
      <if test="dId != null">
        d_id,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="empId != null">
        #{empId,jdbcType=INTEGER},
      </if>
      <if test="empName != null">
        #{empName,jdbcType=VARCHAR},
      </if>
      <if test="gender != null">
        #{gender,jdbcType=CHAR},
      </if>
      <if test="email != null">
        #{email,jdbcType=VARCHAR},
      </if>
      <if test="dId != null">
        #{dId,jdbcType=INTEGER},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.atguigu.crud.bean.EmployeeExample" resultType="java.lang.Long">
    select count(*) from tbl_emp
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map">
    update tbl_emp
    <set>
      <if test="record.empId != null">
        emp_id = #{record.empId,jdbcType=INTEGER},
      </if>
      <if test="record.empName != null">
        emp_name = #{record.empName,jdbcType=VARCHAR},
      </if>
      <if test="record.gender != null">
        gender = #{record.gender,jdbcType=CHAR},
      </if>
      <if test="record.email != null">
        email = #{record.email,jdbcType=VARCHAR},
      </if>
      <if test="record.dId != null">
        d_id = #{record.dId,jdbcType=INTEGER},
      </if>
    </set>
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map">
    update tbl_emp
    set emp_id = #{record.empId,jdbcType=INTEGER},
      emp_name = #{record.empName,jdbcType=VARCHAR},
      gender = #{record.gender,jdbcType=CHAR},
      email = #{record.email,jdbcType=VARCHAR},
      d_id = #{record.dId,jdbcType=INTEGER}
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.atguigu.crud.bean.Employee">
    update tbl_emp
    <set>
      <if test="empName != null">
        emp_name = #{empName,jdbcType=VARCHAR},
      </if>
      <if test="gender != null">
        gender = #{gender,jdbcType=CHAR},
      </if>
      <if test="email != null">
        email = #{email,jdbcType=VARCHAR},
      </if>
      <if test="dId != null">
        d_id = #{dId,jdbcType=INTEGER},
      </if>
    </set>
    where emp_id = #{empId,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.atguigu.crud.bean.Employee">
    update tbl_emp
    set emp_name = #{empName,jdbcType=VARCHAR},
      gender = #{gender,jdbcType=CHAR},
      email = #{email,jdbcType=VARCHAR},
      d_id = #{dId,jdbcType=INTEGER}
    where emp_id = #{empId,jdbcType=INTEGER}
  </update>
</mapper>
EmployeeMapper.xml

 

package com.atguigu.crud.dao;

import com.atguigu.crud.bean.Department;
import com.atguigu.crud.bean.DepartmentExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;

public interface DepartmentMapper {
    long countByExample(DepartmentExample example);

    int deleteByExample(DepartmentExample example);

    int deleteByPrimaryKey(Integer deptId);

    int insert(Department record);

    int insertSelective(Department record);

    List<Department> selectByExample(DepartmentExample example);

    Department selectByPrimaryKey(Integer deptId);

    int updateByExampleSelective(@Param("record") Department record, @Param("example") DepartmentExample example);

    int updateByExample(@Param("record") Department record, @Param("example") DepartmentExample example);

    int updateByPrimaryKeySelective(Department record);

    int updateByPrimaryKey(Department record);
}
DepartmentMapper.java
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.atguigu.crud.dao.DepartmentMapper">
  <resultMap id="BaseResultMap" type="com.atguigu.crud.bean.Department">
    <id column="dept_id" jdbcType="INTEGER" property="deptId" />
    <result column="dept_name" jdbcType="VARCHAR" property="deptName" />
  </resultMap>
  <sql id="Example_Where_Clause">
    <where>
      <foreach collection="oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <foreach collection="criteria.criteria" item="criterion">
              <choose>
                <when test="criterion.noValue">
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue">
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue">
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue">
                  and ${criterion.condition}
                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause">
    <where>
      <foreach collection="example.oredCriteria" item="criteria" separator="or">
        <if test="criteria.valid">
          <trim prefix="(" prefixOverrides="and" suffix=")">
            <foreach collection="criteria.criteria" item="criterion">
              <choose>
                <when test="criterion.noValue">
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue">
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue">
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue">
                  and ${criterion.condition}
                  <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List">
    dept_id, dept_name
  </sql>
  <select id="selectByExample" parameterType="com.atguigu.crud.bean.DepartmentExample" resultMap="BaseResultMap">
    select
    <if test="distinct">
      distinct
    </if>
    <include refid="Base_Column_List" />
    from tbl_dept
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null">
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from tbl_dept
    where dept_id = #{deptId,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from tbl_dept
    where dept_id = #{deptId,jdbcType=INTEGER}
  </delete>
  <delete id="deleteByExample" parameterType="com.atguigu.crud.bean.DepartmentExample">
    delete from tbl_dept
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.atguigu.crud.bean.Department">
    insert into tbl_dept (dept_id, dept_name)
    values (#{deptId,jdbcType=INTEGER}, #{deptName,jdbcType=VARCHAR})
  </insert>
  <insert id="insertSelective" parameterType="com.atguigu.crud.bean.Department">
    insert into tbl_dept
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="deptId != null">
        dept_id,
      </if>
      <if test="deptName != null">
        dept_name,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="deptId != null">
        #{deptId,jdbcType=INTEGER},
      </if>
      <if test="deptName != null">
        #{deptName,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.atguigu.crud.bean.DepartmentExample" resultType="java.lang.Long">
    select count(*) from tbl_dept
    <if test="_parameter != null">
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map">
    update tbl_dept
    <set>
      <if test="record.deptId != null">
        dept_id = #{record.deptId,jdbcType=INTEGER},
      </if>
      <if test="record.deptName != null">
        dept_name = #{record.deptName,jdbcType=VARCHAR},
      </if>
    </set>
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map">
    update tbl_dept
    set dept_id = #{record.deptId,jdbcType=INTEGER},
      dept_name = #{record.deptName,jdbcType=VARCHAR}
    <if test="_parameter != null">
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.atguigu.crud.bean.Department">
    update tbl_dept
    <set>
      <if test="deptName != null">
        dept_name = #{deptName,jdbcType=VARCHAR},
      </if>
    </set>
    where dept_id = #{deptId,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.atguigu.crud.bean.Department">
    update tbl_dept
    set dept_name = #{deptName,jdbcType=VARCHAR}
    where dept_id = #{deptId,jdbcType=INTEGER}
  </update>
</mapper>
DepartMapper.xml

 

 

pojo类:

package com.atguigu.crud.bean;

import java.util.HashMap;
import java.util.Map;

/**
 * 通用的返回的类
 * 
 * @author lfy
 * 
 */
public class Msg {
    //状态码   100-成功    200-失败
    private int code;
    //提示信息
    private String msg;
    
    //用户要返回给浏览器的数据
    private Map<String, Object> extend = new HashMap<String, Object>();

    public static Msg success(){
        Msg result = new Msg();
        result.setCode(100);
        result.setMsg("处理成功!");
        return result;
    }
    
    public static Msg fail(){
        Msg result = new Msg();
        result.setCode(200);
        result.setMsg("处理失败!");
        return result;
    }
    
    public Msg add(String key,Object value){
        this.getExtend().put(key, value);
        return this;
    }
    
    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Map<String, Object> getExtend() {
        return extend;
    }

    public void setExtend(Map<String, Object> extend) {
        this.extend = extend;
    }
    
    
}
Msg.java

 

package com.atguigu.crud.bean;

import java.util.ArrayList;
import java.util.List;

public class EmployeeExample {
    protected String orderByClause;

    protected boolean distinct;

    protected List<Criteria> oredCriteria;

    public EmployeeExample() {
        oredCriteria = new ArrayList<Criteria>();
    }

    public void setOrderByClause(String orderByClause) {
        this.orderByClause = orderByClause;
    }

    public String getOrderByClause() {
        return orderByClause;
    }

    public void setDistinct(boolean distinct) {
        this.distinct = distinct;
    }

    public boolean isDistinct() {
        return distinct;
    }

    public List<Criteria> getOredCriteria() {
        return oredCriteria;
    }

    public void or(Criteria criteria) {
        oredCriteria.add(criteria);
    }

    public Criteria or() {
        Criteria criteria = createCriteriaInternal();
        oredCriteria.add(criteria);
        return criteria;
    }

    public Criteria createCriteria() {
        Criteria criteria = createCriteriaInternal();
        if (oredCriteria.size() == 0) {
            oredCriteria.add(criteria);
        }
        return criteria;
    }

    protected Criteria createCriteriaInternal() {
        Criteria criteria = new Criteria();
        return criteria;
    }

    public void clear() {
        oredCriteria.clear();
        orderByClause = null;
        distinct = false;
    }

    protected abstract static class GeneratedCriteria {
        protected List<Criterion> criteria;

        protected GeneratedCriteria() {
            super();
            criteria = new ArrayList<Criterion>();
        }

        public boolean isValid() {
            return criteria.size() > 0;
        }

        public List<Criterion> getAllCriteria() {
            return criteria;
        }

        public List<Criterion> getCriteria() {
            return criteria;
        }

        protected void addCriterion(String condition) {
            if (condition == null) {
                throw new RuntimeException("Value for condition cannot be null");
            }
            criteria.add(new Criterion(condition));
        }

        protected void addCriterion(String condition, Object value, String property) {
            if (value == null) {
                throw new RuntimeException("Value for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value));
        }

        protected void addCriterion(String condition, Object value1, Object value2, String property) {
            if (value1 == null || value2 == null) {
                throw new RuntimeException("Between values for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value1, value2));
        }

        public Criteria andEmpIdIsNull() {
            addCriterion("emp_id is null");
            return (Criteria) this;
        }

        public Criteria andEmpIdIsNotNull() {
            addCriterion("emp_id is not null");
            return (Criteria) this;
        }

        public Criteria andEmpIdEqualTo(Integer value) {
            addCriterion("emp_id =", value, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdNotEqualTo(Integer value) {
            addCriterion("emp_id <>", value, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdGreaterThan(Integer value) {
            addCriterion("emp_id >", value, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdGreaterThanOrEqualTo(Integer value) {
            addCriterion("emp_id >=", value, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdLessThan(Integer value) {
            addCriterion("emp_id <", value, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdLessThanOrEqualTo(Integer value) {
            addCriterion("emp_id <=", value, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdIn(List<Integer> values) {
            addCriterion("emp_id in", values, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdNotIn(List<Integer> values) {
            addCriterion("emp_id not in", values, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdBetween(Integer value1, Integer value2) {
            addCriterion("emp_id between", value1, value2, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpIdNotBetween(Integer value1, Integer value2) {
            addCriterion("emp_id not between", value1, value2, "empId");
            return (Criteria) this;
        }

        public Criteria andEmpNameIsNull() {
            addCriterion("emp_name is null");
            return (Criteria) this;
        }

        public Criteria andEmpNameIsNotNull() {
            addCriterion("emp_name is not null");
            return (Criteria) this;
        }

        public Criteria andEmpNameEqualTo(String value) {
            addCriterion("emp_name =", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameNotEqualTo(String value) {
            addCriterion("emp_name <>", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameGreaterThan(String value) {
            addCriterion("emp_name >", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameGreaterThanOrEqualTo(String value) {
            addCriterion("emp_name >=", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameLessThan(String value) {
            addCriterion("emp_name <", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameLessThanOrEqualTo(String value) {
            addCriterion("emp_name <=", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameLike(String value) {
            addCriterion("emp_name like", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameNotLike(String value) {
            addCriterion("emp_name not like", value, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameIn(List<String> values) {
            addCriterion("emp_name in", values, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameNotIn(List<String> values) {
            addCriterion("emp_name not in", values, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameBetween(String value1, String value2) {
            addCriterion("emp_name between", value1, value2, "empName");
            return (Criteria) this;
        }

        public Criteria andEmpNameNotBetween(String value1, String value2) {
            addCriterion("emp_name not between", value1, value2, "empName");
            return (Criteria) this;
        }

        public Criteria andGenderIsNull() {
            addCriterion("gender is null");
            return (Criteria) this;
        }

        public Criteria andGenderIsNotNull() {
            addCriterion("gender is not null");
            return (Criteria) this;
        }

        public Criteria andGenderEqualTo(String value) {
            addCriterion("gender =", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderNotEqualTo(String value) {
            addCriterion("gender <>", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderGreaterThan(String value) {
            addCriterion("gender >", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderGreaterThanOrEqualTo(String value) {
            addCriterion("gender >=", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderLessThan(String value) {
            addCriterion("gender <", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderLessThanOrEqualTo(String value) {
            addCriterion("gender <=", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderLike(String value) {
            addCriterion("gender like", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderNotLike(String value) {
            addCriterion("gender not like", value, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderIn(List<String> values) {
            addCriterion("gender in", values, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderNotIn(List<String> values) {
            addCriterion("gender not in", values, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderBetween(String value1, String value2) {
            addCriterion("gender between", value1, value2, "gender");
            return (Criteria) this;
        }

        public Criteria andGenderNotBetween(String value1, String value2) {
            addCriterion("gender not between", value1, value2, "gender");
            return (Criteria) this;
        }

        public Criteria andEmailIsNull() {
            addCriterion("email is null");
            return (Criteria) this;
        }

        public Criteria andEmailIsNotNull() {
            addCriterion("email is not null");
            return (Criteria) this;
        }

        public Criteria andEmailEqualTo(String value) {
            addCriterion("email =", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailNotEqualTo(String value) {
            addCriterion("email <>", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailGreaterThan(String value) {
            addCriterion("email >", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailGreaterThanOrEqualTo(String value) {
            addCriterion("email >=", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailLessThan(String value) {
            addCriterion("email <", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailLessThanOrEqualTo(String value) {
            addCriterion("email <=", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailLike(String value) {
            addCriterion("email like", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailNotLike(String value) {
            addCriterion("email not like", value, "email");
            return (Criteria) this;
        }

        public Criteria andEmailIn(List<String> values) {
            addCriterion("email in", values, "email");
            return (Criteria) this;
        }

        public Criteria andEmailNotIn(List<String> values) {
            addCriterion("email not in", values, "email");
            return (Criteria) this;
        }

        public Criteria andEmailBetween(String value1, String value2) {
            addCriterion("email between", value1, value2, "email");
            return (Criteria) this;
        }

        public Criteria andEmailNotBetween(String value1, String value2) {
            addCriterion("email not between", value1, value2, "email");
            return (Criteria) this;
        }

        public Criteria andDIdIsNull() {
            addCriterion("d_id is null");
            return (Criteria) this;
        }

        public Criteria andDIdIsNotNull() {
            addCriterion("d_id is not null");
            return (Criteria) this;
        }

        public Criteria andDIdEqualTo(Integer value) {
            addCriterion("d_id =", value, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdNotEqualTo(Integer value) {
            addCriterion("d_id <>", value, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdGreaterThan(Integer value) {
            addCriterion("d_id >", value, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdGreaterThanOrEqualTo(Integer value) {
            addCriterion("d_id >=", value, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdLessThan(Integer value) {
            addCriterion("d_id <", value, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdLessThanOrEqualTo(Integer value) {
            addCriterion("d_id <=", value, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdIn(List<Integer> values) {
            addCriterion("d_id in", values, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdNotIn(List<Integer> values) {
            addCriterion("d_id not in", values, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdBetween(Integer value1, Integer value2) {
            addCriterion("d_id between", value1, value2, "dId");
            return (Criteria) this;
        }

        public Criteria andDIdNotBetween(Integer value1, Integer value2) {
            addCriterion("d_id not between", value1, value2, "dId");
            return (Criteria) this;
        }
    }

    public static class Criteria extends GeneratedCriteria {

        protected Criteria() {
            super();
        }
    }

    public static class Criterion {
        private String condition;

        private Object value;

        private Object secondValue;

        private boolean noValue;

        private boolean singleValue;

        private boolean betweenValue;

        private boolean listValue;

        private String typeHandler;

        public String getCondition() {
            return condition;
        }

        public Object getValue() {
            return value;
        }

        public Object getSecondValue() {
            return secondValue;
        }

        public boolean isNoValue() {
            return noValue;
        }

        public boolean isSingleValue() {
            return singleValue;
        }

        public boolean isBetweenValue() {
            return betweenValue;
        }

        public boolean isListValue() {
            return listValue;
        }

        public String getTypeHandler() {
            return typeHandler;
        }

        protected Criterion(String condition) {
            super();
            this.condition = condition;
            this.typeHandler = null;
            this.noValue = true;
        }

        protected Criterion(String condition, Object value, String typeHandler) {
            super();
            this.condition = condition;
            this.value = value;
            this.typeHandler = typeHandler;
            if (value instanceof List<?>) {
                this.listValue = true;
            } else {
                this.singleValue = true;
            }
        }

        protected Criterion(String condition, Object value) {
            this(condition, value, null);
        }

        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
            super();
            this.condition = condition;
            this.value = value;
            this.secondValue = secondValue;
            this.typeHandler = typeHandler;
            this.betweenValue = true;
        }

        protected Criterion(String condition, Object value, Object secondValue) {
            this(condition, value, secondValue, null);
        }
    }
}
EmployeeExample .java

 

package com.atguigu.crud.bean;

import javax.validation.constraints.Pattern;

import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.Length;


public class Employee {
    private Integer empId;

    @Pattern(regexp="(^[a-zA-Z0-9_-]{6,16}$)|(^[\u2E80-\u9FFF]{2,5})"
            ,message="用户名必须是2-5位中文或者6-16位英文和数字的组合")
    private String empName;

    private String gender;

    //@Email
    @Pattern(regexp="^([a-z0-9_\\.-]+)@([\\da-z\\.-]+)\\.([a-z\\.]{2,6})$",
            message="邮箱格式不正确")
    private String email;

    private Integer dId;
    
    //但愿查询员工的同时部门信息也是查询好的
    private Department department;
    

    
    @Override
    public String toString() {
        return "Employee [empId=" + empId + ", empName=" + empName
                + ", gender=" + gender + ", email=" + email + ", dId=" + dId
                + "]";
    }

    public Employee() {
        super();
    }

    public Employee(Integer empId, String empName, String gender, String email,
            Integer dId) {
        super();
        this.empId = empId;
        this.empName = empName;
        this.gender = gender;
        this.email = email;
        this.dId = dId;
    }

    public Department getDepartment() {
        return department;
    }

    public void setDepartment(Department department) {
        this.department = department;
    }

    public Integer getEmpId() {
        return empId;
    }

    public void setEmpId(Integer empId) {
        this.empId = empId;
    }

    public String getEmpName() {
        return empName;
    }

    public void setEmpName(String empName) {
        this.empName = empName == null ? null : empName.trim();
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender == null ? null : gender.trim();
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email == null ? null : email.trim();
    }

    public Integer getdId() {
        return dId;
    }

    public void setdId(Integer dId) {
        this.dId = dId;
    }
}
Employee .java

 

package com.atguigu.crud.bean;

import java.util.ArrayList;
import java.util.List;

public class DepartmentExample {
    protected String orderByClause;

    protected boolean distinct;

    protected List<Criteria> oredCriteria;

    public DepartmentExample() {
        oredCriteria = new ArrayList<Criteria>();
    }

    public void setOrderByClause(String orderByClause) {
        this.orderByClause = orderByClause;
    }

    public String getOrderByClause() {
        return orderByClause;
    }

    public void setDistinct(boolean distinct) {
        this.distinct = distinct;
    }

    public boolean isDistinct() {
        return distinct;
    }

    public List<Criteria> getOredCriteria() {
        return oredCriteria;
    }

    public void or(Criteria criteria) {
        oredCriteria.add(criteria);
    }

    public Criteria or() {
        Criteria criteria = createCriteriaInternal();
        oredCriteria.add(criteria);
        return criteria;
    }

    public Criteria createCriteria() {
        Criteria criteria = createCriteriaInternal();
        if (oredCriteria.size() == 0) {
            oredCriteria.add(criteria);
        }
        return criteria;
    }

    protected Criteria createCriteriaInternal() {
        Criteria criteria = new Criteria();
        return criteria;
    }

    public void clear() {
        oredCriteria.clear();
        orderByClause = null;
        distinct = false;
    }

    protected abstract static class GeneratedCriteria {
        protected List<Criterion> criteria;

        protected GeneratedCriteria() {
            super();
            criteria = new ArrayList<Criterion>();
        }

        public boolean isValid() {
            return criteria.size() > 0;
        }

        public List<Criterion> getAllCriteria() {
            return criteria;
        }

        public List<Criterion> getCriteria() {
            return criteria;
        }

        protected void addCriterion(String condition) {
            if (condition == null) {
                throw new RuntimeException("Value for condition cannot be null");
            }
            criteria.add(new Criterion(condition));
        }

        protected void addCriterion(String condition, Object value, String property) {
            if (value == null) {
                throw new RuntimeException("Value for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value));
        }

        protected void addCriterion(String condition, Object value1, Object value2, String property) {
            if (value1 == null || value2 == null) {
                throw new RuntimeException("Between values for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value1, value2));
        }

        public Criteria andDeptIdIsNull() {
            addCriterion("dept_id is null");
            return (Criteria) this;
        }

        public Criteria andDeptIdIsNotNull() {
            addCriterion("dept_id is not null");
            return (Criteria) this;
        }

        public Criteria andDeptIdEqualTo(Integer value) {
            addCriterion("dept_id =", value, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdNotEqualTo(Integer value) {
            addCriterion("dept_id <>", value, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdGreaterThan(Integer value) {
            addCriterion("dept_id >", value, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdGreaterThanOrEqualTo(Integer value) {
            addCriterion("dept_id >=", value, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdLessThan(Integer value) {
            addCriterion("dept_id <", value, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdLessThanOrEqualTo(Integer value) {
            addCriterion("dept_id <=", value, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdIn(List<Integer> values) {
            addCriterion("dept_id in", values, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdNotIn(List<Integer> values) {
            addCriterion("dept_id not in", values, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdBetween(Integer value1, Integer value2) {
            addCriterion("dept_id between", value1, value2, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptIdNotBetween(Integer value1, Integer value2) {
            addCriterion("dept_id not between", value1, value2, "deptId");
            return (Criteria) this;
        }

        public Criteria andDeptNameIsNull() {
            addCriterion("dept_name is null");
            return (Criteria) this;
        }

        public Criteria andDeptNameIsNotNull() {
            addCriterion("dept_name is not null");
            return (Criteria) this;
        }

        public Criteria andDeptNameEqualTo(String value) {
            addCriterion("dept_name =", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameNotEqualTo(String value) {
            addCriterion("dept_name <>", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameGreaterThan(String value) {
            addCriterion("dept_name >", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameGreaterThanOrEqualTo(String value) {
            addCriterion("dept_name >=", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameLessThan(String value) {
            addCriterion("dept_name <", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameLessThanOrEqualTo(String value) {
            addCriterion("dept_name <=", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameLike(String value) {
            addCriterion("dept_name like", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameNotLike(String value) {
            addCriterion("dept_name not like", value, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameIn(List<String> values) {
            addCriterion("dept_name in", values, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameNotIn(List<String> values) {
            addCriterion("dept_name not in", values, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameBetween(String value1, String value2) {
            addCriterion("dept_name between", value1, value2, "deptName");
            return (Criteria) this;
        }

        public Criteria andDeptNameNotBetween(String value1, String value2) {
            addCriterion("dept_name not between", value1, value2, "deptName");
            return (Criteria) this;
        }
    }

    public static class Criteria extends GeneratedCriteria {

        protected Criteria() {
            super();
        }
    }

    public static class Criterion {
        private String condition;

        private Object value;

        private Object secondValue;

        private boolean noValue;

        private boolean singleValue;

        private boolean betweenValue;

        private boolean listValue;

        private String typeHandler;

        public String getCondition() {
            return condition;
        }

        public Object getValue() {
            return value;
        }

        public Object getSecondValue() {
            return secondValue;
        }

        public boolean isNoValue() {
            return noValue;
        }

        public boolean isSingleValue() {
            return singleValue;
        }

        public boolean isBetweenValue() {
            return betweenValue;
        }

        public boolean isListValue() {
            return listValue;
        }

        public String getTypeHandler() {
            return typeHandler;
        }

        protected Criterion(String condition) {
            super();
            this.condition = condition;
            this.typeHandler = null;
            this.noValue = true;
        }

        protected Criterion(String condition, Object value, String typeHandler) {
            super();
            this.condition = condition;
            this.value = value;
            this.typeHandler = typeHandler;
            if (value instanceof List<?>) {
                this.listValue = true;
            } else {
                this.singleValue = true;
            }
        }

        protected Criterion(String condition, Object value) {
            this(condition, value, null);
        }

        protected Criterion(String condition, Object value, Object secondValue, String typeHandler) {
            super();
            this.condition = condition;
            this.value = value;
            this.secondValue = secondValue;
            this.typeHandler = typeHandler;
            this.betweenValue = true;
        }

        protected Criterion(String condition, Object value, Object secondValue) {
            this(condition, value, secondValue, null);
        }
    }
}
DepartmentExample .java

 

package com.atguigu.crud.bean;

public class Department {
    private Integer deptId;

    private String deptName;
    
    

    public Department() {
        super();
        // TODO Auto-generated constructor stub
    }

    public Department(Integer deptId, String deptName) {
        super();
        this.deptId = deptId;
        this.deptName = deptName;
    }

    public Integer getDeptId() {
        return deptId;
    }

    public void setDeptId(Integer deptId) {
        this.deptId = deptId;
    }

    public String getDeptName() {
        return deptName;
    }

    public void setDeptName(String deptName) {
        this.deptName = deptName == null ? null : deptName.trim();
    }
}
Department.java

 

Service层:

package com.atguigu.crud.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.atguigu.crud.bean.Department;
import com.atguigu.crud.dao.DepartmentMapper;

@Service
public class DepartmentService {
    
    @Autowired
    private DepartmentMapper departmentMapper;

    public List<Department> getDepts() {
        // TODO Auto-generated method stub
        List<Department> list = departmentMapper.selectByExample(null);
        return list;
    }

}
DepartmentService
package com.atguigu.crud.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.bean.EmployeeExample;
import com.atguigu.crud.bean.EmployeeExample.Criteria;
import com.atguigu.crud.dao.EmployeeMapper;

@Service
public class EmployeeService {
    
    @Autowired
    EmployeeMapper employeeMapper;

    /**
     * 查询全部员工
     * @return
     */
    public List<Employee> getAll() {
        // TODO Auto-generated method stub
        return employeeMapper.selectByExampleWithDept(null);
    }

    /**
     * 员工保存
     * @param employee
     */
    public void saveEmp(Employee employee) {
        // TODO Auto-generated method stub
        employeeMapper.insertSelective(employee);
    }

    /**
     * 检验用户名是否可用
     * 
     * @param empName
     * @return  true:表明当前姓名可用   fasle:不可用
     */
    public boolean checkUser(String empName) {
        // TODO Auto-generated method stub
        EmployeeExample example = new EmployeeExample();
        Criteria criteria = example.createCriteria();
        criteria.andEmpNameEqualTo(empName);
        long count = employeeMapper.countByExample(example);
        return count == 0;
    }

    /**
     * 按照员工id查询员工
     * @param id
     * @return
     */
    public Employee getEmp(Integer id) {
        // TODO Auto-generated method stub
        Employee employee = employeeMapper.selectByPrimaryKey(id);
        return employee;
    }

    /**
     * 员工更新
     * @param employee
     */
    public void updateEmp(Employee employee) {
        // TODO Auto-generated method stub
        employeeMapper.updateByPrimaryKeySelective(employee);
    }

    /**
     * 员工删除
     * @param id
     */
    public void deleteEmp(Integer id) {
        // TODO Auto-generated method stub
        employeeMapper.deleteByPrimaryKey(id);
    }

    public void deleteBatch(List<Integer> ids) {
        // TODO Auto-generated method stub
        EmployeeExample example = new EmployeeExample();
        Criteria criteria = example.createCriteria();
        //delete from xxx where emp_id in(1,2,3)
        criteria.andEmpIdIn(ids);
        employeeMapper.deleteByExample(example);
    }

}
EmployeeService

 

controller层:

package com.atguigu.crud.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.atguigu.crud.bean.Department;
import com.atguigu.crud.bean.Msg;
import com.atguigu.crud.service.DepartmentService;

/**
 * 处理和部门有关的请求
 * @author lfy
 *
 */
@Controller
public class DepartmentController {
    
    @Autowired
    private DepartmentService departmentService;
    
    /**
     * 返回全部的部门信息
     */
    @RequestMapping("/depts")
    @ResponseBody
    public Msg getDepts(){
        //查出的全部部门信息
        List<Department> list = departmentService.getDepts();
        return Msg.success().add("depts", list);
    }

}
DepartmentController
package com.atguigu.crud.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import com.atguigu.crud.bean.Employee;
import com.atguigu.crud.bean.Msg;
import com.atguigu.crud.service.EmployeeService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;

/**
 * 处理员工CRUD请求
 * 
 * @author lfy
 * 
 */
@Controller
public class EmployeeController {

    @Autowired
    EmployeeService employeeService;
    
    
    /**
     * 单个批量二合一
     * 批量删除:1-2-3
     * 单个删除:1
     * 
     * @param id
     * @return
     */
    @ResponseBody
    @RequestMapping(value="/emp/{ids}",method=RequestMethod.DELETE)
    public Msg deleteEmp(@PathVariable("ids")String ids){
        //批量删除
        if(ids.contains("-")){
            List<Integer> del_ids = new ArrayList<>();
            String[] str_ids = ids.split("-");
            //组装id的集合
            for (String string : str_ids) {
                del_ids.add(Integer.parseInt(string));
            }
            employeeService.deleteBatch(del_ids);
        }else{
            Integer id = Integer.parseInt(ids);
            employeeService.deleteEmp(id);
        }
        return Msg.success();
    }
    
    
    
    /**
     * 若是直接发送ajax=PUT形式的请求
     * 封装的数据
     * Employee 
     * [empId=1014, empName=null, gender=null, email=null, dId=null]
     * 
     * 问题:
     * 请求体中有数据;
     * 可是Employee对象封装不上;
     * update tbl_emp  where emp_id = 1014;
     * 
     * 缘由:
     * Tomcat:
     *         一、将请求体中的数据,封装一个map。
     *         二、request.getParameter("empName")就会从这个map中取值。
     *         三、SpringMVC封装POJO对象的时候。
     *                 会把POJO中每一个属性的值,request.getParamter("email");
     * AJAX发送PUT请求引起的血案:
     *         PUT请求,请求体中的数据,request.getParameter("empName")拿不到
     *         Tomcat一看是PUT不会封装请求体中的数据为map,只有POST形式的请求才封装请求体为map
     * org.apache.catalina.connector.Request--parseParameters() (3111);
     * 
     * protected String parseBodyMethods = "POST";
     * if( !getConnector().isParseBodyMethod(getMethod()) ) {
                success = true;
                return;
            }
     * 
     * 
     * 解决方案;
     * 咱们要能支持直接发送PUT之类的请求还要封装请求体中的数据
     * 一、配置上HttpPutFormContentFilter;
     * 二、他的做用;将请求体中的数据解析包装成一个map。
     * 三、request被从新包装,request.getParameter()被重写,就会从本身封装的map中取数据
     * 员工更新方法
     * @param employee
     * @return
     */
    @ResponseBody
    @RequestMapping(value="/emp/{empId}",method=RequestMethod.PUT)
    public Msg saveEmp(Employee employee,HttpServletRequest request){
        System.out.println("请求体中的值:"+request.getParameter("gender"));
        System.out.println("将要更新的员工数据:"+employee);
        employeeService.updateEmp(employee);
        return Msg.success()    ;
    }
    
    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @RequestMapping(value="/emp/{id}",method=RequestMethod.GET)
    @ResponseBody
    public Msg getEmp(@PathVariable("id")Integer id){
        
        Employee employee = employeeService.getEmp(id);
        return Msg.success().add("emp", employee);
    }
    
    
    /**
     * 检查用户名是否可用
     * @param empName
     * @return
     */
    @ResponseBody
    @RequestMapping("/checkuser")
    public Msg checkuser(@RequestParam("empName")String empName){
        //先判断用户名是不是合法的表达式;
        String regx = "(^[a-zA-Z0-9_-]{6,16}$)|(^[\u2E80-\u9FFF]{2,5})";
        if(!empName.matches(regx)){
            return Msg.fail().add("va_msg", "用户名必须是6-16位数字和字母的组合或者2-5位中文");
        }
        
        //数据库用户名重复校验
        boolean b = employeeService.checkUser(empName);
        if(b){
            return Msg.success();
        }else{
            return Msg.fail().add("va_msg", "用户名不可用");
        }
    }
    
    
    /**
     * 员工保存
     * 一、支持JSR303校验
     * 二、导入Hibernate-Validator
     * 
     * 
     * @return
     */
    @RequestMapping(value="/emp",method=RequestMethod.POST)
    @ResponseBody
    public Msg saveEmp(@Valid Employee employee,BindingResult result){
        if(result.hasErrors()){
            //校验失败,应该返回失败,在模态框中显示校验失败的错误信息
            Map<String, Object> map = new HashMap<>();
            List<FieldError> errors = result.getFieldErrors();
            for (FieldError fieldError : errors) {
                System.out.println("错误的字段名:"+fieldError.getField());
                System.out.println("错误信息:"+fieldError.getDefaultMessage());
                map.put(fieldError.getField(), fieldError.getDefaultMessage());
            }
            return Msg.fail().add("errorFields", map);
        }else{
            employeeService.saveEmp(employee);
            return Msg.success();
        }
        
    }

    /**
     * 导入jackson包。
     * @param pn
     * @return
     */
    @RequestMapping("/emps")
    @ResponseBody
    public Msg getEmpsWithJson(
            @RequestParam(value = "pn", defaultValue = "1") Integer pn) {
        // 这不是一个分页查询
        // 引入PageHelper分页插件
        // 在查询以前只须要调用,传入页码,以及每页的大小
        PageHelper.startPage(pn, 5);
        // startPage后面紧跟的这个查询就是一个分页查询
        List<Employee> emps = employeeService.getAll();
        // 使用pageInfo包装查询后的结果,只须要将pageInfo交给页面就好了。
        // 封装了详细的分页信息,包括有咱们查询出来的数据,传入连续显示的页数
        PageInfo page = new PageInfo(emps, 5);
        return Msg.success().add("pageInfo", page);
    }
    
    /**
     * 查询员工数据(分页查询)
     * 
     * @return
     */
    // @RequestMapping("/emps")
    public String getEmps(
            @RequestParam(value = "pn", defaultValue = "1") Integer pn,
            Model model) {
        // 这不是一个分页查询;
        // 引入PageHelper分页插件
        // 在查询以前只须要调用,传入页码,以及每页的大小
        PageHelper.startPage(pn, 5);
        // startPage后面紧跟的这个查询就是一个分页查询
        List<Employee> emps = employeeService.getAll();
        // 使用pageInfo包装查询后的结果,只须要将pageInfo交给页面就好了。
        // 封装了详细的分页信息,包括有咱们查询出来的数据,传入连续显示的页数
        PageInfo page = new PageInfo(emps, 5);
        model.addAttribute("pageInfo", page);

        return "list";
    }

}
EmployeeController

 

测试类:

package com.atguigu.crud.test;

import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;
import org.springframework.web.context.WebApplicationContext;

import com.atguigu.crud.bean.Employee;
import com.github.pagehelper.PageInfo;

/**
 * 使用Spring测试模块提供的测试请求功能,测试curd请求的正确性
 * Spring4测试的时候,须要servlet3.0的支持
 * @author lfy
 * 
 */
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(locations = { "classpath:applicationContext.xml",
        "file:src/main/webapp/WEB-INF/dispatcherServlet-servlet.xml" })
public class MvcTest {
    // 传入Springmvc的ioc
    @Autowired
    WebApplicationContext context;
    // 虚拟mvc请求,获取处处理结果。
    MockMvc mockMvc;

    @Before
    public void initMokcMvc() {
        mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
    }

    @Test
    public void testPage() throws Exception {
        //模拟请求拿到返回值
        MvcResult result = mockMvc.perform(MockMvcRequestBuilders.get("/emps").param("pn", "5"))
                .andReturn();
        
        //请求成功之后,请求域中会有pageInfo;咱们能够取出pageInfo进行验证
        MockHttpServletRequest request = result.getRequest();
        PageInfo pi = (PageInfo) request.getAttribute("pageInfo");
        System.out.println("当前页码:"+pi.getPageNum());
        System.out.println("总页码:"+pi.getPages());
        System.out.println("总记录数:"+pi.getTotal());
        System.out.println("在页面须要连续显示的页码");
        int[] nums = pi.getNavigatepageNums();
        for (int i : nums) {
            System.out.print(" "+i);
        }
        
        //获取员工数据
        List<Employee> list = pi.getList();
        for (Employee employee : list) {
            System.out.println("ID:"+employee.getEmpId()+"==>Name:"+employee.getEmpName());
        }
        
    }

}
分页测试

视图层:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>员工列表</title>
<%
    pageContext.setAttribute("APP_PATH", request.getContextPath());
%>
<!-- web路径:
不以/开始的相对路径,找资源,以当前资源的路径为基准,常常容易出问题。
以/开始的相对路径,找资源,以服务器的路径为标准(http://localhost:3306);须要加上项目名
        http://localhost:3306/crud
 -->
<script type="text/javascript"
    src="${APP_PATH }/static/js/jquery-1.12.4.min.js"></script>
<link
    href="${APP_PATH }/static/bootstrap-3.3.7-dist/css/bootstrap.min.css"
    rel="stylesheet">
<script
    src="${APP_PATH }/static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
</head>
<body>
<!-- 员工修改的模态框 -->
<div class="modal fade" id="empUpdateModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title">员工修改</h4>
      </div>
      <div class="modal-body">
        <form class="form-horizontal">
          <div class="form-group">
            <label class="col-sm-2 control-label">empName</label>
            <div class="col-sm-10">
                  <p class="form-control-static" id="empName_update_static"></p>
            </div>
          </div>
          <div class="form-group">
            <label class="col-sm-2 control-label">email</label>
            <div class="col-sm-10">
              <input type="text" name="email" class="form-control" id="email_update_input" placeholder="email@atguigu.com">
              <span class="help-block"></span>
            </div>
          </div>
          <div class="form-group">
            <label class="col-sm-2 control-label">gender</label>
            <div class="col-sm-10">
              <label class="radio-inline">
                  <input type="radio" name="gender" id="gender1_update_input" value="M" checked="checked"></label>
                <label class="radio-inline">
                  <input type="radio" name="gender" id="gender2_update_input" value="F"></label>
            </div>
          </div>
          <div class="form-group">
            <label class="col-sm-2 control-label">deptName</label>
            <div class="col-sm-4">
                <!-- 部门提交部门id便可 -->
              <select class="form-control" name="dId">
              </select>
            </div>
          </div>
        </form>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
        <button type="button" class="btn btn-primary" id="emp_update_btn">更新</button>
      </div>
    </div>
  </div>
</div>



<!-- 员工添加的模态框 -->
<div class="modal fade" id="empAddModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">员工添加</h4>
      </div>
      <div class="modal-body">
        <form class="form-horizontal">
          <div class="form-group">
            <label class="col-sm-2 control-label">empName</label>
            <div class="col-sm-10">
              <input type="text" name="empName" class="form-control" id="empName_add_input" placeholder="empName">
              <span class="help-block"></span>
            </div>
          </div>
          <div class="form-group">
            <label class="col-sm-2 control-label">email</label>
            <div class="col-sm-10">
              <input type="text" name="email" class="form-control" id="email_add_input" placeholder="email@atguigu.com">
              <span class="help-block"></span>
            </div>
          </div>
          <div class="form-group">
            <label class="col-sm-2 control-label">gender</label>
            <div class="col-sm-10">
              <label class="radio-inline">
                  <input type="radio" name="gender" id="gender1_add_input" value="M" checked="checked"></label>
                <label class="radio-inline">
                  <input type="radio" name="gender" id="gender2_add_input" value="F"></label>
            </div>
          </div>
          <div class="form-group">
            <label class="col-sm-2 control-label">deptName</label>
            <div class="col-sm-4">
                <!-- 部门提交部门id便可 -->
              <select class="form-control" name="dId">
              </select>
            </div>
          </div>
        </form>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
        <button type="button" class="btn btn-primary" id="emp_save_btn">保存</button>
      </div>
    </div>
  </div>
</div>


    <!-- 搭建显示页面 -->
    <div class="container">
        <!-- 标题 -->
        <div class="row">
            <div class="col-md-12">
                <h1>SSM-CRUD</h1>
            </div>
        </div>
        <!-- 按钮 -->
        <div class="row">
            <div class="col-md-4 col-md-offset-8">
                <button class="btn btn-primary" id="emp_add_modal_btn">新增</button>
                <button class="btn btn-danger" id="emp_delete_all_btn">删除</button>
            </div>
        </div>
        <!-- 显示表格数据 -->
        <div class="row">
            <div class="col-md-12">
                <table class="table table-hover" id="emps_table">
                    <thead>
                        <tr>
                            <th>
                                <input type="checkbox" id="check_all"/>
                            </th>
                            <th>#</th>
                            <th>empName</th>
                            <th>gender</th>
                            <th>email</th>
                            <th>deptName</th>
                            <th>操做</th>
                        </tr>
                    </thead>
                    <tbody>
                    
                    </tbody>
                </table>
            </div>
        </div>

        <!-- 显示分页信息 -->
        <div class="row">
            <!--分页文字信息  -->
            <div class="col-md-6" id="page_info_area"></div>
            <!-- 分页条信息 -->
            <div class="col-md-6" id="page_nav_area">
                
            </div>
        </div>
        
    </div>
    <script type="text/javascript">
    
        var totalRecord,currentPage;
        //一、页面加载完成之后,直接去发送ajax请求,要到分页数据
        $(function(){
            //去首页
            to_page(1);
        });
        
        function to_page(pn){
            $.ajax({
                url:"${APP_PATH}/emps",
                data:"pn="+pn,
                type:"GET",
                success:function(result){
                    //console.log(result);
                    //一、解析并显示员工数据
                    build_emps_table(result);
                    //二、解析并显示分页信息
                    build_page_info(result);
                    //三、解析显示分页条数据
                    build_page_nav(result);
                }
            });
        }
        
        function build_emps_table(result){
            //清空table表格
            $("#emps_table tbody").empty();
            var emps = result.extend.pageInfo.list;
            $.each(emps,function(index,item){
                var checkBoxTd = $("<td><input type='checkbox' class='check_item'/></td>");
                var empIdTd = $("<td></td>").append(item.empId);
                var empNameTd = $("<td></td>").append(item.empName);
                var genderTd = $("<td></td>").append(item.gender=='M'?"男":"女");
                var emailTd = $("<td></td>").append(item.email);
                var deptNameTd = $("<td></td>").append(item.department.deptName);
                /**
                <button class="">
                                    <span class="" aria-hidden="true"></span>
                                    编辑
                                </button>
                */
                var editBtn = $("<button></button>").addClass("btn btn-primary btn-sm edit_btn")
                                .append($("<span></span>").addClass("glyphicon glyphicon-pencil")).append("编辑");
                //为编辑按钮添加一个自定义的属性,来表示当前员工id
                editBtn.attr("edit-id",item.empId);
                var delBtn =  $("<button></button>").addClass("btn btn-danger btn-sm delete_btn")
                                .append($("<span></span>").addClass("glyphicon glyphicon-trash")).append("删除");
                //为删除按钮添加一个自定义的属性来表示当前删除的员工id
                delBtn.attr("del-id",item.empId);
                var btnTd = $("<td></td>").append(editBtn).append(" ").append(delBtn);
                //var delBtn = 
                //append方法执行完成之后仍是返回原来的元素
                $("<tr></tr>").append(checkBoxTd)
                    .append(empIdTd)
                    .append(empNameTd)
                    .append(genderTd)
                    .append(emailTd)
                    .append(deptNameTd)
                    .append(btnTd)
                    .appendTo("#emps_table tbody");
            });
        }
        //解析显示分页信息
        function build_page_info(result){
            $("#page_info_area").empty();
            $("#page_info_area").append("当前"+result.extend.pageInfo.pageNum+"页,总"+
                    result.extend.pageInfo.pages+"页,总"+
                    result.extend.pageInfo.total+"条记录");
            totalRecord = result.extend.pageInfo.total;
            currentPage = result.extend.pageInfo.pageNum;
        }
        //解析显示分页条,点击分页要能去下一页....
        function build_page_nav(result){
            //page_nav_area
            $("#page_nav_area").empty();
            var ul = $("<ul></ul>").addClass("pagination");
            
            //构建元素
            var firstPageLi = $("<li></li>").append($("<a></a>").append("首页").attr("href","#"));
            var prePageLi = $("<li></li>").append($("<a></a>").append("&laquo;"));
            if(result.extend.pageInfo.hasPreviousPage == false){
                firstPageLi.addClass("disabled");
                prePageLi.addClass("disabled");
            }else{
                //为元素添加点击翻页的事件
                firstPageLi.click(function(){
                    to_page(1);
                });
                prePageLi.click(function(){
                    to_page(result.extend.pageInfo.pageNum -1);
                });
            }
            
            
            
            var nextPageLi = $("<li></li>").append($("<a></a>").append("&raquo;"));
            var lastPageLi = $("<li></li>").append($("<a></a>").append("末页").attr("href","#"));
            if(result.extend.pageInfo.hasNextPage == false){
                nextPageLi.addClass("disabled");
                lastPageLi.addClass("disabled");
            }else{
                nextPageLi.click(function(){
                    to_page(result.extend.pageInfo.pageNum +1);
                });
                lastPageLi.click(function(){
                    to_page(result.extend.pageInfo.pages);
                });
            }
            
            
            
            //添加首页和前一页 的提示
            ul.append(firstPageLi).append(prePageLi);
            //1,2,3遍历给ul中添加页码提示
            $.each(result.extend.pageInfo.navigatepageNums,function(index,item){
                
                var numLi = $("<li></li>").append($("<a></a>").append(item));
                if(result.extend.pageInfo.pageNum == item){
                    numLi.addClass("active");
                }
                numLi.click(function(){
                    to_page(item);
                });
                ul.append(numLi);
            });
            //添加下一页和末页 的提示
            ul.append(nextPageLi).append(lastPageLi);
            
            //把ul加入到nav
            var navEle = $("<nav></nav>").append(ul);
            navEle.appendTo("#page_nav_area");
        }
        
        //清空表单样式及内容
        function reset_form(ele){
            $(ele)[0].reset();
            //清空表单样式
            $(ele).find("*").removeClass("has-error has-success");
            $(ele).find(".help-block").text("");
        }
        
        //点击新增按钮弹出模态框。
        $("#emp_add_modal_btn").click(function(){
            //清除表单数据(表单完整重置(表单的数据,表单的样式))
            reset_form("#empAddModal form");
            //s$("")[0].reset();
            //发送ajax请求,查出部门信息,显示在下拉列表中
            getDepts("#empAddModal select");
            //弹出模态框
            $("#empAddModal").modal({
                backdrop:"static"
            });
        });
        
        //查出全部的部门信息并显示在下拉列表中
        function getDepts(ele){
            //清空以前下拉列表的值
            $(ele).empty();
            $.ajax({
                url:"${APP_PATH}/depts",
                type:"GET",
                success:function(result){
                    //{"code":100,"msg":"处理成功!",
                        //"extend":{"depts":[{"deptId":1,"deptName":"开发部"},{"deptId":2,"deptName":"测试部"}]}}
                    //console.log(result);
                    //显示部门信息在下拉列表中
                    //$("#empAddModal select").append("")
                    $.each(result.extend.depts,function(){
                        var optionEle = $("<option></option>").append(this.deptName).attr("value",this.deptId);
                        optionEle.appendTo(ele);
                    });
                }
            });
            
        }
        
        //校验表单数据
        function validate_add_form(){
            //一、拿到要校验的数据,使用正则表达式
            var empName = $("#empName_add_input").val();
            var regName = /(^[a-zA-Z0-9_-]{6,16}$)|(^[\u2E80-\u9FFF]{2,5})/;
            if(!regName.test(empName)){
                //alert("用户名能够是2-5位中文或者6-16位英文和数字的组合");
                show_validate_msg("#empName_add_input", "error", "用户名能够是2-5位中文或者6-16位英文和数字的组合");
                return false;
            }else{
                show_validate_msg("#empName_add_input", "success", "");
            };
            
            //二、校验邮箱信息
            var email = $("#email_add_input").val();
            var regEmail = /^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/;
            if(!regEmail.test(email)){
                //alert("邮箱格式不正确");
                //应该清空这个元素以前的样式
                show_validate_msg("#email_add_input", "error", "邮箱格式不正确");
                /* $("#email_add_input").parent().addClass("has-error");
                $("#email_add_input").next("span").text("邮箱格式不正确"); */
                return false;
            }else{
                show_validate_msg("#email_add_input", "success", "");
            }
            return true;
        }
        
        //显示校验结果的提示信息
        function show_validate_msg(ele,status,msg){
            //清除当前元素的校验状态
            $(ele).parent().removeClass("has-success has-error");
            $(ele).next("span").text("");
            if("success"==status){
                $(ele).parent().addClass("has-success");
                $(ele).next("span").text(msg);
            }else if("error" == status){
                $(ele).parent().addClass("has-error");
                $(ele).next("span").text(msg);
            }
        }
        
        //校验用户名是否可用
        $("#empName_add_input").change(function(){
            //发送ajax请求校验用户名是否可用
            var empName = this.value;
            $.ajax({
                url:"${APP_PATH}/checkuser",
                data:"empName="+empName,
                type:"POST",
                success:function(result){
                    if(result.code==100){
                        show_validate_msg("#empName_add_input","success","用户名可用");
                        $("#emp_save_btn").attr("ajax-va","success");
                    }else{
                        show_validate_msg("#empName_add_input","error",result.extend.va_msg);
                        $("#emp_save_btn").attr("ajax-va","error");
                    }
                }
            });
        });
        
        //点击保存,保存员工。
        $("#emp_save_btn").click(function(){
            //一、模态框中填写的表单数据提交给服务器进行保存
            //一、先对要提交给服务器的数据进行校验
            if(!validate_add_form()){
                return false;
            };
            //一、判断以前的ajax用户名校验是否成功。若是成功。
            if($(this).attr("ajax-va")=="error"){
                return false;
            }
            
            //二、发送ajax请求保存员工
            $.ajax({
                url:"${APP_PATH}/emp",
                type:"POST",
                data:$("#empAddModal form").serialize(),
                success:function(result){
                    //alert(result.msg);
                    if(result.code == 100){
                        //员工保存成功;
                        //一、关闭模态框
                        $("#empAddModal").modal('hide');
                        
                        //二、来到最后一页,显示刚才保存的数据
                        //发送ajax请求显示最后一页数据便可
                        to_page(totalRecord);
                    }else{
                        //显示失败信息
                        //console.log(result);
                        //有哪一个字段的错误信息就显示哪一个字段的;
                        if(undefined != result.extend.errorFields.email){
                            //显示邮箱错误信息
                            show_validate_msg("#email_add_input", "error", result.extend.errorFields.email);
                        }
                        if(undefined != result.extend.errorFields.empName){
                            //显示员工名字的错误信息
                            show_validate_msg("#empName_add_input", "error", result.extend.errorFields.empName);
                        }
                    }
                }
            });
        });
        
        //一、咱们是按钮建立以前就绑定了click,因此绑定不上。
        //1)、能够在建立按钮的时候绑定。    2)、绑定点击.live()
        //jquery新版没有live,使用on进行替代
        $(document).on("click",".edit_btn",function(){
            //alert("edit");
            
            
            //一、查出部门信息,并显示部门列表
            getDepts("#empUpdateModal select");
            //二、查出员工信息,显示员工信息
            getEmp($(this).attr("edit-id"));
            
            //三、把员工的id传递给模态框的更新按钮
            $("#emp_update_btn").attr("edit-id",$(this).attr("edit-id"));
            $("#empUpdateModal").modal({
                backdrop:"static"
            });
        });
        
        function getEmp(id){
            $.ajax({
                url:"${APP_PATH}/emp/"+id,
                type:"GET",
                success:function(result){
                    //console.log(result);
                    var empData = result.extend.emp;
                    $("#empName_update_static").text(empData.empName);
                    $("#email_update_input").val(empData.email);
                    $("#empUpdateModal input[name=gender]").val([empData.gender]);
                    $("#empUpdateModal select").val([empData.dId]);
                }
            });
        }
        
        //点击更新,更新员工信息
        $("#emp_update_btn").click(function(){
            //验证邮箱是否合法
            //一、校验邮箱信息
            var email = $("#email_update_input").val();
            var regEmail = /^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/;
            if(!regEmail.test(email)){
                show_validate_msg("#email_update_input", "error", "邮箱格式不正确");
                return false;
            }else{
                show_validate_msg("#email_update_input", "success", "");
            }
            
            //二、发送ajax请求保存更新的员工数据
            $.ajax({
                url:"${APP_PATH}/emp/"+$(this).attr("edit-id"),
                type:"PUT",
                data:$("#empUpdateModal form").serialize(),
                success:function(result){
                    //alert(result.msg);
                    //一、关闭对话框
                    $("#empUpdateModal").modal("hide");
                    //二、回到本页面
                    to_page(currentPage);
                }
            });
        });
        
        //单个删除
        $(document).on("click",".delete_btn",function(){
            //一、弹出是否确认删除对话框
            var empName = $(this).parents("tr").find("td:eq(2)").text();
            var empId = $(this).attr("del-id");
            //alert($(this).parents("tr").find("td:eq(1)").text());
            if(confirm("确认删除【"+empName+"】吗?")){
                //确认,发送ajax请求删除便可
                $.ajax({
                    url:"${APP_PATH}/emp/"+empId,
                    type:"DELETE",
                    success:function(result){
                        alert(result.msg);
                        //回到本页
                        to_page(currentPage);
                    }
                });
            }
        });
        
        //完成全选/全不选功能
        $("#check_all").click(function(){
            //attr获取checked是undefined;
            //咱们这些dom原生的属性;attr获取自定义属性的值;
            //prop修改和读取dom原生属性的值
            $(".check_item").prop("checked",$(this).prop("checked"));
        });
        
        //check_item
        $(document).on("click",".check_item",function(){
            //判断当前选择中的元素是否5个
            var flag = $(".check_item:checked").length==$(".check_item").length;
            $("#check_all").prop("checked",flag);
        });
        
        //点击所有删除,就批量删除
        $("#emp_delete_all_btn").click(function(){
            //
            var empNames = "";
            var del_idstr = "";
            $.each($(".check_item:checked"),function(){
                //this
                empNames += $(this).parents("tr").find("td:eq(2)").text()+",";
                //组装员工id字符串
                del_idstr += $(this).parents("tr").find("td:eq(1)").text()+"-";
            });
            //去除empNames多余的,
            empNames = empNames.substring(0, empNames.length-1);
            //去除删除的id多余的-
            del_idstr = del_idstr.substring(0, del_idstr.length-1);
            if(confirm("确认删除【"+empNames+"】吗?")){
                //发送ajax请求删除
                $.ajax({
                    url:"${APP_PATH}/emp/"+del_idstr,
                    type:"DELETE",
                    success:function(result){
                        alert(result.msg);
                        //回到当前页面
                        to_page(currentPage);
                    }
                });
            }
        });
    </script>
</body>
</html>
index.jsp

 

 

平常报错:

 1.java.lang.NoClassDefFoundError: javax/el/ELManager:

报错缘由:原jdk和Tomcat的el-api架包没有ElManage

解决方法:下载el-api3.0放到Tomcat的lib目录下或者jdk目录下(别放在jdk下,跑springboot会出问题)

 2.ajax发送PUT请求封装数据不成功:

失败缘由:Tomcat只是封装Post请求的参数

解决方法:在web,xml文件中添加过滤器

 

总结: