java学习笔记，13 —— google GSON 实现json转化方法
1、配置struts.xml
<action name="getGsonAction" class="com.test.action.json.GetGsonAction">
</action>2、添加js方法
getJson = function(){
$.post("getGsonAction.action",{name:$('#name').val()},function(ret,status){
if("success" == status){
}
});
}3、添加jsp页面
<html>
<head>
<script type="text/javascript" src="js/jquery-1.8.2.js"></script>
<script type="text/javascript" src="scripts/common.js"></script>
</head>
<body >
<select >
<option value="james" selected="selected">james</option>
<option value="currey">currey</option>
</select>
<input type="button" value="getInfo" onclick="getJson();"/>
</body>
</html>4、bean文件
public class Address
{
private String homeAddress;
private String companyAddress;
public String getHomeAddress() {
return homeAddress;
}
public void setHomeAddress(String homeAddress) {
this.homeAddress = homeAddress;
}
public String getCompanyAddress() {
return companyAddress;
}
public void setCompanyAddress(String companyAddress) {
this.companyAddress = companyAddress;
}
}
package com.test.action.json;
import java.util.List;
//9分钟
public class People
{
private int id;
private String name;
private Address address;
private List<People> friends;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
public List<People> getFriends() {
return friends;
}
public void setFriends(List<People> friends) {
this.friends = friends;
}
}5、添加action类
public class GetGsonAction extends ActionSupport {
private static final long serialVersionUID = 5409431608941107203L;
public String execute() throws Exception {
List<People> list = new ArrayList<People>();
//第一个人的信息
Address address1 = new Address();
address1.setCompanyAddress("shanghai");
address1.setHomeAddress("beijing");
People people1 = new People();
people1.setId(1);
people1.setName("james");
people1.setAddress(address1);
People friend1 = new People();
people1.setId(4);
people1.setName("smith");
People friend2 = new People();
friend2.setId(5);
friend2.setName("owen");
List<People> list1 = new ArrayList<People>();
list1.add(friend1);
list1.add(friend2);
people1.setFriends(list1);
//第二个人的信息
People people2 = new People();
Address address2 = new Address();
address2.setCompanyAddress("tianjin");
address2.setHomeAddress("tanggu");
people2.setId(2);
people2.setName("currey");
people2.setAddress(address2);
List<People> list2 = new ArrayList<People>();
People friend3 = new People();
friend3.setId(7);
friend3.setName("igdala");
list2.add(friend3);
People friend4 = new People();
friend4.setId(8);
friend4.setName("toms");
list2.add(friend4);
people2.setFriends(list2);
list.add(people1);
list.add(people2);
Gson gson = new Gson();
String result = gson.toJson(list);
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("text/json; charset=utf-8");
response.setHeader("Cache-Control", "no-cache");//取消浏览器缓存
PrintWriter writer = response.getWriter();
writer.write(result);
writer.flush();
writer.close();
System.out.println(result);
return null;
}
}