转:微信开发获取地理位置实例(java,很是详细,附工程源码)

2019年11月12日 阅读数:82
这篇文章主要向大家介绍转:微信开发获取地理位置实例(java,很是详细,附工程源码),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。

微信开发获取地理位置实例(java,很是详细,附工程源码)

在本篇博客以前,博主已经写了4篇关于微信相关文章,其中三篇是本文基础:javascript

一、微信开发之入门教程,该文章详细讲解了企业号体验号免费申请与一些必要的配置,以及如何调用微信接口。html

二、微信开发之经过代理调试本地项目,该文章详细讲解了如何调试本地项目,使用工具的详细安装与配置。前端

三、微信开发之使用java获取签名signature(贴源码,附工程),该文详细讲些了如何获取签名,代码十分详细。java

对于初学者,可能还不知道订阅号、服务号、和企业号的区别,博主以前也是一直没有弄清楚,所以查阅资料整理了一篇博客供你们阅读:微信服务号、订阅号和企业号的区别(运营和开发两个角度)。建议有时间得猿友仍是阅读一下为好。git

上面的文章内容虽然有点多并且繁琐,看完以后不敢说已经入门,可是初步了解,本身写实例是没有问题的。不积跬步无以致千里,但愿猿友们耐心继续下去!!!!!!web

上面的文章内容虽然有点多并且繁琐,看完以后不敢说已经入门,可是初步了解,本身写实例是没有问题的。不积跬步无以致千里,但愿猿友们耐心继续下去!!!!!!spring

 上面的文章内容虽然有点多并且繁琐,看完以后不敢说已经入门,可是初步了解,本身写实例是没有问题的。不积跬步无以致千里,但愿猿友们耐心继续下去!!!!!!apache

期间可能会遇到一些坑,欢迎与博主评论交流json

有了上面的基础,接下来博主将分享一个具体的微信开发实例,获取用户当前的地理位置。api

1、结果演示

这里写图片描述 这里写图片描述 这里写图片描述 这里写图片描述

2、代码及代码讲解

本工程使用的环境是Eclipse + maven + springmvc,下面附上关键代码,springmvc和web.xml相关配置和maven相关依赖就不一一列举,最后会附上工程供你们下载。

2.一、获取签名工具类(httpclient和sha1加密)

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package com.luo.util;
 
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import net.sf.json.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
 
public class HttpXmlClient {
 
     public static String post(String url, Map<String, String> params) {
         DefaultHttpClient httpclient = new DefaultHttpClient();
         String body = null ;
         HttpPost post = postForm(url, params);
         body = invoke(httpclient, post);
         httpclient.getConnectionManager().shutdown();
         return body;
     }
 
     public static String get(String url) {
         DefaultHttpClient httpclient = new DefaultHttpClient();
         String body = null ;
         HttpGet get = new HttpGet(url);
         body = invoke(httpclient, get);
         httpclient.getConnectionManager().shutdown();
         return body;
     }
 
     private static String invoke(DefaultHttpClient httpclient,
             HttpUriRequest httpost) {
         HttpResponse response = sendRequest(httpclient, httpost);
         String body = paseResponse(response);
         return body;
     }
 
     private static String paseResponse(HttpResponse response) {
         HttpEntity entity = response.getEntity();
         String charset = EntityUtils.getContentCharSet(entity);
         String body = null ;
         try {
             body = EntityUtils.toString(entity);
         } catch (ParseException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         return body;
     }
 
     private static HttpResponse sendRequest(DefaultHttpClient httpclient,
             HttpUriRequest httpost) {
         HttpResponse response = null ;
         try {
             response = httpclient.execute(httpost);
         } catch (ClientProtocolException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         return response;
     }
 
     private static HttpPost postForm(String url, Map<String, String> params) {
 
         HttpPost httpost = new HttpPost(url);
         List<NameValuePair> nvps = new ArrayList<NameValuePair>();
 
         Set<String> keySet = params.keySet();
         for (String key : keySet) {
             nvps.add( new BasicNameValuePair(key, params.get(key)));
         }
 
         try {
             httpost.setEntity( new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
         } catch (UnsupportedEncodingException e) {
             e.printStackTrace();
         }
 
         return httpost;
     }
 
     public static void main(String[] args) {
 
         //获取access_token
         Map<String, String> params = new HashMap<String, String>();
         params.put( "corpid" , "wx5f24fa0db1819ea2" );
         params.put( "corpsecret" , "uQtWzF0bQtl2KRHX0amekjpq8L0aO96LSpSNfctOBLRbuYPO4DUBhMn0_v2jHS-9" );
         String xml = HttpXmlClient.post( "https://qyapi.weixin.qq.com/cgi-bin/gettoken" ,params);
         JSONObject jsonMap  = JSONObject.fromObject(xml);
         Map<String, String> map = new HashMap<String, String>();
         Iterator<String> it = jsonMap.keys(); 
         while (it.hasNext()) { 
             String key = (String) it.next(); 
             String u = jsonMap.get(key).toString();
             map.put(key, u); 
         }
         String access_token = map.get( "access_token" );
         System.out.println( "access_token=" + access_token);
 
         //获取ticket
         params.put( "access_token" ,access_token);
         xml = HttpXmlClient.post( "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket" ,params);
         jsonMap  = JSONObject.fromObject(xml);
         map = new HashMap<String, String>();
         it = jsonMap.keys(); 
         while (it.hasNext()) { 
             String key = (String) it.next(); 
             String u = jsonMap.get(key).toString();
             map.put(key, u); 
         }
         String jsapi_ticket = map.get( "ticket" );
         System.out.println( "jsapi_ticket=" + jsapi_ticket);
 
         //获取签名signature
         String noncestr = UUID.randomUUID().toString();
         String timestamp = Long.toString(System.currentTimeMillis() / 1000 );
         String url= "http://mp.weixin.qq.com" ;
         String str = "jsapi_ticket=" + jsapi_ticket +
                 "&noncestr=" + noncestr +
                 "&timestamp=" + timestamp +
                 "&url=" + url;
         //sha1加密
         String signature = SHA1(str);
         System.out.println( "noncestr=" + noncestr);
         System.out.println( "timestamp=" + timestamp);
         System.out.println( "signature=" + signature);
         //最终得到调用微信js接口验证须要的三个参数noncestr、timestamp、signature
     }
 
        /**
      * @author:罗国辉
      * @date: 2015年12月17日 上午9:24:43
      * @description: SHA、SHA1加密
      * @parameter:   str:待加密字符串
      * @return:  加密串
     **/
     public static String SHA1(String str) {
         try {
             MessageDigest digest = java.security.MessageDigest
                     .getInstance( "SHA-1" ); //若是是SHA加密只须要将"SHA-1"改为"SHA"便可
             digest.update(str.getBytes());
             byte messageDigest[] = digest.digest();
             // Create Hex String
             StringBuffer hexStr = new StringBuffer();
             // 字节数组转换为 十六进制 数
             for ( int i = 0 ; i < messageDigest.length; i++) {
                 String shaHex = Integer.toHexString(messageDigest[i] & 0xFF );
                 if (shaHex.length() < 2 ) {
                     hexStr.append( 0 );
                 }
                 hexStr.append(shaHex);
             }
             return hexStr.toString();
 
         } catch (NoSuchAlgorithmException e) {
             e.printStackTrace();
         }
         return null ;
     }
}

2.二、controller代码(尽量仔细阅读下面的每一行代码,特别是url部分)

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package com.luo.controller;
 
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.UUID;
import javax.servlet.http.HttpServletRequest;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
 
import com.luo.util.HttpXmlClient;
 
@Controller 
public class UserController { 
 
     @RequestMapping ( "/" )   
     public ModelAndView getIndex(HttpServletRequest request){ 
 
         ModelAndView mav = new ModelAndView( "index" ); 
         //获取access_token
         Map<String, String> params = new HashMap<String, String>();
         params.put( "corpid" , "wx7099477f2de8aded" );
         params.put( "corpsecret" , "4clWzENvHVmpcyuA4toys0URkfYanIqWtxZ5plbisn6Cd5AVTF0thpaK6UAhjIvN" );
         String xml = HttpXmlClient.post( "https://qyapi.weixin.qq.com/cgi-bin/gettoken" ,params);
         JSONObject jsonMap  = JSONObject.fromObject(xml);
         Map<String, String> map = new HashMap<String, String>();
         Iterator<String> it = jsonMap.keys(); 
         while (it.hasNext()) { 
             String key = (String) it.next(); 
             String u = jsonMap.get(key).toString();
             map.put(key, u); 
         }
         String access_token = map.get( "access_token" );
 
         //获取ticket
         params.put( "access_token" ,access_token);
         xml = HttpXmlClient.post( "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket" ,params);
         jsonMap  = JSONObject.fromObject(xml);
         map = new HashMap<String, String>();
         it = jsonMap.keys(); 
         while (it.hasNext()) { 
             String key = (String) it.next(); 
             String u = jsonMap.get(key).toString();
             map.put(key, u); 
         }
         String jsapi_ticket = map.get( "ticket" );
 
         //获取签名signature
         String noncestr = UUID.randomUUID().toString();
         String timestamp = Long.toString(System.currentTimeMillis() / 1000 );
         //获取请求url
         String path = request.getContextPath();
         //觉得我配置的菜单是http://yo.bbdfun.com/first_maven_project/,最后是有"/"的,因此url也加上了"/"
         String url = request.getScheme() + "://" + request.getServerName() +  path + "/"
         String str = "jsapi_ticket=" + jsapi_ticket +
                 "&noncestr=" + noncestr +
                 "&timestamp=" + timestamp +
                 "&url=" + url;
         //sha1加密
         String signature = HttpXmlClient.SHA1(str);
         mav.addObject( "signature" , signature);  
         mav.addObject( "timestamp" , timestamp);  
         mav.addObject( "noncestr" , noncestr);  
         mav.addObject( "appId" , "wx7099477f2de8aded" );
         System.out.println( "jsapi_ticket=" + jsapi_ticket);
         System.out.println( "noncestr=" + noncestr);
         System.out.println( "timestamp=" + timestamp);
         System.out.println( "url=" + url);
         System.out.println( "str=" + str);
         System.out.println( "signature=" + signature);
         return mav;   
 
     }   
}

2.三、前端js代码(尽量仔细阅读下面的每一行代码)

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<%@ page language= "java" contentType= "text/html; charset=UTF-8" pageEncoding= "UTF-8" %>
<html>
<head>
<script src= "http://res.wx.qq.com/open/js/jweixin-1.0.0.js" ></script>
<script>
     wx.config({
         debug: true , // 开启调试模式,调用的全部api的返回值会在客户端alert出来,若要查看传入的参数,能够在pc端打开,参数信息会经过log打出,仅在pc端时才会打印。
         appId: '${appId}' , // 必填,企业号的惟一标识,此处填写企业号corpid
         timestamp: parseInt( "${timestamp}" , 10 ), // 必填,生成签名的时间戳
         nonceStr: '${noncestr}' , // 必填,生成签名的随机串
         signature: '${signature}' , // 必填,签名,见附录1