在本篇博客之前，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：
1、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。
2、微信开发之通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。
3、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。
对于初学者，可能还不知道订阅号、服务号、和企业号的区别，博主之前也是一直没有弄清楚，因此查阅资料整理了一篇博客供大家阅读：微信服务号、订阅号和企业号的区别（运营和开发两个角度）。建议有时间得猿友还是阅读一下为好。
上面的文章内容虽然有点多而且繁琐，看完之后不敢说已经入门，但是初步了解，自己写实例是没有问题的。不积跬步无以至千里，希望猿友们耐心继续下去！！！！！！
上面的文章内容虽然有点多而且繁琐，看完之后不敢说已经入门，但是初步了解，自己写实例是没有问题的。不积跬步无以至千里，希望猿友们耐心继续下去！！！！！！
上面的文章内容虽然有点多而且繁琐，看完之后不敢说已经入门，但是初步了解，自己写实例是没有问题的。不积跬步无以至千里，希望猿友们耐心继续下去！！！！！！
期间可能会遇到一些坑，欢迎与博主评论交流
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。
一、结果演示
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，最后会附上工程供大家下载。
2.1、获取签名工具类（httpclient和sha1加密）
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 + "×tamp=" + 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); //最终获得调用微信js接口验证需要的三个参数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"); //如果是SHA加密只需要将"SHA-1"改成"SHA"即可 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 & 0xFF); if (shaHex.length() < 2) { hexStr.append(0); } hexStr.append(shaHex); } return hexStr.toString(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } return null; }}2.2、controller代码（尽可能仔细阅读下面的每一行代码，特别是url部分）
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(); //以为我配置的菜单是http://yo.bbdfun.com/first_maven_project/，最后是有"/"的，所以url也加上了"/" String url = request.getScheme() + "://" + request.getServerName() + path + "/"; String str = "jsapi_ticket=" + jsapi_ticket + "&noncestr=" + noncestr + "×tamp=" + 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; } }2.3、前端js代码（尽可能仔细阅读下面的每一行代码）
<%@ 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,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。 appId: '${appId}', // 必填，企业号的唯一标识，此处填写企业号corpid timestamp: parseInt("${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 jsApiList: ['getLocation'] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2 }); wx.ready(function(){ }); wx.error(function(res){ });</script></head><body><button id="getBBS" style="width:1000px;height:600px;font-size:150px;" onclick="submitOrderInfoClick();">获取地理位置</button></body><script type="text/javascript">function submitOrderInfoClick(){ wx.getLocation({ success: function (res) { alert("小宝鸽获取地理位置成功，经纬度为：（" + res.latitude + "，" + res.longitude + "）" ); }, fail: function(error) { AlertUtil.error("获取地理位置失败，请确保开启GPS且允许微信获取您的地理位置！"); } });}</script></html>
[/url]http://download.csdn.net/detail/u013142781/9400470
加上这篇文章，博主微信相关文章就有5篇，将会点亮博主微信开发博客专栏（左侧可看到），欢迎订阅。
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