微信开发获取地理位置实例（java，非常详细，附工程源码）
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
二、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，最后会附上工程供大家下载。
2.1、获取签名工具类（httpclient和sha1加密）
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
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[i] & 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）
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
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）
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
<%@ 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="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> |