微信开发获取地理位置实例

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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 +
                "&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;
    }
}

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 +
                "&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;    
 
    }    
}

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({
　　　　 beta: true,// 必须这么写，否则在微信插件有些jsapi会有问题
        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','openLocation'] // 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(){
         var isCheck=false;
         wx.checkJsApi({
           jsApiList: [
             'getLocation'
           ],
         })
    });
 
    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("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>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server"><title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no;" /> 
<script type="text/javascript" src="../../js/jquery.1.11.1.min.js"></script>
<script type="text/javascript" src="../../js/jweixin-1.0.0.js"></script>
<script type="text/javascript">   
    $(function () {
        wx.config({
            debug: false,
            appId: '<%=app_Id%>',
            timestamp: <%=timestamp%>,
            nonceStr: '<%=nonceStr%>',
            signature: '<%=signature%>',
            jsApiList: [
              'checkJsApi',             
              'getLocation'
            ]
        });
        wx.ready(function () {
            var isCheck=false;
            wx.checkJsApi({
                jsApiList: [
                  'checkJsApi',  
                  'getLocation'
                ],
                success: function (res) {
                    //alert(JSON.stringify(res));
                    isCheck=res.checkResult.getLocation;
                }
            });
            document.querySelector('#btnLocation').onclick = function () {
                if(!isCheck){
                    msgtip("您的微信版本不支持获取位置！");
                    return;
                }
                wx.getLocation({
                    success: function (res) {
                        alert(JSON.stringify(res));
                    },
                    cancel: function (res) {
                        alert('发生错误');
                    }
                });
            };
        });
        wx.error(function (res) {
            alert(res.errMsg);
        });

    });
   
</script>
</head>
<body>
    <form id="form1" runat="server">
        <header class="ui-header ui-header-positive ui-border-b">
            <i class="ui-icon-return" onclick="history.back()"></i><h1>获取地址位置</h1><a href="Default.aspx?open_id=" class="sp-back sp-home"></a> 
        </header>
        <div class="panel-body" style="margin-top:45px;">
             <input type="button" id="btnLocation" value="取得位置" />
            <asp:Literal ID="lblInfo" runat="server"></asp:Literal>
           </div>
        <div class="ui-poptips ui-poptips-warn" id="divInfo" style="display:none;">
            <div class="ui-poptips-cnt"><i></i><span id="spntool"></span></div><input type="hidden" id="hideCard_no" />
        </div><div id="datePlugin"></div><asp:HiddenField ID="hideOpen_id" runat="server" />            
    </form>
</body>
</html>
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