WeChat JS-SDK customizes WeChat sharing function

This article introduces the custom WeChat sharing function of WeChat JS-SDK, which has certain reference value. Now I share it with everyone. Friends in need can refer to it

1 Preparation

appId public account id, apply for sharing interface, ip whitelist setting, JS interface security domain name setting (must be registered)

2. Introduce js

<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>

3. Inject permission verification configuration through the config interface

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: '', // 必填，公众号的唯一标识    
    timestamp: , // 必填，生成签名的时间戳    
    nonceStr: '', // 必填，生成签名的随机串    
    signature: '',// 必填，签名，见附录1    
    jsApiList: [   'onMenuShareTimeline',    
                 'onMenuShareAppMessage' ,
                 'onMenuShareQQ'  ] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2    
});

4. Process through the ready interface Successful verification

wx.ready(function(){    
// config信息验证后会执行ready方法，所有接口调用都必须在config接口获得结果之后，config是一个客户端的异步操作，所以如果需要在页面加载时就调用相关接口，
则须把相关接口放在ready函数中调用来确保正确执行。对于用户触发时才调用的接口，则可以直接调用，不需要放在ready函数中。    
});

5. Handle failed verification through the error interface

wx.error(function(res){    
// config信息验证失败会执行error函数，如签名过期导致验证失败，具体错误信息可以打开config的debug模式查看，也可以在返回的res参数中查看，对于SPA可以在这里更新签名。    
});

Page source code:

wx.config({         
        debug: false,                 
        appId: 'xxxxxxxxxxxxxx',                 
        timestamp: timestamp,                 
        nonceStr: nonceStr,                 
        signature: signature,                 
        jsApiList: [           
                  'onMenuShareTimeline',                     
                  'onMenuShareAppMessage' ,                 
                  'onMenuShareQQ'             
         ]             
});              

wx.ready(function(){       
      // wx.hideOptionMenu();             
      wx.onMenuShareTimeline({         
              title: '',                 
              link: '',                 
              imgUrl: '',                 
              success: function () {           
                         // 用户确认分享后执行的回调函数                      
                         //alert('分享到朋友圈成功');                 
               },                 
               cancel: function () {          
                           // 用户取消分享后执行的回调函数                      
                           //alert('你没有分享到朋友圈');                 
                }             
      });             
      wx.onMenuShareAppMessage({          
               title: '',                   
               desc: '',                   
               link: '',                   
               imgUrl: '',                   
               trigger: function (res) {           
                         // 不要尝试在trigger中使用ajax异步请求修改本次分享的内容，因为客户端分享操作是一个同步操作，这时候使用ajax的回包会还没有返回                   
                         },                   
                         success: function (res) {           
                                     //alert('分享给朋友成功');                   
                         },                   
                         cancel: function (res) {            
                                    //alert('你没有分享给朋友');                   
                         },                   
                         fail: function (res) {            
                                   alert(JSON.stringify(res));                   
                         }               
               });             
               wx.onMenuShareQQ({       
                      title: '',                  
                      desc: '',                  
                      link: '',                  
                      imgUrl: '',             
                      success: function () {      
                             // 用户确认分享后执行的回调函数             
                             },             
                             cancel: function () {       
                             // 用户取消分享后执行的回调函数             
                             }             
                      });         
            });

java code obtains WeChat’s signature, timestamp, and signature random string

url is your current address, WeChat generates token

@RequestMapping("/doGetWxToken")
      public RespBean<Map<String,Object>> doEditAccractMemberStatus(String url) throws Except
ion{
     RespBean<Map<String,Object>>  resp = new RespBean<Map<String,Object>> ();
     Map<String,Object> map  = new HashMap<String,Object>();
     String str = SendGET("https://api.weixin.qq.com/cgi-bin/token", "grant_type=client_
credential&appid=XX&secret=XXXX");
     String a = str.substring(str.indexOf("{"), str.indexOf("}")+1);
     JSONObject jo = JSON.parseObject(a);
     String token = jo.getString("access_token");//获取token
     String info = SendGET("https://api.weixin.qq.com/cgi-bin/ticket/getticket", "access
_token="+token+"&type=jsapi");
     JSONObject ticketO = JSON.parseObject(info);
     String ticket = ticketO.getString("ticket");//获取ticket 
     Map<String, String> ret = WxSign.sign(ticket, url);         
     for (Map.Entry entry : ret.entrySet()) {         
            System.out.println(entry.getKey() + "=" + entry.getValue());                
            map.put(entry.getKey().toString(), entry.getValue());            
     }
     resp.setBody(map);
     return resp;
     }
     //直接java访问拿对应的数据
     public static String SendGET(String url,String param){
        String result="";//访问返回结果   
        BufferedReader read=null;//读取访问结果       
        
        try {    
        //创建url    
        URL realurl=new URL(url+"?"+param);    
        //打开连接    URLConnection connection=realurl.openConnection();     
        // 设置通用的请求属性       
              connection.setRequestProperty("accept", "*/*");             
              connection.setRequestProperty("connection", "Keep-Alive");             
              connection.setRequestProperty("user-agent",           
                        "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");             
              //建立连接             
              connection.connect();          
       // 获取所有响应头字段        
              Map<String, List<String>> map = connection.getHeaderFields();             
              // 遍历所有的响应头字段，获取到cookies等             
              for (String key : map.keySet()) {         
                      System.out.println(key + "--->" + map.get(key));             
              }             
              // 定义 BufferedReader输入流来读取URL的响应             
              read = new BufferedReader(new InputStreamReader(           
                      connection.getInputStream(),"UTF-8"));             
              String line;//循环读取             
              while ((line = read.readLine()) != null) {         
                      result += line;             
              }   
      } catch (IOException e) {  
        e.printStackTrace();   
      }finally{   
        if(read!=null){//关闭流     
        try {    
          read.close();     
      } catch (IOException e) {    
        e.printStackTrace();     
      }   
    }  
 }        
  return result;  
}

through the current address

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