微信js-sdk+JAVA实现“分享到朋友圈”和“发送给朋友”功能详解

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: [] // 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(){

   //详细代码

});

wx.error(function(res){});

<script> 
//微信分享朋友圈 
$(function(){ 
 /***用户点击分享到微信圈后加载接口接口*******/ 
  var url=window.location.href.split('#')[0]; 
   url = url.replace(/&/g,'%26'); 
  console.log("url:"+url); 
  $.ajax({ 
    url: "<%=basePath%>/lottery/shareToFriend.action?url="+url,type: "POST",async:true,cache: false,dataType: "json",success: function(data){ 
      wx.config({ 
       debug: false,appId: 'wx2948dfef9ef421ee',timestamp:data.timeStamp,nonceStr:data.nonceStr,signature:data.signature,jsApiList: [ 
         'checkJsApi','onMenuShareTimeline','hideOptionMenu','onMenuShareAppMessage' 
       ] 
     }); 
       
     wx.ready(function(){ 
       //wx.hideOptionMenu();/***隐藏分享菜单****/  
       wx.checkJsApi({ 
       jsApiList: [ 
        'getLocation','onMenuShareAppMessage' 
       ],success: function (res) { 
        //alert(res.errMsg); 
       } 
      }); 
        
      wx.onMenuShareAppMessage({ 
         title: '刮刮乐',desc: '刮刮乐开始啦',link: '<%=basePath%>/lottery/lottery.action?lottery.id=${lottery.id}',imgUrl: '<%=basePath%>/resources/qjc/img/start.png',trigger: function (res) { 
          //alert('用户点击发送给朋友'); 
         },success: function (res) { 
          alert('您已获得抽奖机会，赶紧去赢大奖吧～～'); 
          //分享之后增加游戏次数 
          $.ajax({ 
            url: "<%=basePath%>/lottery/rewardPlayCount.action?openId=${openId}&lotteryId=${lottery.id}&shareType=friend",success: function(data){ 
               
            } 
           }); 
         },cancel: function (res) { 
          //alert('已取消'); 
         },fail: function (res) { 
          alert(res.errMsg); 
         } 
        }); 
       
       // 2.2 监听“分享到朋友圈”按钮点击、自定义分享内容及分享结果接口 
       wx.onMenuShareTimeline({ 
         title: '刮刮乐',trigger: function (res) { 
          //alert('用户点击分享到朋友圈'); 
         },success: function (res) { 
          alert('您已获得抽奖机会，赶紧去赢大奖吧～～'); 
          //分享之后增加游戏次数 
          $.ajax({ 
            url: "<%=basePath%>/lottery/rewardPlayCount.action?openId=${openId}&lotteryId=${lottery.id}&shareType=friendCircle",fail: function (res) { 
          alert(res.errMsg); 
         } 
      }); 
        
      wx.error(function (res) { 
          alert(res.errMsg); 
        }); 
      });  
    },error: function() { 
      alert('ajax request failed!!!!'); 
      return; 
    }  
  }); 
 }); 
 
</script> 

//微信分享 
  public void shareToFriend(){ 
    HttpServletRequest request = ServletActionContext.getRequest(); 
    String timeStamp = Sha1Util.getTimeStamp();//时间戳 
    String nonceStr = WxConfig.getUUID();//随机字符串，不长于32位 
    String url=request.getParameter("url"); 
    String signature = WxConfig.getSignature("APPId","APP_secret",url,timeStamp,nonceStr); 
    request.setAttribute("timeStamp",timeStamp); 
    request.setAttribute("nonceStr",nonceStr); 
    request.setAttribute("url",url); 
    request.setAttribute("signature",signature); 
    WXjssdk result = new WXjssdk(timeStamp,nonceStr,signature,url); 
    CommonUtil.returnMsg(ServletActionContext.getResponse(),new Gson().toJson(result)); 
  } 

">//jsapi_ticket 
  public final static String WEIXIN_JSAPI_TICKET_URL ="https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi"; 
   
  //access_token  
  public static String getAccessToken(String appId,String appSecret){ 
    String access_token; 
    access_token = mapToken.get("accessToken"); 
    if(access_token==null){ 
      String url = HttpUtil.WEIXIN_HOST_API + "/cgi-bin/token?grant_type=client_credential&appid="+appId+"&secret="+appSecret; 
      String menuJsonStr = HttpUtil.get(url); 
      final Type type = new TypeToken<Map<String,Object>>() {}.getType(); 
      final Map<Object,Object> accessTokenInfo = new Gson().fromJson(menuJsonStr,type); 
      try{ 
        access_token = accessTokenInfo.get("access_token").toString(); 
        Object expires_in = accessTokenInfo.get("expires_in"); 
        mapToken.put("accessToken",access_token); 
        logger.info("access_token:"+access_token+";expires_in:"+expires_in); 
      }catch (JSONException e) { 
        access_token = null; 
        e.printStackTrace(); 
        logger.error("errcode:{}:"+accessTokenInfo.get("errcode")+"errmsg:{}:"+accessTokenInfo.get("errmsg")); 
      } 
    } 
    return access_token; 
  } 
   
  //jsapi_ticket 
  public static String getJsapiTicket(String accessToken){ 
    String ticket; 
    ticket = mapTicket.get("ticket"); 
    if(ticket==null){ 
      String url = HttpUtil.WEIXIN_HOST_API + "/cgi-bin/ticket/getticket?access_token="+accessToken+"&type=jsapi"; 
      String menuJsonStr = HttpUtil.get(url); 
      final Type type = new TypeToken<Map<String,Object> ticketInfo = new Gson().fromJson(menuJsonStr,type); 
      try{ 
        ticket = ticketInfo.get("ticket").toString(); 
        String expires_in = ticketInfo.get("expires_in").toString(); 
        mapTicket.put("ticket",ticket); 
        logger.info("jsapi_ticket:"+ticket+";expires_in:"+expires_in); 
      }catch (JSONException e) { 
        ticket = null; 
        e.printStackTrace(); 
        logger.error("ticket errcode:{}:"+ticketInfo.get("errcode")+"errmsg:{}:"+ticketInfo.get("errmsg")); 
      } 
    } 
    return ticket; 
  } 
   
   //生成随机字符串UUID 
  public static String getUUID(){   
     String uuid = UUID.randomUUID().toString().trim().replaceAll("-","");   
     return uuid;   
  }  
   
  //JS-SDK Signature 
  public static String getSignature(String appId,String appSecret,String url,String timeStamp,String nonceStr){ 
    String accessToken = getAccessToken(appId,appSecret); 
    String jsapi_ticket = getJsapiTicket(accessToken); 
    logger.info("accessToken==="+accessToken); 
    String signValue = "jsapi_ticket="+jsapi_ticket+"&noncestr="+nonceStr+"×tamp="+timeStamp+"&url="+url; 
    logger.info("微信JS-SDK权限验证的签名串："+signValue); 
    //这个签名.主要是给加载微信js使用.别和上面的搞混了. 
    String signature = Sha1Util.getSha1((signValue)); 
    logger.info("微信JS-SDK权限验证的签名："+signature); 
    return signature; 
  }