你好，请参考：https://developers.weixin.qq.com/doc/offiaccount/Getting_Started/Explanation_of_interface_privileges.html

<script type="text/javascript" src="./file/my_tips.js"></script>
    <script type="text/javascript" src="./file/jquery.min.js"></script>
    <script type="text/javascript" src="https://res.wx.qq.com/open/js/jweixin-1.6.0.js"></script>
    <script type="text/javascript">
        var title = "邮捷效率优化平台介绍";
        var desc = "欢迎使用邮捷效率优化平台！";


        alert(window.location.href.split('#')[0])


        $.ajax({
          async: true,
          url: 'test',
          type: 'POST',
          dateType: 'json',
          data:{
            shareUrl: encodeURIComponent(window.location.href.split('#')[0])
          },
          success: function(response, status, xhr){
            console.log('状态为：' + status + ',状态是：' + xhr.statusText);
            console.log('appid:'+response.appId)
            console.log('timestamp:'+response.timestamp)
            console.log('nonceStr:'+response.nonceStr)
            wx.config({
              debug: true, //调试阶段建议开启，关闭就不弹提示了
              appId: response.appId,//APPID
              timestamp: response.timestamp,//上面main方法中拿到的时间戳timestamp
              nonceStr: response.nonceStr,//上面main方法中拿到的随机数nonceStr
              signature: response.signature,//上面main方法中拿到的签名signature
              //需要调用的方法接口
              jsApiList: ['updateAppMessageShareData','updateTimelineShareData']
              });


            //ready
            wx.ready(function () {   //需在用户可能点击分享按钮前就先调用
              wx.updateAppMessageShareData({
                title: title,
                desc: desc,
                link: 'https://xxy.91betterwei.com/lnn-test/youjie.html',
                imgUrl: 'https://xxy.91betterwei.com/xeditor-cdn/developer/Coder004/data-list-demo/src/pages/images/front.png',
                success: function(){
                  alert("设置成功分享");
                }
              })
              // shareData = {
              //    title: title,  // 分享标题
              //    desc: desc,            // 分享描述
              //    link: window.location.href, // 分享链接，该链接域名或路径必须与当前页面对应的公众号JS安全域名一致
              //    imgUrl: "https://xxy.91betterwei.com/xeditor-cdn/developer/Coder004/data-list-demo/src/pages/images/front.png",  // 分享图标
              //    success: function() {
              //      alert("设置成功分享");
              //      // 设置成功
              //    }
              //  };
                // 1.4.0 新接口 (只调用这个接口在安卓下是无效的)
                // wx.updateAppMessageShareData(shareData);
                // wx.updateTimelineShareData(shareData);
            });



          }
        })

    </script>

还是上一下源码吧，我的目标是做一个自定义标题、简介，图片为封面的h5页面，但是一直不成功

开发工具调试的信息如下：