微信分享的标题、缩略图、连接及描述设置方法

微信分享的标题、缩略图、连接及描述该如何设置，使用微信分享过程中会遇到这个情况，无解的朋友可以看看下面的代码

<script>
varimgUrl="http://topic.xcar.com.cn/201403/ad_q3/pic/banner.jpg";
varlineLink="http://topic.xcar.com.cn/201403/ad_q3/index.php";
vardescContent="http://topic.xcar.com.cn/201403/ad_q3/index.php";
varshareTitle="【奥迪Q3开启尊享礼遇季】报名试驾，赢取精美礼品";
varappid="wxc9937e3a66af6dc8";

functionshareFriend(){
WeixinJSBridge.invoke("sendAppMessage",{
"appid":appid,
"img_url":imgUrl,
"img_width":"640",
"img_height":"640",
"link":lineLink,
"desc":descContent,
"title":shareTitle
},function(res){
_report("send_msg",res.err_msg);
})
}
functionshareTimeline(){
WeixinJSBridge.invoke("shareTimeline",{
"img_url":imgUrl,
"img_width":"640",
"img_height":"640",
"link":lineLink,
"desc":descContent,
"title":shareTitle
},function(res){
_report("timeline",res.err_msg);
});
}
functionshareWeibo(){
WeixinJSBridge.invoke("shareWeibo",{
"content":descContent,
"url":lineLink,
},function(res){
_report("weibo",res.err_msg);
});
}
//当微信内置浏览器完成内部初始化后会触发WeixinJSBridgeReady事件。
document.addEventListener("WeixinJSBridgeReady",functiononBridgeReady(){

//发送给好友
WeixinJSBridge.on("menu:share:appmessage",function(argv){
shareFriend();
});

//分享到朋友圈
WeixinJSBridge.on("menu:share:timeline",function(argv){
shareTimeline();
});

//分享到微博
WeixinJSBridge.on("menu:share:weibo",function(argv){
shareWeibo();
});
},false);
</script>