vue 微信分享及ios二次微信分享invalid signature解决

 

npm install weixin-js-sdk
页面中引入
import wx from 'weixin-js-sdk'

methods: {
	init() {
		var that = this;
		var url = encodeURIComponent(window.location.href.split('#')[0]);
		http.post(api.getSdk,url,function(data){
				let appId = data.appId;
				let timestamp = data.timestamp;
				let signature = data.signature;
				let nonceStr = data.nonceStr;
				that.initwx(appId, timestamp, signature, nonceStr);
		})	
	},

	initwx(appId, timestamp, signature, nonceStr) {
		var link = window.location.href;
		var imgUrl = 'https格式的图片'
		var shareData = {
			"imgUrl": imgUrl,// 分享显示的缩略图地址 ,根据自己情况而定
			"link": link,// 分享地址
			"desc": '描述',// 分享描述
			"title": '标题'// 分享标题
		};
		wx.config({
			debug: false,//调试模式
			appId: appId,// 公众号的唯一标识
			timestamp: timestamp,//生成签名的时间戳
			nonceStr: nonceStr,//生成签名的随机串
			signature: signature,
			jsApiList: ['onMenuShareTimeline', //
			'onMenuShareAppMessage'] //
		});
		wx.checkJsApi({
			jsApiList: ['onMenuShareTimeline', 'onMenuShareAppMessage']
		});
		wx.ready(function() {
			wx.onMenuShareTimeline(shareData); //分享到朋友圈
			wx.onMenuShareAppMessage(shareData); //分享给朋友
		});
	}
},

created(){
    this.init();
},

备注：ios第二次分享 会出现invalid signature

原因分享后出现微信会在链接会自动加以下字符串，再次签名的时候，因为&特殊字符传给后台，后台未处理，需要对链接encodeURIComponent处理，就不会出现invalid问题

朋友圈   from=timeline&isappinstalled=0
微信群   from=groupmessage&isappinstalled=0
好友分享 from=singlemessage&isappinstalled=0