1.安装SDK
npm install weixin-js-sdk –save
2.微信分享的封装工具类（wxShare.js)
/* eslint-disable */import Vue from ‘vue’;import wx from ‘weixin-js-sdk’;//存储服务器授权链接 const jsSDKAuth = ‘XXX/wx_jssign_package.json’; //存储各个链接的签名信息const signMap = new Map(); // 设置默认的分享信息，因为如分享图、请求授权项、隐藏授权项等基本不变，此处设置直接引用，避免使用时繁琐设置const defaultWxShareConfig = { title: “分享标题（通常是动态的）”, desc: ‘分享描述（通常是动态的）’,link: location.href,imgUrl: ‘分享图片（通常是128*128的logo）’,jsApiList: [‘onMenuShareTimeline’, ‘onMenuShareAppMessage’, ‘hideMenuItems’, ‘closeWindow’],hideMenuList: [‘menuItem:editTag’, ‘menuItem:delete’, ‘menuItem:originPage’, ‘menuItem:readMode’,’menuItem:openWithQQBrowser’, ‘menuItem:openWithSafari’, ‘menuItem:share:email’, ‘menuItem:share:brand’]} //存储临时的分享信息const wxShareConfig = {}const wxShare = { //各个页面加载后，调用此方法，传入的参数config是对象，其属性参考defaultWxShareConfigupdateWxShareConfig(config = {}) {wxShareConfig.title = config.title || defaultWxShareConfig.title;wxShareConfig.desc = config.desc || defaultWxShareConfig.desc; wxShareConfig.link = config.link || defaultWxShareConfig.link;wxShareConfig.imgUrl = config.imgUrl || defaultWxShareConfig.imgUrl; wxShareConfig.jsApiList = config.jsApiList || defaultWxShareConfig.jsApiList; wxShareConfig.hideMenuList = config.hideMenuList || defaultWxShareConfig.hideMenuList; //微信中二次分享的处理，截取到有效的分享链接var authUrl = wxShareConfig.link.split(“#”)[0];authUrl = authUrl.split(“?”)[0]; //判断是否已经签名了if (signMap.has(authUrl)) {this._wxConfigJSSDK(signMap.get(authUrl), wxShareConfig);} else {this._wxShareAuth(authUrl);}}, //从服务器获取某分享链接的签名信息，并存储起来_wxShareAuth(authUrl) { //此处我使用的是自己封装的网络请求方法const promise = Vue.http.get(jsSDKAuth + “?url=” + encodeURIComponent(authUrl));promise.then(res => { //此处请根据各自的服务器返回数据文档进行操作if (res.data.code == 200) {//分享链接授权签名信息const sign = res.data.data;signMap.set(authUrl, sign);this._wxConfigJSSDK(sign);}});promise.catch((err) => {console.log(err.response);})}, //将签名信息更新到微信的SDK中_wxConfigJSSDK(shareSign) {wx.config({debug: false,appId: shareSign.appId,timestamp: shareSign.timestamp,nonceStr: shareSign.nonceStr,signature: shareSign.signature,jsApiList: [‘onMenuShareAppMessage’, ‘onMenuShareTimeline’]}) // 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。wx.ready(function() { const {title,desc,link,imgUrl} = wxShareConfig;wx.onMenuShareAppMessage({ title,desc,link,imgUrl,success: function() {console.log(“分享成功”);},fail: function() {console.log(“分享失败”);},cancel: function() {console.log(“取消分享”);}})wx.onMenuShareTimeline({title,link,imgUrl,success: function() {console.log(“分享成功”);},cancel: function() { console.log(“取消分享”);}})}); // 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。wx.error(function(res) {console.log(“分享失败: error”, res);});}}//导出工具类export default wxShare;//将工具类添加到Vue静态方法方便调用Vue.prototype.$wxShare = wxShare;
3.调用方式
1）mian.js中引入：import ‘./utils/wxShare’;
2）页面中调用：
//页面加载完成后调用activated() {var _this = this;_this.uuid = _this.$route.query.uuid;var shareUrl = global.BASE_SHARE_URL + ‘grade?uuid=’ + _this.uuid;this.$wxShare.updateWxShareConfig({ title:’标题’, desc: ‘简介’, link: shareUrl });}