微信jssdk逻辑在vue中的运用详解

import wx from 'weixin-js-sdk';

wx.config({
 debug: true,
 appId: '',
 timestamp: ,
 nonceStr: '',
 signature: '',
 jsApiList: []
});

wx.ready(() => {
 // do something...
});

wx.error((err) => {
 // do something...
});

# utils/
.
├── common.js      # 通用函数
└── lib
  └── wechat      # 微信相关代码
    ├── auth     # 微信用户登陆获取信息相关代码
    │  ├── auth.js
    │  └── index.js
    ├── config    # jssdk 初始化相关代码
    │  └── index.js
    ├── helper.js  # 微信相关操作
    └── share    # 分享接口相关代码
      └── index.js

import sdk from 'weixin-js-sdk';

export function initSdk({ appid, timestamp, noncestr, signature, jsApiList }) { // 从后端获取
 sdk.config({
  debug: process.env.VUE_APP_ENV !== 'production',
  appId: appid,
  timestamp: timestamp,
  nonceStr: noncestr,
  signature: signature,
  jsApiList: jsApiList
 });
}

// example.vue
export default {
 name: 'example',

 wechatShareConfig() {
  return {
   title: 'example',
   desc: 'example desc',
   imgUrl: 'http://xxx/example.png',
   link: window.location.href.split('#')[0]
  };
 }
}

// wechatMixin.js
import { share } from '@/utils/lib/wechat/share';

// 获取 wechat 分享接口配置
function getWechatShareConfig(vm) {
 const { wechatShareConfig } = vm.$options;
 if (wechatShareConfig) {
  return typeof wechatShareConfig === 'function'
   ? wechatShareConfig.call(vm)
   : wechatShareConfig;
 }
}

const wechatShareMixin = {
 created() {
  const wechatShareConfig = getWechatShareConfig(this);
  if (wechatShareConfig) {
   share({ ...wechatShareConfig });
  }
 }
};

export default wechatShareMixin;

// utils/lib/wechat/share
import { getTicket } from '@/utils/lib/wechat/helper'; // 签名接口
import { initSdk } from '@/utils/lib/wechat/config';
import sdk from 'weixin-js-sdk';

// 接口清单
const JS_API_LIST = ['onMenuShareAppMessage', 'onMenuShareTimeline'];

// 消息分享
function onMenuShareAppMessage(config) {
 const { title, desc, link, imgUrl } = config;
 sdk.onMenuShareAppMessage({ title, desc, link, imgUrl });
}

// 朋友圈分享
function onMenuShareTimeline(config) {
 const { title, link, imgUrl } = config;
 sdk.onMenuShareTimeline({ title, link, imgUrl });
}

export function share(wechatShareConfig) {
 if (!wechatShareConfig.link) return false;

 // 签名验证
 getTicket(wechatShareConfig.link).then(res => {
  // 初始化 `jssdk`
  initSdk({
   appid: res.appid,
   timestamp: res.timestamp,
   noncestr: res.noncestr,
   signature: res.signature,
   jsApiList: JS_API_LIST
  });

  sdk.ready(() => {
   // 初始化目标接口
   onMenuShareAppMessage(wechatShareConfig);
   onMenuShareTimeline(wechatShareConfig);
  });
 });
}

// router.js

//...
routes: [
 {
  path: '/',
  component: Example,
  meta: {
   wechat: {
    share: {
     title: 'example',
     desc: 'example desc',
     imgUrl: 'https://xxx/example.png'
    }
   }
  }
 }
]
//...

// 初始化分享接口
function initWechatShare (config) {
 if (config) {
  share(config);
 }
}

router.beforeEach((to, from, next) => {
 const { shareConfig } = to.meta && to.meta.wechat;
 const link = window.location.href;

 if (!shareConfig) next();

 initWechatShare({ ...shareConfig, link })；
 switchTitle(shareConfig.title); // 切换标题
 next();
});