vue專案中微信登入的實現操作

阿新 • • 發佈：2020-09-09

1、下載元件 wxlogin

npm install vue-wxlogin --save

2、引入元件，給元件傳參

3、重定向的url應該是微信登入官網中的微信授權作用域

4、如果url裡面有埠號，微信授權作用裡面也要有

5、重定向的url：需要在http://tool.chinaz.com/tools/urlencode.aspx中轉碼

6、微信登入成功後，會自動重定向到新地址，此時的位址列中就有code引數

7、如果報錯說不能從元件跳到頁面，那就找到wxlogin元件裡面的iframe標籤，加上這個屬性：sandbox=“allow-scripts allow-top-navigation allow-same-origin”

報錯內容：

qrconnect?scope=snsapi_login&redirect_uri=http%3a%2f%2f%2f&state=&login_type=jssdk&self_redirect=false&style=black&href=:84 Unsafe JavaScript attempt to initiate navigation for frame with origin 'http://localhost:9020' from frame with URL 'https://open.weixin.qq.com/connect/qrconnect?app&scope=snsapi_login&redirect_uri=http%3a%2f%2f&state=&login_type=jssdk&self_redirect=false&style=black&href='. The frame attempting navigation is targeting its top-level window,but is neither same-origin with its target nor has it received a user gesture. See https://www.chromestatus.com/features/5851021045661696.```

補充知識：vue移動端微信授權登入外掛封裝

1.新建wechatAuth.js檔案

const qs = require('qs')
//應用授權作用域，snsapi_base （不彈出授權頁面，直接跳轉，只能獲取使用者openid），snsapi_userinfo （彈出授權頁面，可通過openid拿到暱稱、性別、所在地。並且，即使在未關注的情況下，只要使用者授權，也能獲取其資訊）
const SCOPES = ['snsapi_base','snsapi_userinfo']

class VueWechatAuthPlugin {

 constructor () {
 this.appid = null
 this.redirect_uri = null
 this.scope = SCOPES[1]
 this._code = null
 this._redirect_uri = null
 }

 install (Vue,options) {
 let wechatAuth = this
 this.setAppId(options.appid)
 Vue.mixin({
 created: function () {
 this.$wechatAuth = wechatAuth
 },})

 }

 static makeState () {
 return Math.random().toString(36).substring(2,15) +
 Math.random().toString(36).substring(2,15)
 }

 setAppId (appid) {
 this.appid = appid
 }

 set redirect_uri (redirect_uri) {
 this._redirect_uri = encodeURIComponent(redirect_uri)
 }

 get redirect_uri () {
 return this._redirect_uri
 }

 get state () {
 return localStorage.getItem('wechat_auth:state')
 }

 set state (state) {
 localStorage.setItem('wechat_auth:state',state)
 }

 get authUrl () {
 if (this.appid === null) {
 throw 'appid must not be null'
 }
 if (this.redirect_uri === null) {
 throw 'redirect uri must not be null'
 }
 this.state = VueWechatAuthPlugin.makeState()
 return `https://open.weixin.qq.com/connect/oauth2/authorize?appid=${this.appid}&redirect_uri=${this.redirect_uri}&response_type=code&scope=${this.scope}&state=${this.state}#wechat_redirect`
 }

 returnFromWechat (redirect_uri) {
 let parsedUrl = qs.parse(redirect_uri.split('?')[1])
 if (process.env.NODE_ENV === 'development') {
 // console.log('parsedUrl: ',parsedUrl)
 this.state = null
 this._code = parsedUrl.code
 } else {
 if (this.state === null) {
 throw 'You did\'t set state'
 }
 if (parsedUrl.state === this.state) {
 this.state = null
 this._code = parsedUrl.code
 } else {
 this.state = null
 throw `Wrong state: ${parsedUrl.state}`
 }
 }
 }

 get code () {
 if (this._code === null) {
 throw 'Not get the code from wechat server!'
 }
 // console.log(this)
 // console.log('this._code: ' + this._code)
 let code = this._code
 this._code = null
 // console.log('code: ' + code)
 return code
 }
}

const vueWechatAuthPlugin = new VueWechatAuthPlugin()

if (typeof window !== 'undefined' && window.Vue) {
 window.Vue.use(VueWechatAuthPlugin)
}

export default vueWechatAuthPlugin

2.main.js中匯入

import wechatAuth from './plugins/wechatAuth'//微信登入外掛
const qs= require('qs');
Vue.use(wechatAuth,{appid: XXXXXXXXX});

3.路由鉤子中可以進行相關操作

router.beforeEach((to,from,next) => {
 if (store.state.loginStatus == 0) {
 //微信未授權登入跳轉到授權登入頁面
 let url = window.location.href;
 //解決重複登入url新增重複的code與state問題
 let parseUrl = qs.parse(url.split('?')[1]);
 let loginUrl;
 if (parseUrl.code && parseUrl.state) {
 delete parseUrl.code;
 delete parseUrl.state;
 loginUrl = `${url.split('?')[0]}?${qs.stringify(parseUrl)}`;
 } else {
 loginUrl = url;
 }
 wechatAuth.redirect_uri = loginUrl;
 store.dispatch('setLoginStatus',1);
 window.location.href = wechatAuth.authUrl
 } else if (store.state.loginStatus == 1) {
 try {
 wechatAuth.returnFromWechat(to.fullPath);
 } catch (err) {
 store.dispatch('setLoginStatus',0)
 next()
 }
 store.dispatch('loginWechatAuth',wechatAuth.code).then((res) => {
 if (res.status == 1) {
 store.dispatch('setLoginStatus',2)
 } else {
 store.dispatch('setLoginStatus',0)
 }
 next()
 }).catch((err) => {
 next()
 })
 }else {
 next()
 }
});

2018.8.31更新

更新微信授權登入vue-cli 3.x與2.x的demo vue-wechat-login，檢視對應分支即可。

2019.7.23更新

程式碼進行了相關重構 vue-wechat-login

以上這篇vue專案中微信登入的實現操作就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支援我們。