小程序授权登陆的解决方法（附代码）

{"pages": [    "pages/home/index",     "pages/login/index",     ...   ]}

const App = getApp()import { loginModel } from '../../models/login.js'import { MineModel } from '../../models/mine.js'import { encodeUnicode } from '../../utils/index.js'const ModelLogin = new loginModel()const Modelmine = new MineModel()Page({  data: {    logged: !1,    isauth: false,    locked: false  },  onLoad: function(options) {    // 返回到之前要刷新    var pages = getCurrentPages() // 获取页面栈    var prevPage = pages[pages.length - 2] // 前一个页面    prevPage.setData({      isBack: true    })  },  onShow: function() {    // 如果已经授权则显示登录,直接登录不调用授权    App.WxService.getSetting().then(res => {      if (res.authSetting['scope.userInfo']) {        this.setData({          isauth: true        })      }    })    //token 不能在page外面定义，变量写在 page 外面有缓存    const token = App.WxService.getStorageSync('utoken')    // 如果有token显示已经授权    this.setData({      logged: !!token    })    token && setTimeout(this.goBack, 1500)  },  login() {    this.wechatSignUp()  },  goBack() {    // 返回登录之前的页面    wx.navigateBack({      delta: 1    })  },  // 登陆注册  wechatSignUp(cd) {    // 上锁如果正在请求接口那么就返回    if (this.data.locked) {      return    }    this.data.locked = true    //注册或者登陆获取token    let code = ''    App.WxService      .login()      .then(data => {        code = data.code        wx.setStorageSync('logincode', data.code)        return App.WxService.getUserInfo()      })      .then(data => {        // 请求后台登录注册接口        return ModelLogin.wechatSignUp({          encrypteData: data.encryptedData,          iv: data.iv,          rawData: encodeUnicode(data.rawData), // 编码          signature: data.signature,          code: code        })      })      .then(data => {        this.data.locked = false        if (data.data.token == '') {          wx.showToast({            title: '登录失败',            icon: 'none'          })          return        }        App.WxService.setStorageSync('utoken', data.data.token)        // 访问后台接口获取用户信息        ModelLogin.getVipInfo({ token: data.data.token }).then(res => {          App.globalData.userInfo = res.data.userInfo          // 返回上一页          this.goBack()        })      })      .catch(err => {        this.data.locked = false        console.log(err)      })  }})

<view class="login-container">  <view class="login" wx:if="{{ !logged }}">    <view class="app-info">      <image class="app-logo" src="./s-toplogo@2x.png" />      <text class="app-name">商城</text>    </view>    <view class="alert">      <view class="alert-title" wx:if="{{!isauth}}">请同意授权</view>      <view class="alert-title" wx:if="{{isauth}}">请登录</view>      <view class="alert-desc">        <view class="alert-text">为了让头号买手可以更好的为您服务</view>      </view>    </view>    <button type='primary' wx:if="{{!isauth}}" class="sui-f16" open-type="getUserInfo" bind:getuserinfo="wechatSignUp">确认授权</button>    <button type="primary" wx:if="{{isauth}}" class="weui-btn" bindtap="login">确认登录</button>  </view>  <view class="logged" wx:else>    <image class="logged-icon" src="./s-toplogo@2x.png" />    <view class="logged-text">近期你已经授权登陆过商城</view>    <view class="logged-text">自动登录中</view>  </view></view>