my_loan/htmldev/shiningWxMini/pages/login/login.js

const { miniLogin } = require('../../api/common')
const { login, sessionStorageKey } = require('../../api/request')
const app = getApp()
Page({

  /**
   * 页面的初始数据
   */
  data: {
    booLock: false
  },
  wxCode: '',

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad(options) {
    this.getWxCode()
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady() {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow() {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide() {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload() {
  },
  async getPhoneNumber(e) {
    const isTab = app.globalData.tabBarList.map(item => item.pagePath)
    const { errMsg, encryptedData, iv } = e.detail
    if (errMsg === 'getPhoneNumber:ok') {
      this.setData({
        booLock: true
      })

      try {
        const { status, data } = await miniLogin({
          wxCode: this.wxCode,
          encryptedData,
          iv
        })
        if (status) {
          try {
            wx.setStorageSync(sessionStorageKey, data.token)
          } catch (err) {}

          await app.fetchUserData()

          const pages = getCurrentPages()
          if (pages.length > 1) {
            const route = pages[pages.length - 2]

            route.bindCallBack && route.bindCallBack()
            if (isTab.findIndex(item => item === route.route) > -1) {
              wx.reLaunch({
                url: '/' + route.route
              })
            } else {
              wx.navigateBack({
                delta: 1
              })
            }
          }
        } else {
          wx.showToast({
            title: '登录出错了，请重试',
            icon: 'none'
          })
          this.getWxCode()
        }
      } catch (e) {
        this.getWxCode()
      }

      this.setData({
        booLock: false
      })
    }
  },
  async getWxCode() {
    try {
      this.wxCode = await login()
    } catch (e) {}
  }
})