zkyxcx/app.js

//app.js
App({
  onLaunch: function () {
    this.getOpenid();
  },
  getOpenid: function () {
    var openid;
    var _this = this;
    wx.getStorage({
      key: 'openid',
      success: function (res) {
        openid = res.data
        _this.globalData.openid = openid
      },
      fail: res => {
        // 登录
        wx.login({
          success: res => {
            console.log(res)
            // 发送 res.code 到后台换取 openId, sessionKey, unionId
            wx.request({
              url: 'https://caos.tederen.com/api/openid',
              method: 'GET',
              data: {
                code: res.code
              },
              success: res => {
                if (res.data.data.openid) {
                  _this.globalData.openid = res.data.data.openid
                  wx.setStorage({
                    key: 'openid',
                    data: res.data.data.openid,
                  })
                }
              }
            })
          }
        })
      }
    })
  },
  globalData: {
    userInfo: null,
    host:'https://caos.tederen.com',
    openid: '',
  }
})