小程序获取微信用户的openid

//index.js//获取应用实例const app = getApp()Page({  globalData: {    appid: '11121221a89e0',//appid需自己提供    secret: '1212',//secret需自己提供，此处的  },  data: {    motto: '技术带来改变',    userInfo: {},    hasUserInfo: false,    canIUse: wx.canIUse('button.open-type.getUserInfo')  },  //事件处理函数  bindViewTap: function() {    wx.switchTab({      url: '../task/task'    })  },      onLoad: function () {    var that = this    var user = wx.getStorageSync('user') || {};    var userInfo = wx.getStorageSync('userInfo') || {};    if ((!user.openid || (user.expires_in || Date.now()) < (Date.now() + 600)) && (!userInfo.nickName)) {      wx.login({        success: function (res) {          if (res.code) {            wx.getUserInfo({              success: function (res) {                var objz = {};                objz.avatarUrl = res.userInfo.avatarUrl;                objz.nickName = res.userInfo.nickName;                console.log(objz);                wx.setStorageSync('userInfo', objz);//存储userInfo              }            });            var d = that.globalData;//这里存储了appid、secret、token串              var l = 'https://api.weixin.qq.com/sns/jscode2session?appid=' + d.appid + '&secret=' + d.secret + '&js_code=' + res.code + '&grant_type=authorization_code';            wx.request({              url: l,              data: {},              method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT                // header: {}, // 设置请求的 header                success: function (res) {                var obj = {};                obj.openid = res.data.openid;                obj.expires_in = Date.now() + res.data.expires_in;                console.log(obj);                wx.setStorageSync('user', obj);//存储openid                }            });          } else {            console.log('获取用户登录态失败！' + res.errMsg)          }        }      });    }  },  getUserInfo: function(e) {    app.globalData.userInfo = e.detail.userInfo    this.setData({      userInfo: e.detail.userInfo,      hasUserInfo: true    })  },  LoadUserSub: function (res) {    var openid=res;    console.log(openid);  }})

app.js中的代码