1hjz-mini/app.js

//app.js
App({
  gw: {
    hostUrl: 'https://test.1hjz.cn',
    mapUrl:'https://api.map.baidu.com',
    systemInfo : null,//系统信息
  },
  onLaunch: function () {
    // 展示本地存储能力
    var logs = wx.getStorageSync('logs') || []
    logs.unshift(Date.now())
    wx.setStorageSync('logs', logs)

    // 登录
    wx.login({
      success: res => {
        var code = res.code;
        this.getSessionKey(code);
      }
    })
    this.gw.systemInfo = wx.getSystemInfoSync();
  },
  getSessionKey: function (code) {
    var that = this;
    wx.request({
      url: this.gw.hostUrl + '/mall/wxa/auth/session',
      method: 'post',
      data: {
        code: code,
        state: '5'
      },
      header: {
        'Content-Type': 'application/x-www-form-urlencoded'
      },
      success: function (res) {
        //--init data        
        var data = res.data;
        if (data.code != 0) {
          wx.showToast({
            title: data.msg,
            icon: 'none',
            duration: 2000
          });
          return false;
        }

        // that.globalData.userInfo['sessionId'] = data.response.session_key;
        that.globalData.openid = data.response.openid;
        that.onLoginUser();
        
        // that.prepareOrder();
        // 获取用户信息
        wx.getSetting({
          success: res => {
            // if (res.authSetting['scope.userInfo']) {
            // 已经授权，可以直接调用 getUserInfo 获取头像昵称，不会弹框
            wx.getUserInfo({
              success: res => {
                console.log("userInfo" + res.userInfo)
                // 可以将 res 发送给后台解码出 unionId
                that.globalData.userInfo = res.userInfo;
                // this.onLoginUser();
                // 发送 res.code 到后台换取 openId, sessionKey, unionId
                that.commitUserInfo(that.globalData.openid, res.encryptedData, res.iv);
                // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回
                // 所以此处加入 callback 以防止这种情况
                if (that.userInfoReadyCallback) {
                  that.userInfoReadyCallback(res)
                }
              }
            })
            // }
          }
        })
      },
      fail: function (e) {
        wx.showToast({
          title: '网络异常！err:getsessionkeys',
          icon:'none',
          duration: 2000
        });
      },
    });
  },
  onLoginUser: function () {
    var that = this;
    wx.request({
      url: this.gw.hostUrl + '/mall/wxa/auth/login',
      method: 'post',
      data: {
        openid: this.globalData.openid
      },
      header: {
        'Content-Type': 'application/x-www-form-urlencoded'
      },
      success: function (res) {
        //--init data        
        var data = res.data;
        var status = data.code;
        if (status != 0) {
          wx.showToast({
            title: data.msg,
            icon: 'none',
            duration: 3000
          });
          return false;
        }
        that.globalData.sessionId= data.response.sessionId;
        wx.setStorageSync('sessionId', data.response.sessionId);
        console.log('sessionId : ' + data.response.sessionId);
        
      },
      fail: function (e) {
        wx.showToast({
          title: '网络异常！err:authlogin',
          icon: 'none',
          duration: 2000
        });
      },
    });
  },
  commitUserInfo: function (openid, encryptedData, iv) {
    var that = this;
    wx.request({
      url: this.gw.hostUrl + '/mall/wxa/auth/userinfo',
      method: 'POST',
      data: {
        openid: openid,
        encryptedData: encryptedData,
        iv: iv
      },
      header: {
        'Content-Type': 'application/x-www-form-urlencoded',
      },
      success: function (res) {
        //--init data        
        var data = res.data;
        var status = data.code;
        if (status != 0) {
          wx.showToast({
            title: data.msg,
            icon: 'none',
            duration: 3000
          });
          return false;
        }
      },
      fail: function (e) {
        wx.showToast({
          title: '网络异常！err:authlogin',
          icon: 'none',
          duration: 2000
        });
      },
    });
  },
  globalData: {
    userInfo: null,
    sessionId: '',
    openid: ''
  }
})