支付宝小程序开发-利用支付宝的SDK获取用户User ID

支付宝小程序在前端只能获取到用户昵称和头像，但是这是远远不够的，我们至少需要获取到用户的支付宝User ID，这个时候就必须在后端利用支付宝的SDK来获取了，当然前端要发出 httprequest 请求，下面结合前两篇的例子进行修改

支付宝小程序前端

app.js

App({
  globalData:{
    studentid:'',
    username:'',
    apiurl: 'http://XXX'
  }, 
  getUserInfo(){
    var that = this
    return new Promise((resovle,reject)=>{
      if(this.userInfo) resovle(this.userInfo);
      
      //调用用户授权 api 获取用户信息
      my.getAuthCode({
        scopes: 'auth_user', 
        success:(res) =>{
           if (res.authCode) {    
             my.httpRequest({
               url: that.globalData.apiurl + '/api/AliPay/GetUserInfo',
               method: 'GET',
               data: {
                  auth_code: res.authCode
               },
               dataType: 'json',
               success: function(res) {
                  that.globalData.studentid = res.data.data.student_id;
                  that.globalData.username = res.data.data.user_name;
                  //获取用户信息,照片、昵称
                  my.getAuthUserInfo({
                    scopes: ['auth_user'],
                    success: (res) => {
                      that.userInfo = res;
                      resovle(that.userInfo);
                   },
                   fail:() =>{
                      reject({});
                   }
                  });
                  console.log('返回UserDetail', res.data.data);         
               },
               fail: function(res) {
                  my.alert({content: 'fail'});
               },
               complete: function(res) {
                  my.hideLoading();
               }
            });
          }
        },
        fail:() =>{
          reject({});
        }
      });
    });
  },

  onLaunch(options) {

  },
  onShow(options) {
    // 从后台被 scheme 重新打开
  },
});