微信小程序如何获取地址

 {{data.longitude}}
 {{data.latitude}}
 {{address}}

var QQMapWX = require('../js/qqmap-wx-jssdk.js');
var qqmapsdk;
Page({
 data:{
  data:"",
  str:"",
  address:""
 },
 onLoad: function () {
  let _this = this;
  // 实例化API核心类
  qqmapsdk = new QQMapWX({
   key: 'key'
  });
  // Promise 获取地址
  let gets = new Promise((resolve, reject) => {
   wx.getLocation({
    type: 'wgs84',
    success:resolve
   })
  }).then(function(res){
   console.log(res)
   _this.setData({
    data:res
   })
  })

  // 正常方式获取地址
  wx.getLocation({
   type: 'wgs84',
   success:function(res){
    _this.setData({
     str: _this.res
    })
    console.log(res)
    var demo = new QQMapWX({
     key: 'key'
    });
    // 解析地址
    demo.reverseGeocoder({//地址解析
     location: {
      latitude: res.latitude,
      longitude: res.longitude
     },
     success: function (res) {//转为具体地址
      console.log(res);
      //获得地址
      _this.setData({
       address: res.result.address
      })
     },
     fail: function (res) {
      console.log(res);
     }
    });
   }
  })
 },