wx.getLocation({ //没有特别说明的都是固定写法
    type: ‘wgs84‘,
    success: function (res) {
      console.log(‘location‘, res);
      var locationString = res.latitude + "," + res.longitude;
      wx.request({
        url: ‘http://apis.map.qq.com/ws/geocoder/v1/‘,
        data: {
          "key": "xxxx-xxxx-xxxx-xxxx-xxxx-xxxx",
          "location": locationString
        },
        method: ‘GET‘,
        success: function (r) {
          //输出一下位置信息
          console.log(‘用户位置信息‘,r.data.result.address);
          //r.data.result.address获得的就是用户的位置信息，将它保存到一个全局变量上
          getApp().globalData.locationInfo = r.data.result.address;
          //这步是将位置信息保存到本地缓存中，key = value的形式
          try {
            wx.setStorageSync(‘locationInfo‘, r.data.result.address)
          } catch (e) {
            console.log(e)
          }
        }
      });
    }
  });