微信小程序自动获取地理位置

wx.getLocation({
      type: 'gcj02',
      success(res) {
        const latitude = res.latitude
        const longitude = res.longitude
        wx.request({
          url: server + '/wechat/message/getlocation?lon=' + longitude + '&lat=' + latitude,
          success: function (res) {
            var da = res.data.result.formatted_address;
            that.setData({ HomeAddress: da });
          }
        })
      }
    })

public function getlocation(){
        $get = input('get.');
        $url = 'http://api.map.baidu.com/geocoder/v2/?ak=D6WOzHaymzVVKvgiy8UbhQEznkgeK6BD&location='.$get['lat'].','.$get['lon'].'&output=json';
        $datas = $this->curlGet($url);
        echo $datas;
    }