//已知的经纬度
        var latitude = this.data.latitude;
        var longitude = this.data.longitude 
        var key = 'FK4BZ-VQSCK-XQGJQ-AUH4M-MXST3-OLFQQ' //写自己申请的key
    wx.getLocation({
          success: function (res) {
            wx.request({
              url: `https://apis.map.qq.com/ws/geocoder/v1/?location=${latitude},${longitude}&key=${key}`,
              success: function (res) {
                console.log(res);
                //根据自己项目需求获取res内容
                var addresscity = res.data.result.address_component.city
                if (addresscity.indexOf('市') !== -1) { //这里是去掉“市”这个字
                  addresscity = addresscity.slice(0, addresscity.indexOf('市'));
                  console.log(addresscity);
                }
                wx.setStorageSync('locationCity', addresscity)
                that.setData({
                  addresscity: addresscity
                });
              }
            })
          },
        })

打印请求到的res