根据城市名称获取天气信息

 [Route("api/Weather/weather")]
        [HttpGet]
        public Reponse<WeatherRes> weather(string city)
        {
            var JsonStr = Get("http://wthrcdn.etouch.cn/weather_mini?city=" + city);
            var result = JsonConvert.DeserializeObject<WeatherRes>(JsonStr);
            return Success(result);
        }
        public string Get(string url)
        {
            string result = "";
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
            // Stream stream = resp.GetResponseStream();//原来是这个 但是服务器做了数据压缩 下面做数据解压
            Stream stream = new System.IO.Compression.GZipStream(resp.GetResponseStream(), System.IO.Compression.CompressionMode.Decompress);
            try
            {
                //获取内容
                using (StreamReader reader = new StreamReader(stream))
                {
                    result = reader.ReadToEnd();
                }
            }
            finally
            {
                stream.Close();
            }
            return result;
        }