HttpPostZipHelper

        /// <summary>
        ///
        /// </summary>
        /// <param name="url">请求地址</param>
        /// <param name="postData">json请求参数</param>
        /// <param name="reqType">请求类型</param>
        /// <returns></returns>
        public static T PostGZipResponse<T>(string url, string postData, string reqType) where T : class, new()
        {
            T result = default(T);
            if (!(url.Contains("http://") || url.Contains("https://")))
            {
                url = "http://" + url;
            }

            byte[] bytes = Encoding.UTF8.GetBytes(postData);
            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
            req.Method = "POST";
            req.ContentLength = bytes.Length;
            req.ContentType = reqType;
            
            using (Stream stream = req.GetRequestStream())
            {
                stream.Write(bytes, 0, bytes.Length);
            }

            string s = string.Empty;

            using (HttpWebResponse response = (HttpWebResponse)req.GetResponse())
            {
                if (response.ContentEncoding.ToLower().Contains("gzip"))
                {
                    using (GZipStream stream = new GZipStream(response.GetResponseStream(), CompressionMode.Decompress))
                    {
                        using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                        {
                            s = reader.ReadToEnd();
                            result = JsonConvert.DeserializeObject<T>(s);
                        }
                    }
                }
                else if (response.ContentEncoding.ToLower().Contains("deflate"))
                {
                    using (DeflateStream stream = new DeflateStream(response.GetResponseStream(), CompressionMode.Decompress))
                    {
                        using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                        {
                            s = reader.ReadToEnd();
                            result = JsonConvert.DeserializeObject<T>(s);
                        }
                    }
                }
                else
                {
                    using (Stream stream = response.GetResponseStream())
                    {
                        using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
                        {
                            s = reader.ReadToEnd();
                            result = JsonConvert.DeserializeObject<T>(s);
                        }
                    }
                }
            }
            return result;
        }