HttpWebRequest request = null;            Stream webStream = null;            HttpWebResponse response = null;            StreamReader reader = null;            string responseString = "";            try            {                byte[] bf = Encoding.UTF8.GetBytes(postString);                request = WebRequest.Create(url) as HttpWebRequest;                request.Method = "POST";                request.ServicePoint.Expect100Continue = false;                request.Timeout = 1000 * 3;                request.ContentType = "application/x-www-form-urlencoded";                request.KeepAlive = false;                request.ProtocolVersion = HttpVersion.Version11;                  request.ContentLength = bf.Length;                webStream = request.GetRequestStream();                webStream.Write(bf, 0, bf.Length);                response = (HttpWebResponse)request.GetResponse();                reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);                responseString = reader.ReadToEnd();                Log.Info(responseString);            }            catch (Exception ex)            {                throw ex;            }            finally            {                request.Abort();                request = null;                if (webStream != null)                {                    webStream.Close();                }                if (reader != null)                {                    reader.Close();                }                if (response != null)                {                    response.Close();                    response = null;                }            }                        //解析            JavaScriptSerializer jsonConvert = new JavaScriptSerializer();            dynamic responseObj = jsonConvert.DeserializeObject(responseString);            if (responseObj is Dictionary<string, object>)            {                Dictionary<string, object> jsonobj = (Dictionary<string, object>)responseObj;                message.ResponseMessage = string.Format("[{0}]"+jsonobj["ResultDesc"].ToString(),DateTime.Now.ToString());            }