c# 后台post josn数据

 public static void PostJsonData(Nss nss)
        {
            try
            {
                string url = Api;
                string postData = JsonConvert.SerializeObject(nss);  //System.Runtime 序列化
                byte[] data = Encoding.UTF8.GetBytes(postData);
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "POST";
                request.ContentType = "application/json";
                request.ContentLength = data.Length;
                Stream newStream = request.GetRequestStream();
                newStream.Write(data, 0, data.Length);
                newStream.Close();
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                string content = reader.ReadToEnd();
                reader.Close();
                LogHelper.Info("Post成功：" + nss.ReceptNumber);
            }
            catch(Exception ex)
            {
                LogHelper.Error("调用接口出错:"+nss.ReceptNumber,ex);
            }
        }