在postman接口调试工具中有结果返回，在后台代码中却没有结果返回，求指点

Question

首先我使用postman测试工具，测试接口，返回结果正常，如下图

然而，我使用c#后台代码去访问这个接口，却不能获取返回值，最终的返回结果却是空字符串，代码如下

            HttpWebRequest request = null;
            HttpWebResponse response = null;
            Stream streamResponse = null;
            try
            {
                request = (HttpWebRequest)WebRequest.Create("http://192.168.2.20:8080/api/v1/auth/login");
                request.Method = "Post";
                request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
                request.KeepAlive = true;
                request.ProtocolVersion = HttpVersion.Version10;

                string jsonContract = "{ \"password\" : \"ZJHzjh800521@1\"}";
                byte[] PostData = Encoding.UTF8.GetBytes(jsonContract);
                //发送数据  using结束代码段释放
                using (Stream requestStm = request.GetRequestStream())
                {
                    requestStm.Write(PostData, 0, PostData.Length);
                }
                ServicePoint currentServicePoint = request.ServicePoint;
                currentServicePoint.ConnectionLimit = 1000;

                //响应
                response = (HttpWebResponse)request.GetResponse();
                streamResponse = response.GetResponseStream();
                string strResponse = string.Empty;
                //如果服务端采用了GZIP压缩,则先解压缩。
                if (response.ContentEncoding.ToLower().Contains("gzip"))
                {
                    using (GZipStream gz = new GZipStream(streamResponse, CompressionMode.Decompress))
                    {
                        using (StreamReader readerGzip = new StreamReader(gz, Encoding.UTF8))
                        {
                            strResponse = readerGzip.ReadToEnd();
                        }
                    }
                }
                else
                {
                    using (StreamReader streamRead = new StreamReader(streamResponse, Encoding.UTF8))
                    {
                        strResponse = streamRead.ReadToEnd();
                    }
                }
                return strResponse;**//这里的值最后还是空的**
            }
            catch (Exception ex)
            {
                var msg = ex.Message;
                return msg;
            }

请教：我的代码是在哪里出问题了呢，或者还有什么地方没有设置好？怎样才能实现像postman的那种效果，成功返回结果

Answer 1

有个很简单的小技巧，postman可以快速提供多种代码生成
使用方法：
第一步：打开代码生成器

第二步：选择需要生成的代码类型