错误500:SRVE0295E:报告错误:500-HttpWebResponse [英] Error 500: SRVE0295E: Error reported: 500 - HttpWebResponse

问题描述

我的任务是从IBM服务器下载附件. 问题是，当我使用C#-HttpWebRequest和HttpWebResponse进行请求时，总是得到状态码500和响应正文错误500:SRVE0295E:错误报告:500".但是，当我使用邮递员"执行相同的请求时，没有错误，并且文件已下载. 请注意以下事实，即需要一个代表当前会话的cookie.我向邮递员和我的请求添加了相同的cookie(可重复使用cookie).

my task is to download an attachment from an IBM server. The problem is that when I do the request with C# - HttpWebRequest and HttpWebResponse, I always get the status code 500 and the response body "Error 500: SRVE0295E: Error reported: 500". But!, when I do the same request with "Postman" there is no error and the file is downloaded. Please pay attention to the fact, that a cookie, which represents the current session, is needed. I added the same cookie (cookie can be reused) to Postman and to my request.

这是Postman的Http原始请求(我会发布一个屏幕截图，但缺乏信誉点):

Here is the Http raw request of Postman (I would have posted a screen shot but am lacking reputation points):

https://eforms. ebase.dlh.de:443/forms/secure/org/run/service/ContentStorageService44084

https://eforms.ebase.dlh.de:443/forms/secure/org/run/service/ContentStorageService44084

获取/forms/secure/org/run/service/ContentStorageService44084 HTTP/1.1 主机:eforms.ebase.dlh.de:443 Cookie:IPCZQX03e54bbd1d = 090038003914048a6f27dcb2bc9b9e0c3a6c63b0;路径=/; domain = dlh.de

GET /forms/secure/org/run/service/ContentStorageService44084 HTTP/1.1 Host: eforms.ebase.dlh.de:443 Cookie: IPCZQX03e54bbd1d=090038003914048a6f27dcb2bc9b9e0c3a6c63b0; path=/; domain=dlh.de

邮递员工作(这实际上是一个非常简单的GET请求，只有两个标头).

Postman works (it's really a very simple GET request with only two headers).

这是C#代码(向我返回错误500:SRVE0295E:报告错误:500")

And here is the C# code (which returns me the "Error 500: SRVE0295E: Error reported: 500")

                HttpWebRequest req = null;
                HttpWebResponse res = null;

                req= (HttpWebRequest)WebRequest.Create("https://eforms.ebase.dlh.de:443/forms/secure/org/run/service/ContentStorageService44084");

                req.Headers.Add("Cookie", "IPCZQX03e54bbd1d=090038003914048a6f27dcb2bc9b9e0c3a6c63b0; path=/; domain=dlh.de");
                req.Host = "eforms.ebase.dlh.de";
                req.Method = "GET";

                try
                {
                    res = (HttpWebResponse)req.GetResponse();
                }
                catch (WebException ex)
                {
                    res = (HttpWebResponse) ex.Response;
                }

                Stream receiveStream = res.GetResponseStream();
                StreamReader sr = new StreamReader (receiveStream, Encoding.UTF8); 

                string responseBody = sr.ReadToEnd(); 

                Console.WriteLine((int)res.StatusCode + "\t" + res.StatusCode.ToString());
                Console.WriteLine(responseBody);

任何提示都会非常感人.

Any hints will be very much apreciated.

PS:cookie可以，没有有效的cookie，我什至不会收到错误500:SRVE0295E:错误报告:500".因此错误消息来自IBM服务器，我可以肯定地说.

PS: the cookie is OK, without valid cookie I wouldn't even get the "Error 500: SRVE0295E: Error reported: 500". So the error message is from the IBM server, this I can tell for sure.

谢谢.

约翰·科瓦连科

推荐答案

好的，我找到了解决方案.我不得不假装自己是一个著名的浏览器. 因此，通过添加

OK, I found the solution. I had to pretend that I am a well-known browser. So by adding

req.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)";                                  

服务器将文件退还给我.

the server returned me the file.

这篇关于错误500:SRVE0295E:报告错误:500-HttpWebResponse的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！