C# .NET network-programming httpwebrequest

HttpWebRequest.GetResponse() 返回错误 500 内部服务器错误

发布于 2024-11-18 03:41:45 字数 330 浏览 0 评论 0原文

我正在使用 HttpWebRequest 向 url 发出请求：

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(urlAddress);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

但它会抛出错误 500（内部服务器错误），但是当我使用浏览器访问 URLAddress 时，它工作正常，urlAddress= www.khademnews.com

这是一个简单的 GET 操作，但它为我抛出异常我该如何解决这个问题？

原文

I'm using HttpWebRequest to make a request to a url:

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(urlAddress);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

but it throws error 500 (Internal Server Error) but when i visit the URLAddress with browser it works fine, urlAddress= www.khademnews.com

it is a simple GET operation but it throws an exception for me how can I solve this?

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世界等同你 2024-11-25 03:41:45

您可能需要设置用户代理，因为某些站点可能需要它。您还可以使用 WebClient 来简化您的代码：

using (var client = new WebClient())
{
    client.Headers[HttpRequestHeader.UserAgent] = "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0";
    string result = client.DownloadString("http://www.khademnews.com");
}

服务器可能还需要其他标头。您可以使用 FireBug 检查在浏览器中执行请求并添加这些标头时发送了哪些标头。

You might need to set up the user agent as some sites might require it. Also you could use a WebClient to simplify your code:

using (var client = new WebClient())
{
    client.Headers[HttpRequestHeader.UserAgent] = "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0";
    string result = client.DownloadString("http://www.khademnews.com");
}

The server might expect other headers as well. You could check with FireBug which headers are sent went you perform the request in your browser and add those headers.

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