C# 获取url 状态，获取重定向(HttpWebRequest)

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最新推荐文章于 2023-03-07 09:22:03 发布

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分类专栏： C# 文章标签：重定向 C# web重定向 HttpWebReques

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本文提供了网易云音乐的PC版本及OSX版本的最新下载链接，并通过实例展示了如何使用HttpWebRequest来检查网页的状态码，这对于确保下载链接的有效性至关重要。

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网易云音乐下载

music.163.com/api/pc/download/latest

http://tool.chinaz.com/pagestatus/?url=music.163.com/api/pc/download/latest

pc版本下载 http://tool.chinaz.com/pagestatus/?url=music.163.com%2Fapi%2Fpc%2Fdownload%2Flatest

http://tool.chinaz.com/pagestatus/?url=music.163.com%2Fapi%2Fosx%2Fdownload%2Flatest

HttpStatusCode

Examples

The following example compares the status returned by an HttpWebResponse with a member of theHttpStatusCode class to determine the status of a response.

HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create("http://www.contoso.com");
httpReq.AllowAutoRedirect = false;

HttpWebResponse httpRes = (HttpWebResponse)httpReq.GetResponse();if (httpRes.StatusCode==HttpStatusCode.Moved) 
{
   // Code for moved resources goes here.
}

// Close the response.
httpRes.Close();

 string newUrl = httpRes.Headers["Location"];//获取重定向的网址httpRes.Headers["Location"];//获取重定向的网址

Date: Fri, 12 May 2017 13:14:12 GMT
Server: Apache
Location: http://ss.ishadowx.com/
Content-Length: 207
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=iso-8859-1

Remarks

The HttpStatusCode enumeration contains the values of the status codes defined in RFC 2616 for HTTP 1.1.

The status of an HTTP request is contained in the HttpWebResponse.StatusCode property.

状态码详情 https://docs.microsoft.com/en-us/dotnet/api/system.net.httpstatuscode?view=netcore-2.0

https://msdn.microsoft.com/zh-cn/library/system.net.httpstatuscode.aspx