.NET的HttpWebResponse会自动解压缩GZiped和Deflated响应吗?

时间:2009-03-24 18:05:55

标签: c# .net httpwebrequest gzip deflate

我正在尝试接受压缩响应的请求

var request = (HttpWebRequest)HttpWebRequest.Create(requestUri);
request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");

我想知道当我添加第二行时,我将不得不手动处理解压缩。

4 个答案:

答案 0 :(得分:109)

我找到了答案。

您可以将代码更改为:

var request = (HttpWebRequest)HttpWebRequest.Create(requestUri);
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

你将有自动减压。无需更改其余代码。

答案 1 :(得分:3)

对于.NET Core,事情要多一些。需要GZipStream,因为AutomaticCompression没有属性(截至写作时)请考虑以下GET示例:

var req = WebRequest.CreateHttp(uri);

/*
 * Headers
 */
req.Headers[HttpRequestHeader.AcceptEncoding] = "gzip, deflate";

/*
 * Execute
 */
try
{
    using (var resp = await req.GetResponseAsync())
    {
        using (var str = resp.GetResponseStream())
        using (var gsr = new GZipStream(str, CompressionMode.Decompress))
        using (var sr = new StreamReader(gsr))

        {
            string s = await sr.ReadToEndAsync();  
        }
    }
}
catch (WebException ex)
{
    using (HttpWebResponse response = (HttpWebResponse)ex.Response)
    {
        using (StreamReader sr = new StreamReader(response.GetResponseStream()))
        {
            string respStr = sr.ReadToEnd();
            int statusCode = (int)response.StatusCode;

            string errorMsh = $"Request ({url}) failed ({statusCode}) on, with error: {respStr}";
        }
    }
}

答案 2 :(得分:-1)

不会自动处理GZIP和Deflate响应。有关详细信息,请参阅此文章:HttpWebRequest and GZip Http Responses

答案 3 :(得分:-2)

我认为你必须自己解压缩流。这是一篇关于如何做到这一点的文章:

  

http://www.west-wind.com/WebLog/posts/102969.aspx