解压缩来自WebClient的gzip响应

Question

有没有一种快速方法来解压缩使用WebClient.DownloadString()方法下载的gzip响应？您对如何使用WebClient处理gzip响应有任何建议吗？

Answer 1

要做到这一点,最简单的方法是使用内置的自动减压与HttpWebRequest类.

var request = (HttpWebRequest)HttpWebRequest.Create("http://stackoverflow.com");
request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

要做到这一点,WebClient你必须使自己的类派生WebClient并覆盖该GetWebRequest()方法.

public class GZipWebClient : WebClient
{
    protected override WebRequest GetWebRequest(Uri address)
    {
        HttpWebRequest request = (HttpWebRequest)base.GetWebRequest(address);
        request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
        return request;
    }
}

另请参阅此SO线程:.NET的HttpWebResponse是否会自动解压缩GZiped和Deflated响应？