我遇到一个问题,当我的Web应用程序中发生服务器错误时,我看到gzip的服务器错误呈现在屏幕上,而不是实际的错误消息。我试图通过在Application_Error上调用GZIP Decompress来解决这个问题。
我无法解压缩HttpContext.Current.Response流,因为它无法读取。也就是说,CanRead是假的,但CanWrite是真的。这让我相信我做的事情完全不正确,所以我也愿意接受建议。
protected void Application_Error(object sender, EventArgs e)
{
if (HttpContext.Current.Error != null)
{
this.GetType().GetLogger().Error(HttpContext.Current.Error);
}
CompressionManager.Decompress();
}
public static void Decompress()
{
//Determine types of compression possible.
string acceptEncoding = HttpContext.Current.Request.Headers["Accept-Encoding"];
if (string.IsNullOrEmpty(acceptEncoding)) return;
//Make sure the stream is actually compressed.
HttpResponse response = HttpContext.Current.Response;
bool compressed = response.Headers.AllKeys.Contains("Content-encoding");
if (!compressed) return;
acceptEncoding = acceptEncoding.ToUpperInvariant();
using ( MemoryStream memStream = new MemoryStream() )
{
byte[] buffer = new byte[1024];
int byteCount;
do
{
byteCount = response.Read(buffer, 0, buffer.Length);
memStream.Write(buffer, 0, byteCount);
} while (byteCount > 0);
// If you're going to be reading from the stream afterwords you're going to want to seek back to the beginning.
memStream.Seek(0, SeekOrigin.Begin);
if (acceptEncoding.Contains("GZIP"))
{
using (GZipStream decompress = new GZipStream(memStream, CompressionMode.Decompress))
{
decompress.CopyTo(response.Filter);
}
}
else if (acceptEncoding.Contains("DEFLATE"))
{
response.Filter = new DeflateStream(response.Filter, CompressionMode.Decompress);
}
response.Headers.Remove("Content-encoding");
}
}
我一直在谷歌搜索一段时间,但没有取得多大进展。据我所知,我应该使用“Request.GetResponseStream()”而不是响应对象,但我认为GetResponseStream需要非静态请求。
对任何事情开放。感谢。
DERP。就这样做:
CompressionManager.Decompress(HttpContext.Current.Error.Message);
public static void Decompress(string errorMsg)
{
HttpContext.Current.Response.Filter = new DeflateStream(new MemoryStream(ASCIIEncoding.Default.GetBytes(errorMsg)), CompressionMode.Compress);
}
答案 0 :(得分:1)
我建议您执行Response.Clear
,然后设置相应的标头,然后发送数据。你不能以这种方式读取响应流是正确的。
可能是您的响应流是由IIS中的设置压缩的,您无法通过代码更改此设置。更新IIS压缩设置,然后重试。