ASP.NET，GZip和.AXD动态文件播放不好

Question

我试图为我正在处理的（asp.netwebforms）网站启用gzip压缩。我认为我有一切工作，但是当我动态加载webresource.axd和scriptresource.axd文件时，它们通过压缩来实现，因此页面无法加载依赖于上述文件的内容或（调试时）无数javascript中断的内容运行时异常，即;无效字符。

这里是我的Global.ascx.cs代码的一部分，显然是连接到PostReleaseRequestState事件。

void OnGlobalPostReleaseRequestState(object sender, EventArgs e) 
{  
     string contentType = Response.ContentType; 

     // Compress only html, style-sheet, and javascript documents. 
     switch (contentType) 
     { 
      case "application/x-javascript": 
      case "text/javascript": 
      case "text/css": 
      case "text/html": 
       { 
        // Get the Accept-Encoding header value to know whether zipping is supported by the browser or not. 
        string acceptEncoding = Request.Headers["Accept-Encoding"]; 
        if (string.IsNullOrEmpty(acceptEncoding)) return; 

        // If gzip is supported then gzip it else if deflate compression is supported then compress in that technique. 
        if (acceptEncoding.Contains("gzip")) 
        { 
         // Compress and set Content-Encoding header for the browser to indicate that the document is zipped. 
         Response.Filter = new GZipStream(Response.Filter, CompressionMode.Compress); 
         Response.AppendHeader("Content-Encoding", "gzip"); 
        } 
        else if (acceptEncoding.Contains("deflate")) 
        { 
         // Compress and set Content-Encoding header for the browser to indicate that the document is zipped. 
         Response.Filter = new DeflateStream(Response.Filter, CompressionMode.Compress); 
         Response.AppendHeader("Content-Encoding", "deflate"); 
        } 
       } 
       break; 
     } 
    } 

和我的web.config与相关部分。

<!-- language-all: lang-xml --> 
<staticContent> 
    <!-- Override IIS default, thus allowing JavaScript compression --> 
    <remove fileExtension=".js" /> 
    <mimeMap fileExtension=".js" mimeType="text/javascript" /> 
</staticContent> 
<httpCompression directory="%SystemDrive%\websites\_compressed" minFileSizeForComp="256"> 
    <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" /> 
    <staticTypes> 
    <add mimeType="text/*" enabled="true" /> 
    <add mimeType="message/*" enabled="true" /> 
    <add mimeType="application/javascript" enabled="true" /> 
    <add mimeType="application/json" enabled="true" /> 
    <add mimeType="*/*" enabled="false" /> 
    </staticTypes> 
    <dynamicTypes> 
    <add mimeType="text/*" enabled="true" /> 
    <add mimeType="message/*" enabled="true" /> 
    <add mimeType="application/x-javascript" enabled="false" /> 
    <add mimeType="*/*" enabled="false" /> 
    </dynamicTypes> 
</httpCompression> 
<urlCompression doStaticCompression="true" doDynamicCompression="true" dynamicCompressionBeforeCache="false" /> 
<httpProtocol> 
    <customHeaders> 
    <add name="Content-Encoding" value="gzip" /> 
    <add name="X-UA-Compatible" value="IE=9" /> 
    </customHeaders> 
</httpProtocol> 

我需要禁用（* .axd）压缩，或强制它在客户端解压缩。请帮助...

Answer 1

好的，所以我想出了我的问题的答案......显然问这个问题是我需要做的，我自己来回答。首先，IE认为缓存动态文件（* .axd）的决心很糟糕，因为我只需要清除IE的缓存（和历史记录），并添加一个简单的对照请求的检查，如下所示。

void OnGlobalPostReleaseRequestState(object sender, EventArgs e) 
{ 
    if (Request.RawUrl.Contains("ScriptResource.axd", StringComparison.OrdinalIgnoreCase)) 
    { 
     return; 
    } 

    string contentType = Response.ContentType; 

    // Compress only html, style-sheet, and javascript documents. 
    switch (contentType) 
    { 
     case "application/x-javascript": 
     case "text/javascript": 
     case "text/css": 
     case "text/html": 
      { 
       // Get the Accept-Encoding header value to know whether zipping is supported by the browser or not. 
       string acceptEncoding = Request.Headers["Accept-Encoding"]; 
       if (string.IsNullOrEmpty(acceptEncoding)) return; 

       // If gzip is supported then gzip it else if deflate compression is supported then compress in that technique. 
       if (acceptEncoding.Contains("gzip")) 
       { 
        // Compress and set Content-Encoding header for the browser to indicate that the document is zipped. 
        Response.Filter = new GZipStream(Response.Filter, CompressionMode.Compress); 
        Response.AppendHeader("Content-Encoding", "gzip"); 
       } 
       else if (acceptEncoding.Contains("deflate")) 
       { 
        // Compress and set Content-Encoding header for the browser to indicate that the document is zipped. 
        Response.Filter = new DeflateStream(Response.Filter, CompressionMode.Compress); 
        Response.AppendHeader("Content-Encoding", "deflate"); 
       } 
      } 
      break; 
    } 
} 

至于详细here - 的ScriptResource.axd会自动压缩，知道了这个我现在可以过滤掉包含scriptresource.axd作为其原始URL的一部分的任何和所有请求。

使用fiddler我能够看到（ScriptResource.axd）文件在它们的头文件中有两个“gzip”的“Content-Encoding”，一个是自动发生的，一个是我正在追加的。

双重压缩==主要头痛！ :)