HttpModule不攔截IIS 5.1中的js和css文件

我正在實現HttpModule來壓縮請求。下面是HTTP模塊的codee：HttpModule不攔截IIS 5.1中的js和css文件

public class Global : IHttpModule 
{ 
public void Init(HttpApplication app) 
{ 
    app.PostReleaseRequestState += new EventHandler(app_PostReleaseRequestState); 
} 
void app_PostReleaseRequestState(object sender, EventArgs e) 
{ 
    HttpApplication app = (HttpApplication)sender; 
    HttpContext context = app.Context; 
    string acceptEncoding = context.Request.Headers["Accept-Encoding"]; 




     // 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. 
      context.Response.Filter = new GZipStream(context.Response.Filter, CompressionMode.Compress); 
      context.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. 
      context.Response.Filter = new DeflateStream(context.Response.Filter, CompressionMode.Compress); 
      context.Response.AppendHeader("Content-Encoding", "deflate"); 
     } 


}

它能夠攔截和壓縮JS和CSS在開發Web服務器，但是當我從IIS 5.1 運行它，它是不能夠壓縮JS和CSS文件。請幫忙。

來源

2011-02-14 Niraj Choubey