压缩单个asp.net页面

Question

有没有可能压缩一个asp.net 3.5页面？我的站点托管在IIS7上，由于技术原因，我不能在站点范围内启用gzip压缩。IIS7是否可以选择对单个页面进行压缩，或者我是否必须覆盖OnPreRender并编写一些代码来压缩输出？

Answer 1

您可以使用Blowery HttpCompress module。在web.config中，您可以指定要从压缩中排除的文件。

   <httpCompress preferredAlgorithm="gzip" compressionLevel="high">
      <excludedMimeTypes>
        <add type="application/pdf"/>
      </excludedMimeTypes>
      <excludedPaths>
        <add path="/pathToExclude"/>
        <add path="WebResource.axd"/>
        <add path="ScriptResource.axd"/>
      </excludedPaths>
    </httpCompress>

Answer 2

        /// <summary>
    /// Sets up the current page or handler to use GZip through a Response.Filter
    /// IMPORTANT:  
    /// You have to call this method before any output is generated!
    /// </summary>
    public static void GZipEncodePage()
    {
        HttpResponse response = HttpContext.Current.Response;

        if (IsGZipSupported())
        {
            string acceptEncoding = HttpContext.Current.Request.Headers["Accept-Encoding"];
            if (acceptEncoding.Contains("deflate"))
            {
                response.Filter = new System.IO.Compression.DeflateStream(response.Filter,
                                                                          System.IO.Compression.CompressionMode.
                                                                              Compress);
                response.AppendHeader("Content-Encoding", "deflate");
            }
            else
            {
                response.Filter = new System.IO.Compression.GZipStream(response.Filter,
                                                                       System.IO.Compression.CompressionMode.
                                                                           Compress);
                response.AppendHeader("Content-Encoding", "gzip");
            }
        }

        // Allow proxy servers to cache encoded and unencoded versions separately
        response.AppendHeader("Vary", "Content-Encoding");
    }

    /// <summary>
    /// Determines if GZip is supported
    /// </summary>
    /// <returns></returns>
    public static bool IsGZipSupported()
    {
        string acceptEncoding = HttpContext.Current.Request.Headers["Accept-Encoding"];

        if (!string.IsNullOrEmpty(acceptEncoding) &&
            (acceptEncoding.Contains("gzip") || acceptEncoding.Contains("deflate")))
        {
            return true;
        }
        return false;
    }

我在一个名为CompressionUtilities的类中有这段代码。然后在页面中，你想要GZIP (或者在我的例子中，我想要GZIP的所有页面的共享基页)

    protected override void OnPreRender(EventArgs e)
    {

        base.OnPreRender(e);
        CompressionUtilities.GZipEncodePage();
    }

来源：http://www.west-wind.com/weblog/posts/2007/Feb/05/More-on-GZip-compression-with-ASPNET-Content