Gzip 压缩不起作用 ASP.net MVC5 [英] Gzip compression not working ASP.net MVC5

问题描述

我想用 Gzip 压缩我的网络应用程序，我正在使用以下类

I want to compress my web application with Gzip and I am using following class

压缩过滤器

public class CompressFilter : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        HttpRequestBase request = filterContext.HttpContext.Request;
        string acceptEncoding = request.Headers["Accept-Encoding"];
        if (string.IsNullOrEmpty(acceptEncoding)) return;
        acceptEncoding = acceptEncoding.ToUpperInvariant();
        HttpResponseBase response = filterContext.HttpContext.Response;
        if (acceptEncoding.Contains("GZIP"))
        {
            response.AppendHeader("Content-encoding", "gzip");
            response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
        }
        else if (acceptEncoding.Contains("DEFLATE"))
        {
            response.AppendHeader("Content-encoding", "deflate");
            response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
        }
    }
}

缓存过滤器

public class CacheFilterAttribute : ActionFilterAttribute
{
    public int Duration
    {
        get;
        set;
    }

    public CacheFilterAttribute()
    {
        Duration = 1;
    }

    public override void OnActionExecuted(ActionExecutedContext filterContext)
    {
        if (Duration <= 0) return;

        HttpCachePolicyBase cache = filterContext.HttpContext.Response.Cache;
        TimeSpan cacheDuration = TimeSpan.FromMinutes(Duration);

        cache.SetCacheability(HttpCacheability.Public);
        cache.SetExpires(DateTime.Now.Add(cacheDuration));
        cache.SetMaxAge(cacheDuration);
        cache.AppendCacheExtension("must-revalidate, proxy-revalidate");
    }
}

控制器

[CompressFilter]
[CacheFilter(Duration = 60)]
public ActionResult Index()
{}

并将此类应用于控制器中的 Action.但在萤火虫中它仍然显示 "Transfer-Encoding: chunked" ，但它应该是 "Transfer-Encoding: gzip".

and applying this class to Action in Controller. But in firebug it's still showing "Transfer-Encoding: chunked" , but it should be "Transfer-Encoding: gzip".

我正在本地主机上测试它.

请告诉我我做错了什么?谢谢并恭祝安康.

Please tell me what am I doing wrong? Thanks and Regards.

更新缓存过滤器工作正常，但仍然没有gzip压缩，下面是chrome中的响应头.

update cache filter is working fine, but still no gzip compression, below is response header in chrome.

Cache-Control:public, must-revalidate, proxy-revalidate, max-age=3600
Content-Type:text/html; charset=utf-8
Date:Wed, 22 Jul 2015 13:39:06 GMT
Expires:Wed, 22 Jul 2015 14:39:04 GMT
Server:Microsoft-IIS/10.0
Transfer-Encoding:chunked
X-AspNet-Version:4.0.30319
X-AspNetMvc-Version:5.1
X-Powered-By:ASP.NET
X-SourceFiles:=?UTF-8?B?QzpcVXNlcnNcQXJiYXpcRG9jdW1lbnRzXFZpc3VhbCBTdHVkaW8gMjAxM1xQcm9qZWN0c1xidXlwcmljZXNwYWtpc3RhblxCdXlQaG9uZQ==?=

有什么办法可以让我完成这项工作，我真的需要帮助，谢谢

Is there any way I can make this work, I really need help guys, Thanks

推荐答案

如果您无法控制 IIS，只需将其添加到您的 Global.ASCX.在 Android、iPhone 和大多数 PC 浏览器上进行了测试.

If you can't control IIS, just add this to your Global.ASCX. tested on Android, iPhone, and most PC browsers.

 protected void Application_BeginRequest(object sender, EventArgs e)
    {

        // Implement HTTP compression
        HttpApplication app = (HttpApplication)sender;


        // Retrieve accepted encodings
        string encodings = app.Request.Headers.Get("Accept-Encoding");
        if (encodings != null)
        {
            // Check the browser accepts deflate or gzip (deflate takes preference)
            encodings = encodings.ToLower();
            if (encodings.Contains("deflate"))
            {
                app.Response.Filter = new DeflateStream(app.Response.Filter, CompressionMode.Compress);
                app.Response.AppendHeader("Content-Encoding", "deflate");
            }
            else if (encodings.Contains("gzip"))
            {
                app.Response.Filter = new GZipStream(app.Response.Filter, CompressionMode.Compress);
                app.Response.AppendHeader("Content-Encoding", "gzip");
            }
        }
    }

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