之前，呈现给用户的MVC最后一次机会来改变响应 [英] MVC last chance to change response before it is rendered to user

问题描述

我需要改变全HTML响应流（用HTML解析）之前它呈现给用户。
在哪里/当是最后的机会做到这一点？

I need to change full html response stream (with html parsing) before it is rendered to user. Where/When is the last chance to do that?

推荐答案

恕我直言，更好的方法来改变ASP.NET MVC环境HTML的反应是用行动过滤器。
这是COM pressing输出一个动作过滤器的例子：

IMHO, a better way to alter HTML response in ASP.NET MVC environment is to use action filters. This is an example of an action filter for compressing the output:

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);
        }
    }
}

您可以使用像这样的动作方法：

You can use it like this on your action methods:

    [CompressFilter]
    // Minifies, compresses JavaScript files and stores the response in client (browser) cache for a day
    public JavaScriptResult GetJavaScript(string jsPath)

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