在使用“FilterExecutingContext”时出现错误，如何使用ActionFilterAttribute类的

本文关键字：错误 何使用 类的 ActionFilterAttribute FilterExecutingContext | 更新日期: 2023-09-27 18:11:18

我想在我的项目中使用下面的代码实现HTML压缩。

public class CompressFilter : ActionFilterAttribute {
public override void OnActionExecuting(FilterExecutingContext 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);
    }
}
}

但是，我在FilterExecutingContext上得到了一个错误。它显示了像code not found...一样的错误所以请给我建议我应该如何在我的项目中实现HTML压缩。还有什么建议请告诉我。

谢谢。

在使用“FilterExecutingContext”时出现错误，如何使用ActionFilterAttribute类的

将OnActionExecuting的方法签名修改为:

public override void OnActionExecuting(ActionExecutingContext filterContext)

用ActionExecutingContext代替FilterExecutingContext

查看MSDN。

添加Accept编码验证。

的大小写不正确

Accept-encoding, GZIP and DEFLATE

。示例代码如下:

 if(Request.Headers["Accept-encoding"] != null &&
     Request.Headers["Accept-encoding"].Contains("gzip")) {
       Response.Filter = new GZipStream(Response.Filter, 
                         CompressionMode.Compress, true);
       Response.AppendHeader("Content-encoding", "gzip");
  }
  else if(Request.Headers["Accept-encoding"] != null &&
          Request.Headers["Accept-encoding"].Contains("deflate")) {
      Response.Filter = new DeflateStream(Response.Filter, 
                        CompressionMode.Compress, true);
      Response.AppendHeader("Content-encoding", "deflate");
  }

Courtsy http://www.codeproject.com/Articles/14761/HTTP-Compression-A-Quick-and-Dirty-Solution

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