ASP.NET MVC5 使用ActionFilter过滤器属性压缩无法在过滤器内部获取网页内容

ASP.NET MVC5 使用ActionFilter过滤器属性压缩内容，却无法在过滤器内部获取网页内容，网上很多文章说的都是ASP.NET MVC3的，都试过不行，最终发现filterContext.HttpContext.Response.Filter属性只能写，不能读，所以压缩无效

  public class CompressContent : ActionFilterAttribute
    {
        public override void OnResultExecuted(ResultExecutedContext filterContext)
        {

            base.OnResultExecuted(filterContext);  
            var acceptEncoding = filterContext.HttpContext.Request.Headers["Accept-Encoding"];
            if (!string.IsNullOrEmpty(acceptEncoding))
            {

                string[] acceptEncodings = acceptEncoding.ToLower().Split(',');
                var response = filterContext.HttpContext.Response;
                if (acceptEncodings.Contains("gzip"))
                {
                    response.AppendHeader("Content-encoding", "gzip");
                    response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);

                }
                else if (acceptEncodings.Contains("deflate"))
                {
                    response.AppendHeader("Content-encoding", "deflate");
                    response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
                }
            }

        }




    }

下面几个方法我也都试过，不行

        public virtual void OnActionExecuted(ActionExecutedContext filterContext);


        public virtual void OnActionExecuting(ActionExecutingContext filterContext);


        public virtual void OnResultExecuted(ResultExecutedContext filterContext);


        public virtual void OnResultExecuting(ResultExecutingContext filterContext);

求大神解决。

filterContext.HttpContext.Response.Filter 属性为什么无法读取呢？该怎么在ActionFilter里获取内面内容？

唉，还是没人帮我解决