1     /// 
 2     /// 允许压缩 3     /// 
 4     public class AllowCompressAttribute : System.Web.Mvc.ActionFilterAttribute 5     { 6         /// 
 7         /// 压缩方法 8         /// 
 9         public override void OnResultExecuting(ResultExecutingContext filterContext)10         {11             string acceptEncoding = filterContext.HttpContext.Request.Headers["Accept-Encoding"];12             if (String.IsNullOrEmpty(acceptEncoding)) return;13             var response = filterContext.HttpContext.Response;14             acceptEncoding = acceptEncoding.ToUpperInvariant();15             //查看客户端是否支持压缩16             if (acceptEncoding.Contains("GZIP"))17             {18                 response.AppendHeader("Content-Encoding", "gzip");19                 response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);20             }21             else if (acceptEncoding.Contains("DEFLATE"))22             {23                 response.AppendHeader("Content-Encoding", "deflate");24                 response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);25             }26             base.OnResultExecuting(filterContext);27         }28     }