1 /// <summary>
2 /// 允许压缩
3 /// </summary>
4 public class AllowCompressAttribute : System.Web.Mvc.ActionFilterAttribute
5 {
6 /// <summary>
7 /// 压缩方法
8 /// </summary>
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 }
