mvc 文件压缩 减少文件大小

 1 using System;
 2 using System.Collections.Generic;
 3 using System.IO.Compression;
 4 using System.Linq;
 5 using System.Web;
 6 using System.Web.Mvc;
 7 
 8 namespace PaiXie.Pos.Admin {
 9     /// <summary>
10     /// 文件压缩 
11     /// </summary>
12     public class CompressFilter : ActionFilterAttribute {
13         public override void OnActionExecuting(ActionExecutingContext filterContext) {
14             HttpRequestBase request = filterContext.HttpContext.Request;
15 
16             string acceptEncoding = request.Headers["Accept-Encoding"];
17 
18             if (string.IsNullOrEmpty(acceptEncoding)) return;
19 
20             acceptEncoding = acceptEncoding.ToUpperInvariant();
21 
22             HttpResponseBase response = filterContext.HttpContext.Response;
23 
24             if (acceptEncoding.Contains("GZIP")) {
25                 response.AppendHeader("Content-encoding", "gzip");
26                 response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);
27             }
28             else if (acceptEncoding.Contains("DEFLATE")) {
29                 response.AppendHeader("Content-encoding", "deflate");
30                 response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);
31             }
32         }
33     }
34 }