Response.AddHeader实现下载_解决下载界面中文文件名乱码问题 

 1         //filePath：完整的文件路径 
 2         //fileName：文件名
 3         private void DownFile(string filePath, string fileName)
 4         {
 5             FileInfo fileInfo = new FileInfo(filePath);
 6             string fileExt = fileInfo.Extension.Trim().ToLower();
 7             HttpContext.Current.Response.Clear();
 8             HttpContext.Current.Response.ClearContent();
 9             HttpContext.Current.Response.ClearHeaders();
10 
11             //显示在下面窗口的中文文件名
12 
13             // HttpUtility.HtmlEncode ： 将字符串转换为 HTML 编码的字符串。
14             HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName));
15             HttpContext.Current.Response.AddHeader("Content-Length", fileInfo.Length.ToString());
16             HttpContext.Current.Response.AddHeader("Content-Transfer-Encoding", "binary");
17             HttpContext.Current.Response.ContentType = checktype(HttpUtility.UrlEncodeUnicode(fileExt));//"application/octet-stream";
18             HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
19             HttpContext.Current.Response.WriteFile(fileInfo.FullName);
20             HttpContext.Current.Response.Flush();
21             HttpContext.Current.Response.End();
22         }
23 
24 
25 
26 
27 
28         public string checktype(string fileExt)
29         {
30             string ContentType;
31             switch (fileExt)
32             {
33                 case ".asf":
34                     ContentType = "video/x-ms-asf"; break;
35                 case ".avi":
36                     ContentType = "video/avi"; break;
37                 case ".doc":
38                     ContentType = "application/msword"; break;
39                 case ".zip":
40                     ContentType = "application/zip"; break;
41                 case ".rar":
42                     ContentType = "application/x-zip-compressed"; break;
43                 case ".xls":
44                     ContentType = "application/vnd.ms-excel"; break;
45                 case ".gif":
46                     ContentType = "image/gif"; break;
47                 case ".jpg":
48                     ContentType = "image/jpeg"; break;
49                 case "jpeg":
50                     ContentType = "image/jpeg"; break;
51                 case ".wav":
52                     ContentType = "audio/wav"; break;
53                 case ".mp3":
54                     ContentType = "audio/mpeg3"; break;
55                 case ".mpg":
56                     ContentType = "video/mpeg"; break;
57                 case ".mepg":
58                     ContentType = "video/mpeg"; break;
59                 case ".rtf":
60                     ContentType = "application/rtf"; break;
61                 case ".html":
62                     ContentType = "text/html"; break;
63                 case ".htm":
64                     ContentType = "text/html"; break;
65                 case ".txt":
66                     ContentType = "text/plain"; break;
67                 default:
68                     ContentType = "application/octet-stream";
69                     break;
70             }
71             return ContentType;
72         }

 

posted @ 2016-02-29 12:39  Fank5225  阅读(2031)  评论(0)    收藏  举报