1 private static FtpWebRequest reqFTP;
 2         #region 连接FTP
 3         private static void Connect(String path)//连接ftp  
 4         {
 5             //FtpCheckDirectoryExist(path);
 6             // 根据uri创建FtpWebRequest对象  
 7             WebRequest req= FtpWebRequest.Create(new Uri(path));
 8             reqFTP = (FtpWebRequest)req;
 9             // 指定数据传输类型  
10             reqFTP.UseBinary = true;
11             // ftp用户名和密码  
12             reqFTP.Credentials = new NetworkCredential(Dic.FtpUserID, Dic.FtpPwd);
13             reqFTP.Proxy = null;
14         }
15         #endregion
16         #region 1.0 使用FtpWebRequest类上传文件
17         /// <summary>
18         /// 使用FtpWebRequest类上传文件
19         /// </summary>
20         /// <param name="ftpurl">"ftp://115.28.80.19/Album/"</param>
21         /// <param name="file">HttpPostedFileBase</param>
22         /// <param name="filename">filename文件名</param>
23         public static string UploadFTPWebRequest(string ftpurl, Stream filestream)
24         {
25             try
26             {
27                 FtpCheckDirectoryExist(ftpurl);
28             }catch(Exception ex)
29             {
30             
31             }
32             Connect(ftpurl);
33             // 默认为true，连接不会被关闭
34             // 在一个命令之后被执行
35             reqFTP.KeepAlive = false;
36             // 指定执行什么命令
37             reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
38             // 指定数据传输类型
39             reqFTP.UseBinary = true;
40             // 上传文件时通知服务器文件的大小
41             reqFTP.ContentLength = filestream.Length;
42             // 缓冲大小设置为2kb
43             int buffLength = 2048;
44             byte[] buff = new byte[buffLength];
45             int contentLen;
46             Stream strm = reqFTP.GetRequestStream();
47             filestream.Position = 0;
48             // 每次读文件流的2kb
49             contentLen = filestream.Read(buff, 0, buffLength);
50             // 流内容没有结束
51             while (contentLen != 0)
52             {
53                 // 把内容从file stream 写入 upload stream
54                 strm.Write(buff, 0, contentLen);
55                 contentLen = filestream.Read(buff, 0, buffLength);
56             }
57             // 关闭两个流
58             strm.Close();
59             filestream.Close();
60             return ftpurl.Replace(Dic.Url_pic,"http://pic.heijxian.com/");
61         }
62         /// <summary>
63         /// 使用FtpWebRequest类上传图片文件
64         /// </summary>
65         /// <param name="ftpurl">"ftp://115.28.80.19/Album/"</param>
66         /// <param name="img">图片</param>
67         /// <param name="filename">文件名</param>
68         public static void UploadFTPWebRequest(string ftpurl, Image img)
69         {
70             using (MemoryStream stream = new MemoryStream())
71             {
72                 img.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
73                 FileHelper.UploadFTPWebRequest(ftpurl, stream);
74             }
75         }
76         #endregion