c#實現FTP上傳，
1 /// <summary>
2 /// 上傳文件
3 /// </summary>
4 /// <param name="fileinfo">需要上傳的文件</param>
5 /// <param name="targetDir">目標路徑</param>
6 /// <param name="hostname">ftp地址</param>
7 /// <param name="username">ftp用戶名</param>
8 /// <param name="password">ftp密碼</param>
9 public static void UploadFile(FileInfo fileinfo, string targetDir, string hostname, string username, string password)
10 {
11 //1. check target
12 string target;
13 if (targetDir.Trim() == "")
14 {
15 return;
16 }
17 target = Guid.NewGuid().ToString(); //使用臨時文件名
18
19
20 string URI = "FTP://" + hostname + "/" + targetDir + "/" + target;
21 ///WebClient webcl = new WebClient();
22 System.Net.FtpWebRequest ftp = GetRequest(URI, username, password);
23
24 //設置FTP命令 設置所要執行的FTP命令，
25 //ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails;//假設此處為顯示指定路徑下的文件列表
26 ftp.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
27 //指定文件傳輸的數據類型
28 ftp.UseBinary = true;
29 ftp.UsePassive = true;
30
31 //告訴ftp文件大小
32 ftp.ContentLength = fileinfo.Length;
33 //緩沖大小設置為2KB
34 const int BufferSize = 2048;
35 byte[] content = new byte[BufferSize - 1 + 1];
36 int dataRead;
37
38 //打開一個文件流 (System.IO.FileStream) 去讀上傳的文件
39 using (FileStream fs = fileinfo.OpenRead())
40 {
41 try
42 {
43 //把上傳的文件寫入流
44 using (Stream rs = ftp.GetRequestStream())
45 {
46 do
47 {
48 //每次讀文件流的2KB
49 dataRead = fs.Read(content, 0, BufferSize);
50 rs.Write(content, 0, dataRead);
51 } while (!(dataRead < BufferSize));
52 rs.Close();
53 }
54
55 }
56 catch (Exception ex) { }
57 finally
58 {
59 fs.Close();
60 }
61
62 }
63
64 ftp = null;
65 //設置FTP命令
66 ftp = GetRequest(URI, username, password);
67 ftp.Method = System.Net.WebRequestMethods.Ftp.Rename; //改名
68 ftp.RenameTo = fileinfo.Name;
69 try
70 {
71 ftp.GetResponse();
72 }
73 catch (Exception ex)
74 {
75 ftp = GetRequest(URI, username, password);
76 ftp.Method = System.Net.WebRequestMethods.Ftp.DeleteFile; //刪除
77 ftp.GetResponse();
78 throw ex;
79 }
80 finally
81 {
82 //fileinfo.Delete();
83 }
84
85 // 可以記錄一個日志 "上傳" + fileinfo.FullName + "上傳到" + "FTP://" + hostname + "/" + targetDir + "/" + fileinfo.Name + "成功." );
86 ftp = null;
87
88 #region
89 /*****
90 *FtpWebResponse
91 * ****/
92 //FtpWebResponse ftpWebResponse = (FtpWebResponse)ftp.GetResponse();
93 #endregion
94 }
95
96 private static FtpWebRequest GetRequest(string URI, string username, string password)
97 {
98 //根據服務器信息FtpWebRequest創建類的對象
99 FtpWebRequest result = (FtpWebRequest)FtpWebRequest.Create(URI);
100 //提供身份驗證信息
101 result.Credentials = new System.Net.NetworkCredential(username, password);
102 //設置請求完成之後是否保持到FTP服務器的控制連接，默認值為true
103 result.KeepAlive = false;
104 return result;
105 }
