c#实现FTP上传
1 ///2 /// 上传文件
3 ///
4 /// 需要上传的文件
5 /// 目标路径
6 /// ftp地址
7 /// ftp用户名
8 /// ftp密码
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();//使用临时文件名
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 //设置FTP命令 设置所要执行的FTP命令，
25 //ftp.Method = System.Net.WebRequestMethods.Ftp.ListDirectoryDetails;//假设此处为显示指定路径下的文件列表
26 ftp.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
27 //指定文件传输的数据类型
28 ftp.UseBinary = true;
29 ftp.UsePassive = true;
30
31 //告诉ftp文件大小
32 ftp.ContentLength = fileinfo.Length;
33 //缓冲大小设置为2KB
34 const int BufferSize = 2048;
35 byte[] content = new byte;
36 int dataRead;
37
38 //打开一个文件流 (System.IO.FileStream) 去读上传的文件
39 using (FileStream fs = fileinfo.OpenRead())
40 {
41 try
42 {
43 //把上传的文件写入流
44 using (Stream rs = ftp.GetRequestStream())
45 {
46 do
47 {
48 //每次读文件流的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 //设置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; //删除
77 ftp.GetResponse();
78 throw ex;
79 }
80 finally
81 {
82 //fileinfo.Delete();
83 }
84
85 // 可以记录一个日志"上传" + fileinfo.FullName + "上传到" + "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 //根据服务器信息FtpWebRequest创建类的对象
99 FtpWebRequest result = (FtpWebRequest)FtpWebRequest.Create(URI);
100 //提供身份验证信息
101 result.Credentials = new System.Net.NetworkCredential(username, password);
102 //设置请求完成之后是否保持到FTP服务器的控制连接，默认值为true
103 result.KeepAlive = false;
104 return result;
105 }
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