1 // FTP 下载
2 private int FtpFileDownload(string savePath, string fileName, string ftpServerIP, string ftpUserID, string ftpPassword)
3 {
4
5 string ftpServerPath = "ftp://" + ftpServerIP + ":23" + fileName; //":23"指定的端口，不填默认端口为21
6 string ftpUser = ftpUserID;
7 string ftpPwd = ftpPassword;
8 string saveFilePath = savePath;
9
10 FileStream outputStream = null;
11 FtpWebResponse response = null;
12 FtpWebRequest reqFTP;
13
14 try
15 {
16 outputStream = new FileStream(saveFilePath, FileMode.Create);
17
18 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpServerPath));
19 reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
20 reqFTP.UseBinary = true;
21 reqFTP.KeepAlive = false;
22 reqFTP.Timeout = 3000;
23 reqFTP.Credentials = new NetworkCredential(ftpUser, ftpPwd);
24 response = (FtpWebResponse)reqFTP.GetResponse();
25 Stream ftpStream = response.GetResponseStream();
26 int bufferSize = 2048;
27 int readCount;
28 ftpFileReadSize = 0;
29 byte[] buffer = new byte[bufferSize];
30
31 readCount = ftpStream.Read(buffer, 0, bufferSize);
32 while (readCount > 0)
33 {
34 ftpFileReadSize += readCount;
35 outputStream.Write(buffer, 0, readCount);
36 readCount = ftpStream.Read(buffer, 0, bufferSize);
37 }
38
39 ftpStream.Close();
40 outputStream.Close();
41 response.Close();
42 }
43 catch (Exception ex)
44 {
45 Trace.WriteLine("FtpClient异常：" + ex.Message);
46 if (outputStream != null)
47 {
48 outputStream.Close();
49 }
50 if (response != null)
51 {
52 response.Close();
53 }
54
55 return -1;
56 }
57
58 return 0;
59 }
60
61 // 获取FTP文件大小
62 private long GetFtpFileSize(string fileName, string ftpServerIP, string ftpUserID, string ftpPassword)
63 {
64 long fileSize = 0;
65 string ftpServerPath = "ftp://" + ftpServerIP + ":23" + fileName;
66 string ftpUser = ftpUserID;
67 string ftpPwd = ftpPassword;
68
69 FtpWebResponse response = null;
70 FtpWebRequest reqFTP;
71
72 try
73 {
74 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpServerPath));
75 reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
76 reqFTP.UseBinary = true;
77 reqFTP.KeepAlive = false;
78 reqFTP.Timeout = 3000;
79 reqFTP.Credentials = new NetworkCredential(ftpUser, ftpPwd);
80 reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;//要求返回文件大小属性
81 response = (FtpWebResponse)reqFTP.GetResponse();
82 fileSize = response.ContentLength;
83 response.Close();
84 }
85 catch (Exception ex)
86 {
87 Trace.WriteLine("FtpClient异常：" + ex.Message);
88 if (response != null)
89 {
90 response.Close();
91 }
92
93 return -1;
94 }
95
96 return fileSize;
97 }
98
更多内容请访问 www.uusystem.com