【12】FtpWebRequest上传下载

下载文件

 1 /// <summary>
 2 /// 下载文件
 3 /// </summary>
 4 /// <param name="filename"></param>
 5 private static void DownLoadFile(string filename)
 6 {
 7     FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + "/" + filename);
 8     req.Method = WebRequestMethods.Ftp.DownloadFile;
 9     req.UseBinary = true;
10     req.UsePassive = true;
11     req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
12     try
13     {
14         using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
15         {
16             string localfile = Path.Combine(LocalPath, filename);
17             FileStream fs = new FileStream(localfile, FileMode.Create, FileAccess.Write);
18             int buffer = 1024;  //1K缓冲
19             byte[] b = new byte[buffer];
20             int i = 0;
21             Stream stream = res.GetResponseStream();
22             while ((i = stream.Read(b, 0, buffer)) > 0)
23             {
24                 fs.Write(b, 0, i);
25             }
26         }
27         Console.WriteLine(filename + " download!");
28         Log(filename + "下载成功");
29
30     }
31     catch (Exception ex)
32     {
33         Console.WriteLine(ex.ToString());
34         Log(ex.ToString());
35     }
36     finally
37     {
38
39     }
40 }  

获取文件列表

 1 /// <summary>
 2 /// 获取FTP文件列表
 3 /// </summary>
 4 /// <returns></returns>
 5 private static List<String> GetFileList()
 6 {
 7     List<string> list = new List<string>();
 8     FtpWebRequest req = (FtpWebRequest)WebRequest.Create(new Uri("ftp://" + FtpAddress + FtpRemotePath));
 9     req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
10     req.Method = WebRequestMethods.Ftp.ListDirectory;
11     req.UseBinary = true;
12     req.UsePassive = true;
13     try
14     {
15         using (FtpWebResponse res = (FtpWebResponse)req.GetResponse())
16         {
17             using (StreamReader sr = new StreamReader(res.GetResponseStream()))
18             {
19                 string s;
20                 while ((s = sr.ReadLine()) != null)
21                 {
22
23                     list.Add(s);
24                 }
25             }
26         }
27     }
28     catch (Exception ex)
29     {
30         Console.WriteLine(ex.ToString());
31         Log("下载文件列表失败:");
32         Log(ex.ToString());
33     }
34     return list;
35
36 }  

上传文件

 1 private static void UploadFile(string localFile)
 2 {
 3     FileInfo fi = new FileInfo(localFile);
 4     FileStream fs = fi.OpenRead();
 5     long length = fs.Length;
 6     FtpWebRequest req = (FtpWebRequest)WebRequest.Create("ftp://" + FtpAddress + FtpRemotePath + fi.Name);
 7     req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
 8     req.Method = WebRequestMethods.Ftp.UploadFile;
 9     req.UseBinary = true;
10     req.ContentLength = length;
11     req.Timeout = 10 * 1000;
12     try
13     {
14         Stream stream = req.GetRequestStream();
15
16         int BufferLength = 2048; //2K
17         byte[] b = new byte[BufferLength];
18         int i;
19         while ((i = fs.Read(b, 0, BufferLength)) > 0)
20         {
21             stream.Write(b, 0, i);
22         }
23         stream.Close();
24         stream.Dispose();
25
26     }
27     catch (Exception ex)
28     {
29         Console.WriteLine(ex.ToString());
30     }
31
32 }