12FtpWebRequest上传下载

Posted 2020-10-03 清幽火焰

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 }