src/jalview/ftp/FtpClient.java

   1 package jalview.ftp;
   2
   3 import java.io.BufferedOutputStream;
   4 import java.io.File;
   5 import java.io.FileOutputStream;
   6 import java.io.IOException;
   7 import java.io.OutputStream;
   8 import java.net.SocketException;
   9
  10 import org.apache.commons.net.ftp.FTPClient;
  11 import org.apache.commons.net.ftp.FTPFile;
  12
  13 public class FtpClient
  14 {
  15
  16   public static boolean authenticateUser(FTPClient ftpClient,
  17           String username, String password)
  18   {
  19     boolean loggedIn = false;
  20
  21     try
  22     {
  23       loggedIn = ftpClient.login(username, password);
  24     } catch (IOException e)
  25     {
  26       e.printStackTrace();
  27     }
  28     disconectFTP(ftpClient);
  29
  30     return loggedIn;
  31   }
  32
  33   public static FTPClient getFtpClient(String serverHost)
  34   {
  35     FTPClient ftpClient = new FTPClient();
  36     try
  37     {
  38       ftpClient.connect(serverHost);
  39     } catch (SocketException e)
  40     {
  41       e.printStackTrace();
  42     } catch (IOException e)
  43     {
  44       e.printStackTrace();
  45     }
  46     return ftpClient;
  47   }
  48
  49   public static void disconectFTP(FTPClient ftpClient)
  50   {
  51     try
  52     {
  53       if (ftpClient.isConnected())
  54       {
  55         ftpClient.logout();
  56         ftpClient.disconnect();
  57       }
  58     } catch (IOException e)
  59     {
  60       e.printStackTrace();
  61     }
  62   }
  63
  64   public static void listDirectory(FTPClient ftpClient, String parentDir,
  65           String currentDir, int level) throws IOException
  66   {
  67     String dirToList = parentDir;
  68     if (!currentDir.equals(""))
  69     {
  70       dirToList += "/" + currentDir;
  71     }
  72     FTPFile[] subFiles = ftpClient.listFiles(dirToList);
  73     if (subFiles != null && subFiles.length > 0)
  74     {
  75       for (FTPFile aFile : subFiles)
  76       {
  77         String currentFileName = aFile.getName();
  78         if (currentFileName.equals(".") || currentFileName.equals(".."))
  79         {
  80           // skip parent directory and directory itself
  81           continue;
  82         }
  83         for (int i = 0; i < level; i++)
  84         {
  85           System.out.print("\t");
  86         }
  87         if (aFile.isDirectory())
  88         {
  89           System.out.println("[" + currentFileName + "]");
  90           listDirectory(ftpClient, dirToList, currentFileName, level + 1);
  91         }
  92         else
  93         {
  94           System.out.println(currentFileName);
  95         }
  96       }
  97     }
  98   }
  99
 100   public static boolean downloadFile(FTPClient client, String remoteFile,
 101           String local)
 102   {
 103     boolean success = false;
 104     File downloadFile = new File(local);
 105     OutputStream outputStream = null;
 106     try
 107     {
 108       outputStream = new BufferedOutputStream(new FileOutputStream(
 109               downloadFile));
 110
 111       success = client.retrieveFile(remoteFile, outputStream);
 112     } catch (IOException e)
 113     {
 114       e.printStackTrace();
 115     } finally
 116     {
 117       try
 118       {
 119         if (outputStream != null)
 120         {
 121           outputStream.close();
 122         }
 123       } catch (IOException e)
 124       {
 125         e.printStackTrace();
 126       }
 127     }
 128     if (success)
 129     {
 130       System.out.println(remoteFile + " has been downloaded successfully.");
 131     }
 132     return success;
 133   }
 134 }