簡單FTP程序

import java.io.*;

import java.util.*;

import java.net.*;

import sun.net.ftp.FtpClient;

import sun.net.TelnetOutputStream;

 

public class TestFTP {

 private String host = "somename";

 private String userID = "user";

 private String password = "password";

 private String directory = "filesdir";

 private String fileName = "somefile.doc";

 public static void main(String[] args) {

   try {

     FtpClient ftpClient = new FtpClient();

     ftpClient.openServer(host); // connect to FTP server

     ftpClient.login(userID, password); // login

     ftpClient.binary(); // set to binary mode transfer

     ftpClient.cd(directory); // change directory

     File file = new File(fileName);

     TelnetOutputStream out = ftpClient.put(file.getName());

     FileInputStream in = new FileInputStream(file);

     int c = 0;

     while ((c = in.read()) != -1 ) {

       out.write(c);

     }

     in.close();

     out.close();

     ftpClient.closeServer();

   } catch (Exception exception) {

     exception.printStackTrace();

   }

 }

 

}

 

sun.net.ftp.FtpClient client = new sun.net.ftp.FtpClient();

 client.openServer("host");

 client.login("user", "pass");

 client.binary();

 client.cd("dir");

 String fileName = "file.dat";

 File file = new File(fileName);

 java.io.InputStream in = client.get(fileName);

 java.io.OutputStream out = new FileOutputStream(file);

 int r = 0;

 while ((r = in.read()) != -1 ) {

     out.write(r);

 }

 in.close();

 out.close();

 client.closeServer();