ftpurlconnection.java

JAVA FTP客户端经典

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package net.sf.jftp.net;

import net.sf.jftp.util.Log;

import java.lang.reflect.*;
import java.io.*;
import java.net.*;
import java.util.*;

/**
 *
 */
public class FtpURLConnection extends URLConnection
{
    private FtpConnection connection = null;
    private String username = "ftp";
    private String password = "[e-mail]";
    private String loginFlag = "";

    public FtpURLConnection(URL u)
    {
        super(u);
        // parse the url for username and password and the remote directory
        connection = new FtpConnection(u.getHost());

        String userInfo = u.getUserInfo();
        if (userInfo != null) {
            int index = userInfo.indexOf(":");
            if (index != -1)
            {
                username = userInfo.substring(0, index);
                password = userInfo.substring(index + 1);
            }
        }
        //System.out.println(u.getPath());
        //System.out.println(u.getPort());
        //System.out.println(u.getUserInfo());
        //System.out.println(u.getAuthority());
	Log.debug("URL: " + u.toString());

    }

    public void connect() throws IOException
    {
        loginFlag = connection.login(username, password);
	if(!loginFlag.equals(FtpConnection.LOGIN_OK))
	{
		return;
	}

	//System.out.println(url.getPath());
	connection.chdir(url.getPath());
    }

    public FtpConnection getFtpConnection()
    {
    	return connection;
    }

    public InputStream getInputStream() throws IOException
    {
        return null;
    }

    public OutputStream getOutputStream() throws IOException
    {
        return null;
    }

    public String getUser()
    {
    	return username;
    }

    public String getPass()
    {
    	return password;
    }

    public String getHost()
    {
    	return url.getHost();
    }

    public int getPort()
    {
    	int ret = url.getPort();
	if(ret <= 0) return 21;
	else return ret;
    }

    public String getLoginResponse()
    {
    	return loginFlag;
    }

    public boolean loginSucceeded()
    {
    	if(loginFlag.equals(FtpConnection.LOGIN_OK))
	{
		return true;
	}

	return false;
    }


    public static void main(String[] args)
    {
       try {
           URLConnection uc = new FtpURLConnection(new URL("ftp://ftp:pass@localhost/pub"));
           uc.connect();
       } catch (IOException ioe) {}
    }
}