JAVA实现SFTP实例：

/*
 * Created on 2009-9-14
 * Copyright 2009 by www.xfok.net. All Rights Reserved
 *
 */

package net.xfok.ftp;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Properties;
import java.util.Vector;

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;


/**
 * @author YangHua
 * 转载请注明出处：http://www.xfok.net/2009/10/124485.html
 */
public class MySFTP {
/**
 * 连接sftp服务器
 * @param host 主机
 * @param port 端口
 * @param username 用户名
 * @param password 密码
 * @return
 */
    public ChannelSftp connect( String host, int port, String username,
                    String password )
    {
        ChannelSftp sftp = null;
        try {
            JSch jsch = new JSch();
            jsch.getSession( username, host, port );
            Session sshSession = jsch.getSession( username, host, port );
            System.out.println( "Session created." );
            sshSession.setPassword( password );
            Properties sshConfig = new Properties();
            sshConfig.put( "StrictHostKeyChecking", "no" );
            sshSession.setConfig( sshConfig );
            sshSession.connect();
            System.out.println( "Session connected." );
            System.out.println( "Opening Channel." );
            Channel channel = sshSession.openChannel( "sftp" );
            channel.connect();
            sftp = (ChannelSftp) channel;
            System.out.println( "Connected to " + host + "." );
        } catch ( Exception e ) {
        }
        return(sftp);
    }


/**
 * 上传文件
 * @param directory 上传的目录
 * @param uploadFile 要上传的文件
 * @param sftp
 */
    public void upload( String directory, String uploadFile, ChannelSftp sftp )
    {
        try {
            sftp.cd( directory );
            File file = new File( uploadFile );
            sftp.put( new FileInputStream( file ), file.getName() );
        } catch ( Exception e ) {
            e.printStackTrace();
        }
    }


/**
 * 下载文件
 * @param directory 下载目录
 * @param downloadFile 下载的文件
 * @param saveFile 存在本地的路径
 * @param sftp
 */
    public void download( String directory, String downloadFile, String saveFile, ChannelSftp sftp )
    {
        try {
            sftp.cd( directory );
            File file = new File( saveFile );
            sftp.get( downloadFile, new FileOutputStream( file ) );
        } catch ( Exception e ) {
            e.printStackTrace();
        }
    }


/**
 * 删除文件
 * @param directory 要删除文件所在目录
 * @param deleteFile 要删除的文件
 * @param sftp
 */
    public void delete( String directory, String deleteFile, ChannelSftp sftp )
    {
        try {
            sftp.cd( directory );
            sftp.rm( deleteFile );
        } catch ( Exception e ) {
            e.printStackTrace();
        }
    }


/**
 * 列出目录下的文件
 * @param directory 要列出的目录
 * @param sftp
 * @return
 * @throws SftpException
 */
    public Vector listFiles( String directory, ChannelSftp sftp ) throws SftpException
    {
        return(sftp.ls( directory ) );
    }


    public static void main( String[] args )
    {
        MySFTP      sf      = new MySFTP();
        String      host        = "192.168.0.1";
        int     port        = 22;
        String      username    = "root";
        String      password    = "root";
        String      directory   = "/home/httpd/test/";
        String      uploadFile  = "D:\\tmp\\upload.txt";
        String      downloadFile    = "upload.txt";
        String      saveFile    = "D:\\tmp\\download.txt";
        String      deleteFile  = "delete.txt";
        ChannelSftp sftp        = sf.connect( host, port, username, password );
        sf.upload( directory, uploadFile, sftp );
        sf.download( directory, downloadFile, saveFile, sftp );
        sf.delete( directory, deleteFile, sftp );
        try{
            sftp.cd( directory );
            sftp.mkdir( "ss" );
            System.out.println( "finished" );
        }catch ( Exception e ) {
            e.printStackTrace();
        }
    }
}

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