SFTP文件上传与下载

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;


/**
 * sftp文件上传与下载
 *
 */

public class SFTPUtil {

    /**
     * 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, File file, ChannelSftp sftp) {
        try {
            sftp.cd(directory);
            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) {
        
    
        File file = new File("E:/apache-tomcat-7.0.54/RUNNING.txt");  
        SFTPUtil sf = new SFTPUtil();
        String host = "114.215.119.231";
        int port = 22;
        String username = "root";
        String password = "";
        String directory = "/javawork/zmcc";
        String uploadFile = "E:/apache-tomcat-7.0.54/RUNNING.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();
        }
    }
}