SFTP登录上传下载

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jsch-0.1.51.jar下载地址：http://download.youkuaiyun.com/detail/daohaode123/8412375

package com.zjl;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import java.util.Vector;

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

/**
 * @author zjl
 *
 */
public class SFTPUtil {
	
	/**
	 * @param host 主机IP
	 * @param port 主机端口号
	 * @param username 登录名
	 * @param password 登录密码
	 * 
	 * @return sftp
	 */
	public ChannelSftp connect(String host, int port, String username, String password){
		ChannelSftp sftp = null;
		try {
			JSch jsch = new JSch();
			Session session = jsch.getSession(username, host, port);
			session.setPassword(password);
			Properties properties = new Properties();
			properties.put("StrictHostKeyChecking", "no");
			session.setConfig(properties);
			session.connect();
			Channel channel = session.openChannel("sftp");
			channel.connect();
			sftp = (ChannelSftp) channel;
		} catch (JSchException e) {
			e.printStackTrace();
		}
		return sftp;
	}
	
	/**
	 * 列出目录下的文件
	 * @param directory 目录
	 * @param sftp 
	 * 
	 * @return fileNameList 文件名列表
	 * @throws Exception 
	 */
	public List<String> listFiles(String directory, ChannelSftp sftp) throws Exception{
		Vector fileList;
		List<String> fileNameList = new ArrayList<String>();
		
		fileList = sftp.ls(directory);
		Iterator it = fileList.iterator();
		
		while(it.hasNext()){
			String fileName = ((LsEntry)it.next()).getFilename();
			if(".".equals(fileName) || "..".equals(fileName)){
				continue;
			}
			fileNameList.add(fileName);
		}
		return fileNameList;
	}
	/**
	 * 删除文件
	 * @param directory 目录
	 * @param deleteFile  删除的文件
	 *
	 */
	public void delete(String dieectory, String deleteFile, ChannelSftp sftp){
		try {
			sftp.cd(dieectory);
			sftp.rm(deleteFile);
		} catch (SftpException e) {
			e.printStackTrace();
		}
	}
	/**
	 * 下载目录下的全部文件
	 * @param directory 目录
	 * @param saveDirectory  存在本地的路径
	 * @param sftp
	 * @throws Exception 
	 *
	 */
	public void downloadDirectory(String directory, String saveDirectory, ChannelSftp sftp) throws Exception{
		String downloadFile = "";
		List<String> downloadFileList;
		downloadFileList = listFiles(directory,sftp);
		Iterator<String> it = downloadFileList.iterator();
		while(it.hasNext()){
			downloadFile = it.next().toString();
			if(downloadFile.toString().indexOf(".") < 0){
				continue;
			}
			download(directory,downloadFile,saveDirectory,sftp);
		}
	}
	/**
	 * 下载单个文件
	 * @param directory 下载目录
	 * @param downloadFile 下载的文件
	 * @param saveDirectory 保存的路径
	 * @param sftp
	 * @throws Exception 
	 */
	public void download(String directory, String downloadFile, String saveDirectory, ChannelSftp sftp) throws Exception {
		String saveFile = saveDirectory + "//" + downloadFile;
		try {
			sftp.cd(directory);
			File file = new File(saveFile);
			sftp.get(downloadFile, new FileOutputStream(file));
		} catch (SftpException e) {
			e.printStackTrace();
		}
	}
	/**
	 * 上传目录下所有文件
	 * @param directory 上传的路径
	 * @param local 本地目录
	 * 
	 */
	public void uploadDirectory(String directory, String local, ChannelSftp sftp) throws Exception{
		String uploadFile = "";
		List<String> uploadFileList;
		uploadFileList = listFiles(local,sftp);
		Iterator<String> it = uploadFileList.iterator();
		while(it.hasNext()){
			uploadFile = it.next().toString();
			upload(directory,uploadFile,sftp);
		}
	}
	/**
	 * 上传单个文件
	 * 
	 * @param directory 上传的路径
	 * @param uploadFile 上传的文件
	 * @param sftp
	 * @throws Exception
	 */
	public void upload(String directory, String uploadFile, ChannelSftp sftp) throws Exception {
		try {
			sftp.cd(directory);
			File file = new File(uploadFile);
			sftp.put(new FileInputStream(file),file.getName());
		} catch (SftpException e) {
			e.printStackTrace();
		}
	}
}