JAVA代码时间SFTP文件的下载

参考文章：http://blog.csdn.net/smallerpig/article/details/50976191

SFTP文件的下载与FTP文件的下载差别较大,需要下载jsch-0.1.54jar包

package com.cd.util;

import com.jcraft.jsch.JSchException;  

public class SftpDownloadTestScript {  

    public static void main (String[] args)throws JSchException {  

        String ftpHost = "192.168.188.155";
        String ftpUserName = "exftp";
        String ftpPassword = "sFtP06222013";
        int ftpPort = 22;
        String ftpPath = ".";
        String localPath = "D:/SFTP/uploadFiles/demo";
        String fileName = "aa.jpg";
        FtpUtil.downloadSftpFile(ftpHost, ftpUserName, ftpPassword, ftpPort, ftpPath, localPath, fileName);
    }
}  

package com.cd.util;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.SocketException;
import java.util.Properties;  

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;  

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

public class FtpUtil {  

    private final static Log logger = LogFactory.getLog(FtpUtil.class);  

    /*
     * 从SFTP服务器下载文件
     *
     * @param ftpHost SFTP IP地址
     *
     * @param ftpUserName SFTP 用户名
     *
     * @param ftpPassword SFTP用户名密码
     *
     * @param ftpPort SFTP端口
     *
     * @param ftpPath SFTP服务器中文件所在路径 格式： ftptest/aa
     *
     * @param localPath 下载到本地的位置 格式：H:/download
     *
     * @param fileName 文件名称
     */
    public static void downloadSftpFile(String ftpHost, String ftpUserName,
            String ftpPassword, int ftpPort, String ftpPath, String localPath,
            String fileName) throws JSchException {
        Session session = null;
        Channel channel = null;  

        JSch jsch = new JSch();
        System.out.println(1);
        session = jsch.getSession(ftpUserName, ftpHost, ftpPort);
        System.out.println(2);
        session.setPassword(ftpPassword);
        System.out.println(3);
        session.setTimeout(100000);
        System.out.println(4);
        Properties config = new Properties();
        System.out.println(5);
        config.put("StrictHostKeyChecking", "no");
        System.out.println(6);
        session.setConfig(config);
        System.out.println(7);
        session.connect();
        System.out.println(8);

        channel = session.openChannel("sftp");
        System.out.println(9);
        channel.connect();
        ChannelSftp chSftp = (ChannelSftp) channel;
        System.out.println(10);

        String ftpFilePath = ftpPath + "/" + fileName;
        String localFilePath = localPath + File.separatorChar + fileName;
        System.out.println(11);
        try {
            System.out.println("ftpFilePath="+ftpFilePath);
            System.out.println("localFilePath="+localFilePath);
            System.out.println("localPath="+localPath);
            chSftp.get(ftpFilePath, localPath);
            System.out.println(13);
        } catch (Exception e) {
            e.printStackTrace();
            logger.info("download error.");
        } finally {
            chSftp.quit();
            channel.disconnect();
            session.disconnect();
        }  

    }  

}  

下面是SFTP根目录: