Java远程连接Linux服务器并执行命令及上传文件

最近再开发中遇到需要将文件上传到Linux服务器上,至此整理代码笔记。

此种连接方法中有考虑到并发问题,在进行创建FTP连接的时候将每一个连接对象存放至

 ThreadLocal<Ftp> 中以确保每个线程之间对FTP的打开与关闭互不影响。
package com.test.utils;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

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

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

public class Ftp {

    //打印log日志
    private static final Log logger = LogFactory.getLog(Ftp.class);

    private static Date last_push_date = null;

    private Session sshSession;

    private ChannelSftp channel;

    private static ThreadLocal<Ftp> sftpLocal = new ThreadLocal<Ftp>();

    private Ftp(String host, int port, String username, String password) throws Exception {
        JSch jsch = new JSch();
        jsch.getSession(username, host, port);
        //根据用户名,密码,端口号获取session
        sshSession = jsch.getSession(username, host, port);
        sshSession.setPassword(password);
        //修改服务器/etc/ssh/sshd_config 中 GSSAPIAuthentication的值yes为no,解决用户不能远程登录
        sshSession.setConfig("userauth.gssapi-with-mic", "no");

        //为session对象设置properties,第一次访问服务器时不用输入yes
        sshSession.setConfig("StrictHostKeyChecking", "no");
        sshSession.connect();
        //获取sftp通道
        channel = (ChannelSftp)sshSession.openChannel("sftp");
        channel.connect();
        logger.info("连接ftp成功!" + sshSession);
    }

    /**
     * 是否已连接
     *
     * @return
     */
    private boolean isConnected() {
        return null != channel && channel.isConnected();
    }

    /**
     * 获取本地线程存储的sftp客户端
     *
     * @return
     * @throws Exception
     */
    public static Ftp getSftpUtil(String host, int port, String username, String password) throws Exception {
        //获取本地线程
        Ftp sftpUtil = sftpLocal.get();
        if (null == sftpUtil || !sftpUtil.isConnected()) {
            //将新连接防止本地线程,实现并发处理
            sftpLocal.set(new Ftp(host, port, username, password));
        }
        return sftpLocal.get();
    }

    /**
     * 释放本地线程存储的sftp客户端
     */
    public static void release() {
        if (null != sftpLocal.get()) {
            sftpLocal.get().closeChannel();
            logger.info("关闭连接" + sftpLocal.get().sshSession);
            sftpLocal.set(null);

        }
    }

    /**
     * 关闭通道
     *
     * @throws Exception
     */
    public void closeChannel() {
        if (null != channel) {
            try {
                channel.disconnect();
            } catch (Exception e) {
                logger.error("关闭SFTP通道发生异常:", e);
            }
        }
        if (null != sshSession) {
            try {
                sshSession.disconnect();
            } catch (Exception e) {
                logger.error("SFTP关闭 session异常:", e);
            }
        }
    }

    /**
     * @param directory  上传ftp的目录
     * @param uploadFile 本地文件目录
     *
     */
    public void upload(String directory, String uploadFile) throws Exception {
    	try {
//执行列表展示ls 命令 channel.ls(directory);
//执行盘符切换cd 命令 channel.cd(directory); List<File> files = getFiles(uploadFile, new ArrayList<File>()); for (int i = 0; i < files.size(); i++) { File file = files.get(i); InputStream input = new BufferedInputStream(new FileInputStream(file)); channel.put(input, file.getName()); try { if (input != null) input.close(); } catch (Exception e) { e.printStackTrace(); logger.error(file.getName() + "关闭文件时.....异常!" + e.getMessage()); } if (file.exists()) { boolean b = file.delete(); logger.info(file.getName() + "文件上传完毕!删除标识:" + b); } } }catch (Exception e) { logger.error("【子目录创建中】:",e); //创建子目录 channel.mkdir(directory); } } //获取文件 public List<File> getFiles(String realpath, List<File> files) { File realFile = new File(realpath); if (realFile.isDirectory()) { File[] subfiles = realFile.listFiles(new FileFilter() { @Override public boolean accept(File file) { if (null == last_push_date ) { return true; } else { long modifyDate = file.lastModified(); return modifyDate > last_push_date.getTime(); } } }); for (File file : subfiles) { if (file.isDirectory()) { getFiles(file.getAbsolutePath(), files); } else { files.add(file); } if (null == last_push_date) { last_push_date = new Date(file.lastModified()); } else { long modifyDate = file.lastModified(); if (modifyDate > last_push_date.getTime()) { last_push_date = new Date(modifyDate); } } } } return files; } }

  

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转载自www.cnblogs.com/staticking/p/9082648.html