maven依赖
<!-- https://mvnrepository.com/artifact/com.jcraft/jsch --><dependency> <groupId>com.jcraft</groupId> <artifactId>jsch</artifactId> <version>0.1.54</version></dependency>代码如下
package com;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!"); } /** * 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 * @param isDel 是否删除原文件 * */ public void upload(String directory, String uploadFile, boolean isDel) 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()&&isDel) { 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); } } } }else { files.add(realFile); } return files; } public static void main(String[] args) throws Exception {Ftp ftp = new Ftp("100.100.100.100", 22, "root", "root");ftp.upload("/home/haha/push", "D:\abc.jar",false);ftp.closeChannel();}}