Java用SFTP实现上传下载功能

请先提前下载jar包jsch-0.1.54.jar，官网下载地址

http://www.jcraft.com/jsch/

import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.util.Properties;import com.jcraft.jsch.Channel;import com.jcraft.jsch.ChannelSftp;import com.jcraft.jsch.JSch;import com.jcraft.jsch.Session;/** * SFTP工具类 */public class SFTPUtils {static Session sshSession = null;public static void main(String[] args) {ChannelSftp ftp = getConnectIP("223.105.1.30", "22", "username", "password");upload("/home/cmsoftu/detail/", "E:\\recordfilecopy\\record1.txt", ftp);// download("/home/cmsoftu/detail_history/", "record1.txt", "E:\\recordfile\\record1.txt", ftp);}/** * 获取ChannelSftp gst:2017-9-12 *  * @param host *            主机 * @param sOnlineSftpPort *            端口 * @param username *            用户名 * @param password *            密码 * @return */public static ChannelSftp getConnectIP(String host, String sOnlineSftpPort, String username, String password) {int port = 0;if (!("".equals(sOnlineSftpPort)) && null != sOnlineSftpPort) {port = Integer.parseInt(sOnlineSftpPort);}ChannelSftp sftp = null;try {JSch jsch = new JSch();jsch.getSession(username, host, port);sshSession = jsch.getSession(username, host, port);sshSession.setPassword(password);Properties sshConfig = new Properties();sshConfig.put("StrictHostKeyChecking", "no");sshSession.setConfig(sshConfig);sshSession.connect();Channel channel = sshSession.openChannel("sftp");channel.connect();sftp = (ChannelSftp) channel;} catch (Exception e) {e.printStackTrace();}return sftp;}/** * 上传 gst:2017-9-12 *  * @param directory *            sftp 服务器目录 * @param uploadFile *            上传文件路径 * @param sftp */public static void upload(String directory, String uploadFile, ChannelSftp sftp) {try {sftp.cd(directory);File file = new File(uploadFile);sftp.put(new FileInputStream(file), file.getName());} catch (Exception e) {e.printStackTrace();} finally {if (sftp.isConnected()) {sshSession.disconnect();sftp.disconnect();}}}/** * 下载 gst:2017-9-12 *  * @param directory *            sftp服务器目录 * @param downloadFile *            目录下的文件名称 * @param saveFile *            本地保存文件路径 * @param sftp */public static 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();} finally {if (sftp.isConnected()) {sshSession.disconnect();sftp.disconnect();}}}/** * 删除 gst:2017-9-12 *  * @param directory * @param deleteFile * @param sftp */public static void delete(String directory, String deleteFile, ChannelSftp sftp) {try {sftp.cd(directory);sftp.rm(deleteFile);} catch (Exception e) {e.printStackTrace();} finally {if (sftp.isConnected()) {sshSession.disconnect();sftp.disconnect();}}}}