package com.taikang.ftp;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import java.util.Vector;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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;
public class SFTPUtil {
private static final Logger log = LoggerFactory.getLogger(SFTPUtil.class);
private ChannelSftp sftp;
private Session session;
/** FTP 登录用户名 */
private String username;
/** FTP 登录密码 */
private String password;
/** 私钥 */
private String privateKey;
/** FTP 服务器地址IP地址 */
private String host;
/** FTP 端口 */
private int port;
/**
* 构造基于密码认证的sftp对象
*
* @param userName
* @param password
* @param host
* @param port
*/
public SFTPUtil(String username, String password, String host, int port) {
this.username = username;
this.password = password;
this.host = host;
this.port = port;
}
/**
* 构造基于秘钥认证的sftp对象
*
* @param userName
* @param host
* @param port
* @param privateKey
*/
public SFTPUtil(String username, String host, int port, String privateKey) {
this.username = username;
this.host = host;
this.port = port;
this.privateKey = privateKey;
}
public SFTPUtil() {
}
/**
* 连接sftp服务器
*
* @throws Exception
*/
public void login() {
try {
JSch jsch = new JSch();
if (privateKey != null) {
jsch.addIdentity(privateKey);// 设置私钥
log.info("sftp connect,path of private key file:{}", privateKey);
}
log.info("sftp connect by host:{} username:{}", host, username);
session = jsch.getSession(username, host, port);
log.info("Session is build");
if (password != null) {
session.setPassword(password);
}
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
session.setConfig(config);
session.connect();
log.info("Session is connected");
Channel channel = session.openChannel("sftp");
channel.connect();
log.info("channel is connected");
sftp = (ChannelSftp) channel;
log.info(String.format("sftp server host:[%s] port:[%s] is connect successfull", host, port));
} catch (JSchException e) {
log.error("Cannot connect to specified sftp server : {}:{} \n Exception message is: {}",
new Object[] { host, port, e.getMessage() });
}
}
/**
* 关闭连接 server
*/
public void logout() {
if (sftp != null) {
if (sftp.isConnected()) {
sftp.disconnect();
log.info("sftp is closed already");
}
}
if (session != null) {
if (session.isConnected()) {
session.disconnect();
log.info("sshSession is closed already");
}
}
}
/**
* 将输入流的数据上传到sftp作为文件
*
* @param directory
* 上传到该目录
* @param sftpFileName
* sftp端文件名
* @param in
* 输入流
* @throws SftpException
* @throws Exception
*/
public void upload(String directory, String sftpFileName, InputStream input) throws SftpException {
try {
sftp.cd(directory);
} catch (SftpException e) {
log.warn("directory is not exist");
sftp.mkdir(directory);
sftp.cd(directory);
}
sftp.put(input, sftpFileName);
log.info("file:{} is upload successful", sftpFileName);
}
/**
* 上传单个文件
*
* @param directory
* 上传到sftp目录
* @param uploadFile
* 要上传的文件,包括路径
* @throws FileNotFoundException
* @throws SftpException
* @throws Exception
*/
public void upload(String directory, String uploadFile) throws FileNotFoundException, SftpException {
File file = new File(uploadFile);
upload(directory, file.getName(), new FileInputStream(file));
}
/**
* 将byte[]上传到sftp,作为文件。注意:从String生成byte[]是,要指定字符集。
*
* @param directory
* 上传到sftp目录
* @param sftpFileName
* 文件在sftp端的命名
* @param byteArr
* 要上传的字节数组
* @throws SftpException
* @throws Exception
*/
public void upload(String directory, String sftpFileName, byte[] byteArr) throws SftpException {
upload(directory, sftpFileName, new ByteArrayInputStream(byteArr));
}
public void batchupload(String localdirectory,String remotedirectory) throws Exception {
File file=new File(localdirectory);
if(file.isDirectory()) {
for(File f:file.listFiles()) {
List<String> nameList=new ArrayList<>();
String filename=f.getName();
try {
sftp.cd(remotedirectory);
Vector vector=sftp.ls(remotedirectory);
for(Object obj:vector) {
if(obj instanceof LsEntry) {
String sftpFileName=((LsEntry)obj).getFilename();
if(sftpFileName.indexOf(".")>0) {
nameList.add(sftpFileName);
}
}
}
if(nameList.size()>0) {
if(!nameList.contains(filename)) {
FileInputStream srcFile=new FileInputStream(f);
sftp.put(srcFile, filename);
}
}else {
FileInputStream srcFile=new FileInputStream(f);
sftp.put(srcFile, filename);
}
} catch (SftpException e) {
sftp.mkdir(remotedirectory);
sftp.cd(remotedirectory);
FileInputStream srcFile=new FileInputStream(f);
sftp.put(srcFile, remotedirectory+filename);
}
}
}else {
sftp.cd(remotedirectory);
FileInputStream srcFile=new FileInputStream(file);
sftp.put(srcFile, remotedirectory+File.separatorChar+file.getName());
}
}
/**
* 将字符串按照指定的字符编码上传到sftp
*
* @param directory
* 上传到sftp目录
* @param sftpFileName
* 文件在sftp端的命名
* @param dataStr
* 待上传的数据
* @param charsetName
* sftp上的文件,按该字符编码保存
* @throws UnsupportedEncodingException
* @throws SftpException
* @throws Exception
*/
public void upload(String directory, String sftpFileName, String dataStr, String charsetName)
throws UnsupportedEncodingException, SftpException {
upload(directory, sftpFileName, new ByteArrayInputStream(dataStr.getBytes(charsetName)));
}
/**
* 下载文件
*
* @param directory
* 下载目录
* @param downloadFile
* 下载的文件
* @param saveFile
* 存在本地的路径
* @throws SftpException
* @throws FileNotFoundException
* @throws Exception
*/
public void download(String directory, String downloadFile, String saveFile)
throws SftpException, FileNotFoundException {
if (directory != null && !"".equals(directory)) {
sftp.cd(directory);
}
File file = new File(saveFile);
sftp.get(downloadFile, new FileOutputStream(file));
log.info("file:{} is download successful", downloadFile);
}
/**
*
* <p>Title: batchdownload</p>
* <p>Description: </p>
* @param directory sftp上的文件夹名
* @param savedirectory 本地文件夹名
* @throws SftpException
* @throws IOException
*/
public void batchdownload(String directory,String savedirectory) throws SftpException, IOException {
if (directory != null && !"".equals(directory)) {
sftp.cd(directory);
}
Vector<?> vector=listFiles(directory);
for(Object obj:vector) {
if(obj instanceof LsEntry) {
String downloadfilename=((LsEntry)obj).getFilename();
if(downloadfilename.indexOf(".")>0) {
File savefile = new File(savedirectory+File.separatorChar+downloadfilename);
sftp.get(downloadfilename, new FileOutputStream(savefile));
}
}
}
}
/**
* 下载文件
*
* @param directory
* 下载目录
* @param downloadFile
* 下载的文件名
* @return 字节数组
* @throws SftpException
* @throws IOException
* @throws Exception
*/
public byte[] download(String directory, String downloadFile) throws SftpException, IOException {
if (directory != null && !"".equals(directory)) {
sftp.cd(directory);
}
InputStream is = sftp.get(downloadFile);
byte[] fileData = IOUtils.toByteArray(is);
log.info("file:{} is download successful", downloadFile);
return fileData;
}
/**
* 删除文件
*
* @param directory
* 要删除文件所在目录
* @param deleteFile
* 要删除的文件
* @throws SftpException
* @throws Exception
*/
public void delete(String directory, String deleteFile) throws SftpException {
sftp.cd(directory);
sftp.rm(deleteFile);
}
/**
* 列出目录下的文件
*
* @param directory
* 要列出的目录
* @param sftp
* @return
* @throws SftpException
*/
public Vector<?> listFiles(String directory) throws SftpException {
return sftp.ls(directory);
}
public static void main(String[] args) throws Exception {
SFTPUtil sftp = new SFTPUtil("admin", "admin", "127.0.0.1", 60000);
sftp.login();
// byte[] buff = sftp.download("/opt", "start.sh");
// System.out.println(Arrays.toString(buff));
// File file = new File("D:\\1.pdf");
// InputStream is = new FileInputStream(file);
//
// sftp.upload("2", "2.pdf", is);
//sftp.download("2", "2.pdf", "d://3.pdf");
// byte[] buff=sftp.download("2", "3.pdf");
// File file=new File("d://4.pdf");
// FileOutputStream fos=new FileOutputStream(file);
// fos.write(buff);
// fos.close();
// sftp.batchdownload("/2", "D:/3/");
sftp.batchupload("D:/3/", "/3");
sftp.logout();
}
}