package xxx.ftporsftpconfig;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Vector;
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.Session;
import com.jcraft.jsch.SftpATTRS;
import com.jcraft.jsch.SftpException;
public class SftpUtil {
private long count;
/**
* 已经连接次数
*/
private long count1 = 0;
private long sleepTime;
private static final Logger logger = LoggerFactory.getLogger(SftpUtil.class);
/**
* 连接sftp服务器
*
* @return
*/
public ChannelSftp connect(FtpOrSftpConfig sftpConfig) {
ChannelSftp sftp = null;
try {
JSch jsch = new JSch();
jsch.getSession(sftpConfig.getUsername(), sftpConfig.getHostname(), sftpConfig.getPort());
Session sshSession = jsch.getSession(sftpConfig.getUsername(), sftpConfig.getHostname(), sftpConfig.getPort());
logger.info("Session created ... UserName=" + sftpConfig.getUsername() + ";host=" + sftpConfig.getHostname() + ";port=" + sftpConfig.getPort());
sshSession.setPassword(sftpConfig.getPassword());
Properties sshConfig = new Properties();
sshConfig.put("StrictHostKeyChecking", "no");
sshSession.setConfig(sshConfig);
sshSession.connect();
logger.info("Session connected ...");
logger.info("Opening Channel ...");
Channel channel = sshSession.openChannel("sftp");
channel.connect();
sftp = (ChannelSftp) channel;
logger.info("登录成功");
} catch (Exception e) {
try {
count1 += 1;
if (count == count1) {
throw new RuntimeException(e);
}
Thread.sleep(sleepTime);
logger.info("重新连接....");
connect(sftpConfig);
} catch (InterruptedException e1) {
throw new RuntimeException(e1);
}
}
return sftp;
}
/**
* 上传文件
*
* @param directory 上传的目录
* @param uploadFile 要上传的文件
* @param sftpConfig
*/
public void upload(String directory, String uploadFile, FtpOrSftpConfig sftpConfig) {
ChannelSftp sftp = connect(sftpConfig);
try {
sftp.cd(directory);
} catch (SftpException e) {
try {
createDir(directory, sftp);
sftp.cd(directory);
} catch (SftpException e1) {
throw new RuntimeException("ftp创建文件路径失败" + directory);
}
}
File file = new File(uploadFile);
InputStream inputStream=null;
try {
inputStream = new FileInputStream(file);
sftp.put(inputStream, file.getName());
} catch (Exception e) {
throw new RuntimeException("sftp异常" + e);
} finally {
disConnect(sftp);
closeStream(inputStream,null);
}
}
public void createDir(String createpath, ChannelSftp sftp) {
try {
if (isDirExist(createpath,sftp)) {
sftp.cd(createpath);
return;
}
String pathArry[] = createpath.split("/");
StringBuffer filePath = new StringBuffer("/");
for (String path : pathArry) {
if (path.equals("")) {
continue;
}
filePath.append(path + "/");
if (isDirExist(filePath.toString(),sftp)) {
sftp.cd(filePath.toString());
} else {
// 建立目录
sftp.mkdir(filePath.toString());
// 进入并设置为当前目录
sftp.cd(filePath.toString());
}
}
sftp.cd(createpath);
} catch (SftpException e) {
}
}
public boolean isDirExist(String directory, ChannelSftp sftp) {
boolean isDirExistFlag = false;
try {
SftpATTRS sftpATTRS = sftp.lstat(directory);
isDirExistFlag = true;
return sftpATTRS.isDir();
} catch (Exception e) {
if (e.getMessage().toLowerCase().equals("no such file")) {
isDirExistFlag = false;
}
}
return isDirExistFlag;
}
/**
* 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
* @param sftpConfig
*/
public void download(String directory, String downloadFile, String saveFile, FtpOrSftpConfig sftpConfig) {
OutputStream output = null;
try {
File localDirFile = new File(saveFile);
// 判断本地目录是否存在，不存在需要新建各级目录
if (!localDirFile.exists()) {
localDirFile.mkdirs();
}
if (logger.isInfoEnabled()) {
logger.info("开始获取远程文件:[{}]---->[{}]", new Object[]{directory, saveFile});
}
ChannelSftp sftp = connect(sftpConfig);
sftp.cd(directory);
if(downloadFile.contains(".")) {
output = new FileOutputStream(new File(saveFile.concat(File.separator).concat(downloadFile)+File.separator));
sftp.get(downloadFile, output);
}else {
File dirFile = new File(saveFile+File.separator+downloadFile+File.separator);
if (!dirFile.exists()) {
dirFile.mkdirs();
}
}
disConnect(sftp);
} catch (Exception e) {
throw new RuntimeException("文件下载出现异常，[{}]", e);
} finally {
closeStream(null,output);
}
}
/**
* 下载远程文件夹下的所有文件
*
* @param remoteFilePath
* @param localDirPath
* @throws Exception
*/
public void getFileDir(String remoteFilePath, String localDirPath, FtpOrSftpConfig sftpConfig) throws Exception {
File localDirFile = new File(localDirPath);
// 判断本地目录是否存在，不存在需要新建各级目录
if (!localDirFile.exists()) {
localDirFile.mkdirs();
}
ChannelSftp channelSftp = connect(sftpConfig);
Vector<LsEntry> lsEntries = channelSftp.ls(remoteFilePath);
for (LsEntry entry : lsEntries) {
String fileName = entry.getFilename();
if (checkFileName(fileName)) {
continue;
}
if(fileName.contains(".")) {
String remoteFileName = getRemoteFilePath(remoteFilePath, fileName);
channelSftp.get(remoteFileName, localDirPath);
}else {
File dirFile = new File(localDirPath+File.separator+fileName+File.separator);
if (!dirFile.exists()) {
dirFile.mkdirs();
}
getFileDir(remoteFilePath+File.separator+fileName, localDirPath+File.separator+fileName, sftpConfig);
}
}
disConnect(channelSftp);
}
/**
* 关闭流
* @param outputStream
*/
private void closeStream(InputStream inputStream,OutputStream outputStream) {
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(inputStream != null){
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private boolean checkFileName(String fileName) {
if (".".equals(fileName) || "..".equals(fileName)) {
return true;
}
return false;
}
private String getRemoteFilePath(String remoteFilePath, String fileName) {
if (remoteFilePath.endsWith("/")) {
return remoteFilePath.concat(fileName);
} else {
return remoteFilePath.concat("/").concat(fileName);
}
}
/**
* 删除文件
*
* @param directory 要删除文件所在目录
* @param deleteFile 要删除的文件
* @param sftp
*/
public void delete(String directory, String deleteFile, ChannelSftp sftp) {
try {
sftp.cd(directory);
sftp.rm(deleteFile);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* 列出目录下的文件
*
* @param directory 要列出的目录
* @param sftpConfig
* @return
* @throws SftpException
*/
public List<String> listFiles(String directory, FtpOrSftpConfig sftpConfig) throws SftpException {
ChannelSftp sftp = connect(sftpConfig);
List fileNameList = new ArrayList();
try {
sftp.cd(directory);
} catch (SftpException e) {
return fileNameList;
}
Vector vector = sftp.ls(directory);
for (int i = 0; i < vector.size(); i++) {
if (vector.get(i) instanceof LsEntry) {
LsEntry lsEntry = (LsEntry) vector.get(i);
String fileName = lsEntry.getFilename();
if (".".equals(fileName) || "..".equals(fileName)) {
continue;
}
fileNameList.add(fileName);
}
}
disConnect(sftp);
return fileNameList;
}
/**
* 断掉连接
*/
public void disConnect(ChannelSftp sftp) {
try {
sftp.disconnect();
sftp.getSession().disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}
public SftpUtil(long count, long sleepTime) {
this.count = count;
this.sleepTime = sleepTime;
}
public SftpUtil() {
}
}補足依存
<!-- sftp文件下载jar -->
<dependency>
<groupId>com.jcraft</groupId>
<artifactId>jsch</artifactId>
<version>0.1.54</version>
</dependency>
<!-- ftp文件下载 -->
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
<version>3.6</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.9</version>
</dependency>この記事は、ブロググループ投稿やマルチ投稿などのオペレーティングツールプラットフォームであるOpenWriteによって公開されています。