JAVA Sftp 上传下载
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package xxx;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;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import java.util.Vector;
/**
* sftp工具类
* Created by wdj on 2017/5/26.
*
*/
public class SftpUtils
{
private static Logger log = LoggerFactory.getLogger(SftpUtils.class);
private String host;
private String username;
private String password;
private int port = 22;
private ChannelSftp sftp = null;
private Session sshSession = null;
public SftpUtils()
{
}
public SftpUtils(String host, int port, String username, String password)
{
this.host = host;
this.username = username;
this.password = password;
this.port = port;
}
public SftpUtils(String host, String username, String password)
{
this.host = host;
this.username = username;
this.password = password;
}
/**
* * 通过SFTP连接服务器
*
*/
public boolean connect()
{
try
{
JSch jsch = new JSch();
sshSession = jsch.getSession(username, host, port);
sshSession.setPassword(password);
Properties sshConfig = new Properties();
sshConfig.put("StrictHostKeyChecking", "no");
sshSession.setConfig(sshConfig);
sshSession.connect();
if (log.isInfoEnabled())
{
log.info("jsch Session connected.");
}
Channel channel = sshSession.openChannel("sftp");
channel.connect();
if (log.isInfoEnabled())
{
log.info("jsch Opening sftp Channel.");
}
sftp = (ChannelSftp) channel;
if (log.isInfoEnabled())
{
log.info("Connected to " + host + ".");
}
return true;
}
catch (Exception e)
{
log.error(" sftp 连接超时...{}", e.getMessage());
}
return false;
}
/**
* * 关闭连接
*
*/
public void disconnect()
{
if (this.sftp != null)
{
if (this.sftp.isConnected())
{
this.sftp.disconnect();
if (log.isInfoEnabled())
{
log.info(" sftp is closed");
}
}
}
if (this.sshSession != null)
{
if (this.sshSession.isConnected())
{
this.sshSession.disconnect();
if (log.isInfoEnabled())
{
log.info(" sshSession is closed");
}
}
}
}
/**
* * 批量下载文件
* * @param remotPath：远程下载目录(以路径符号结束,可以为相对路径eg: /home/sftp/2014/)
* * @param localPath：本地保存目录(以路径符号结束,D:downloacsftp)
* * @param prefix：文件名开头
* * @param suffix：文件名结尾
* * @param delRemote：下载后是否删除sftp文件
* * @return
*
*/
public List<String> downloadFiles(String remotePath, String localPath, String prefix, String suffix, boolean delRemote)
{
List<String> downfiles = new ArrayList<String>();
try
{
Vector v = listFiles(remotePath);
if (v.size() > 0)
{
prefix = prefix == null ? "" : prefix.trim();
suffix = suffix == null ? "" : suffix.trim();
boolean isDown;
Iterator it = v.iterator();
while (it.hasNext())
{
LsEntry entry = (LsEntry) it.next();
String filename = entry.getFilename();
SftpATTRS attrs = entry.getAttrs();
if (!attrs.isDir())
{
File localFile = new File(localPath, filename);
// 验证开头和结尾
if ((prefix.equals("") || filename.startsWith(prefix)) && (suffix.equals("") || filename.endsWith(suffix)))
{
isDown = downloadFile(remotePath, filename, localFile);
if (isDown)
{
downfiles.add(localFile.getName());
if (delRemote)
deleteSFTP(remotePath, filename);
}
}
}
}
if (log.isInfoEnabled())
{
log.info("file download success，file size : {}", downfiles.size());
}
}
}
catch (SftpException e)
{
e.printStackTrace();
}
finally
{
// this.disconnect();
}
return downfiles;
}
/**
* 下载单个文件
*
* @param remotePath
* @param remoteFileName
* @param localFile
* @return
*/
public boolean downloadFile(String remotePath, String remoteFileName, File localFile)
{
//FileOutputStream fieloutput = null;
try
{
// sftp.cd(remotePath);
// mkdirs(localPath + localFileName);
//fieloutput = new FileOutputStream(localFile);
// sftp.get(remotePath + remoteFileName, fieloutput);
sftp.get(remotePath + remoteFileName, localFile.getAbsolutePath());
log.info("=== file.download: [{}] success.", remoteFileName);
return true;
}
catch (Exception e)
{
if (e.getMessage().toLowerCase().equals("no such file"))
{
if (log.isDebugEnabled())
{
log.debug("=== file.download.error: [{}], {}.", remoteFileName, e.getMessage());
}
}
else
log.error("=== file.download.error: [{}], {}.", remoteFileName, e.getMessage());
localFile.delete();
}
finally
{
// if (null != fieloutput)
// {
// try
// {
// fieloutput.close();
// }
// catch (IOException e)
// {
// }
// }
}
return false;
}
/**
* * 上传单个文件
* * @param remotePath：远程保存目录
* * @param remoteFileName：保存文件名
* * @param localPath：本地上传目录(以路径符号结束)
* * @param localFileName：上传的文件名
* * @return
*
*/
public boolean uploadFile(String remotePath, String remoteFileName, String localFile)
{
FileInputStream in = null;
try
{
cdDir(remotePath);
in = new FileInputStream(localFile);
sftp.put(in, remoteFileName);
if (log.isInfoEnabled())
{
log.info(" file.upload: [{}] success.", localFile.substring(localFile.lastIndexOf(File.separator)));
}
return true;
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (SftpException e)
{
e.printStackTrace();
}
finally
{
if (in != null)
{
try
{
in.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
return false;
}
/**
* * 批量上传文件
* * @param remotePath：远程保存目录
* * @param localPath：本地上传目录(以路径符号结束)
* * @param delLocal：上传后是否删除本地文件
* * @return
*
*/
public List<String> uploadFiles(String remotePath, String localPath, String prefix, String suffix, boolean delLocal)
{
List<String> upfiles = new ArrayList<String>();
try
{
File file = new File(localPath);
File[] files = file.listFiles();
prefix = prefix == null ? "" : prefix.trim();
suffix = suffix == null ? "" : suffix.trim();
for (int i = 0; i < files.length; i++)
{
String fileName = files[i].getName();
if ((prefix.equals("") || fileName.startsWith(prefix)) && (suffix.equals("") || fileName.endsWith(suffix)))
{
if (files[i].isFile())
{
boolean isUpload = this.uploadFile(remotePath, fileName, files[i].getAbsolutePath());
if (isUpload)
{
upfiles.add(files[i].getAbsolutePath());
if (delLocal)
deleteLocal(files[i]);
}
}
}
}
if (log.isInfoEnabled())
{
log.info(" file upload success，file size : {}", upfiles.size());
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
this.disconnect();
}
return upfiles;
}
/**
* * 删除本地文件
* * @param filePath
* * @return
*
*/
public boolean deleteLocal(File file)
{
if (!file.exists())
{
return false;
}
if (!file.isFile())
{
return false;
}
boolean rs = file.delete();
if (rs && log.isInfoEnabled())
{
log.info(" file.delete.success.");
}
return rs;
}
/**
* * 创建目录
* * @param createpath
* * @return
*
*/
public boolean cdDir(String createpath)
{
try
{
String pwd = this.sftp.pwd();
if (pwd.contains("/" + createpath + "/"))
return true;
if (isDirExist(createpath))
{
this.sftp.cd(createpath);
return true;
}
String pathArry[] = createpath.split("/");
StringBuffer filePath = new StringBuffer("/");
for (String path : pathArry)
{
if (path.equals(""))
{
continue;
}
filePath.append(path + "/");
if (isDirExist(filePath.toString()))
{
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());
}
}
pwd = this.sftp.pwd();
if (pwd.contains("/" + createpath + "/"))
return true;
}
catch (SftpException e)
{
e.printStackTrace();
}
return false;
}
/**
* * 判断目录是否存在
* * @param directory
* * @return
*
*/
public boolean isDirExist(String directory)
{
boolean isDirExistFlag = false;
try
{
SftpATTRS sftpATTRS = sftp.lstat(directory);
isDirExistFlag = true;
return sftpATTRS.isDir();
}
catch (SftpException e)
{
if (e.id == ChannelSftp.SSH_FX_NO_SUCH_FILE)
//if (e.getMessage().toLowerCase().equals("no such file"))
{
isDirExistFlag = false;
}
}
return isDirExistFlag;
}
/**
* * 删除stfp文件
* * @param directory：要删除文件所在目录
* * @param deleteLocal：要删除的文件
* * @param sftp
*
*/
public void deleteSFTP(String directory, String deleteFile)
{
try
{
// sftp.cd(directory);
sftp.rm(directory + deleteFile);
if (log.isInfoEnabled())
{
log.info("delete file success from sftp.");
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
* * 如果目录不存在就创建目录
* * @param path
*
*/
public void mkdirs(String path)
{
File f = new File(path);
String fs = f.getParent();
f = new File(fs);
if (!f.exists())
{
f.mkdirs();
}
}
/**
* * 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 String getHost()
{
return host;
}
public void setHost(String host)
{
this.host = host;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
public int getPort()
{
return port;
}
public void setPort(int port)
{
this.port = port;
}
public ChannelSftp getSftp()
{
return sftp;
}
public void setSftp(ChannelSftp sftp)
{
this.sftp = sftp;
}
/**
* 测试
*/
public static void main(String[] args)
{ // SftpUtils sftp = null;
// // 本地存放地址
// String localPath = "D:\dev\java\workspace\testobj\outfiles\";
//
// // Sftp下载路径
// String sftpPath = "/home/web/static/js/";
// List<String> filePathList = new ArrayList<String>();
// try
// {
// sftp = new SftpUtils("127.0.0.1", 22, "root", "xxxx");
// sftp.connect();
// // 下载
// // sftp.downloadFiles(sftpPath, localPath, "", ".js", false);
//
// sftp.uploadFiles(sftpPath, localPath, "", "rar", true);
//
// }
// catch (Exception e)
// {
// e.printStackTrace();
// }
// finally
// {
// sftp.disconnect();
// }
}
}
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