1、下载工具
2、建用户
3、决定用什么方式连接：SSH？还是Telnet?
4、利用
工具连接SFTP
注意：
这个工具没有以上那个工具好用，大家可以尝试用下，刚开始用的secureCRT怎么都连不上
5、撸代码
/**
* sftp工具类
*
*/
public class SFTPUtils
{
private static Logger log = Logger.getLogger(SFTPUtils.class.getName());
private String host;//服务器连接ip
private String username;//用户名
private String password;//密码
private int port = 22;//端口号
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 void connect()
{
try
{
JSch jsch = new JSch();
jsch.getSession(username, host, port);
sshSession = jsch.getSession(username, host, port);
if (log.isInfoEnabled())
{
log.info("Session created.");
}
sshSession.setPassword(password);
Properties sshConfig = new Properties();
sshConfig.put("StrictHostKeyChecking", "no");
sshSession.setConfig(sshConfig);
sshSession.connect();
if (log.isInfoEnabled())
{
log.info("Session connected.");
}
Channel channel = sshSession.openChannel("sftp");
channel.connect();
if (log.isInfoEnabled())
{
log.info("Opening Channel.");
}
sftp = (ChannelSftp) channel;
if (log.isInfoEnabled())
{
log.info("Connected to " + host + ".");
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
* 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 already");
}
}
}
if (this.sshSession != null)
{
if (this.sshSession.isConnected())
{
this.sshSession.disconnect();
if (log.isInfoEnabled())
{
log.info("sshSession is closed already");
}
}
}
}
/**
* 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:/assess/sftp/jiesuan_2/2014/)
* @param localPath：本地保存目录(以路径符号结束,D:\Duansha\sftp\)
* @param fileFormat：下载文件格式(以特定字符开头,为空不做检验)
* @param fileEndFormat：下载文件格式(文件格式)
* @param del：下载后是否删除sftp文件
* @return
*/
public List<String> batchDownLoadFile(String remotePath, String localPath,
String fileFormat, String fileEndFormat, boolean del)
{
List<String> filenames = new ArrayList<String>();
try
{
// connect();
Vector v = null;
// sftp.cd(remotePath);
if (v.size() > 0)
{
System.out.println("本次处理文件个数不为零,开始下载...fileSize=" + v.size());
Iterator it = v.iterator();
while (it.hasNext())
{
LsEntry entry = (LsEntry) it.next();
String filename = entry.getFilename();
SftpATTRS attrs = entry.getAttrs();
if (!attrs.isDir())
{
boolean flag = false;
String localFileName = localPath + filename;
fileFormat = fileFormat == null ? "" : fileFormat
.trim();
fileEndFormat = fileEndFormat == null ? ""
: fileEndFormat.trim();
// 三种情况
if (fileFormat.length() > 0 && fileEndFormat.length() > 0)
{
if (filename.startsWith(fileFormat) && filename.endsWith(fileEndFormat))
{
flag = downloadFile(remotePath, filename,localPath, filename);
if (flag)
{
filenames.add(localFileName);
if (flag && del)
{
deleteSFTP(remotePath, filename);
}
}
}
}
else if (fileFormat.length() > 0 && "".equals(fileEndFormat))
{
if (filename.startsWith(fileFormat))
{
flag = downloadFile(remotePath, filename, localPath, filename);
if (flag)
{
filenames.add(localFileName);
if (flag && del)
{
deleteSFTP(remotePath, filename);
}
}
}
}
else if (fileEndFormat.length() > 0 && "".equals(fileFormat))
{
if (filename.endsWith(fileEndFormat))
{
flag = downloadFile(remotePath, filename,localPath, filename);
if (flag)
{
filenames.add(localFileName);
if (flag && del)
{
deleteSFTP(remotePath, filename);
}
}
}
}
else
{
flag = downloadFile(remotePath, filename,localPath, filename);
if (flag)
{
filenames.add(localFileName);
if (flag && del)
{
deleteSFTP(remotePath, filename);
}
}
}
}
}
}
if (log.isInfoEnabled())
{
log.info("download file is success:remotePath=" + remotePath
+ "and localPath=" + localPath + ",file size is"
+ v.size());
}
}
finally
{
// this.disconnect();
}
return filenames;
}
/**
* 下载单个文件
* @param remotPath：远程下载目录(以路径符号结束)
* @param remoteFileName：下载文件名
* @param localPath：本地保存目录(以路径符号结束)
* @param localFileName：保存文件名
* @return
*/
public boolean downloadFile(String remotePath, String remoteFileName,String localPath, String localFileName)
{
FileOutputStream fieloutput = null;
try
{
// sftp.cd(remotePath);
File file = new File(localPath + localFileName);
// mkdirs(localPath + localFileName);
fieloutput = new FileOutputStream(file);
sftp.get(remotePath +"/"+ remoteFileName, fieloutput);
if (log.isInfoEnabled())
{
log.info("===DownloadFile:" + remoteFileName + " success from sftp.");
}
return true;
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (SftpException e)
{
e.printStackTrace();
}
finally
{
if (null != fieloutput)
{
try
{
fieloutput.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
sftp.disconnect();
}
return false;
}
/**
* 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 IOException
*/
public boolean download(String directory, String downloadFile,
String saveFile) throws SftpException, IOException {
boolean flag = false;
FileOutputStream outputfile = null;
try {
if (directory != null && !"".equals(directory)) {
sftp.cd(directory);
}
// 不能操作文件夹，不然报错。
String filepath = saveFile + downloadFile;
File file = new File(filepath);
outputfile = new FileOutputStream(file.getPath());
sftp.get(downloadFile, outputfile);
flag = true;
} catch (Exception e) {
e.printStackTrace();
return flag;
} finally {
outputfile.close();
}
return flag;
}
/**
* 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 localPath, String localFileName)
{
FileInputStream in = null;
try
{
sftp.cd(remotePath);
File file = new File(localPath + localFileName);
in = new FileInputStream(file);
sftp.put(in, remoteFileName);
return true;
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (SftpException e)
{
e.printStackTrace();
}
finally
{
if (in != null)
{
try
{
in.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
sftp.disconnect();
}
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 del：上传后是否删除本地文件
* @return
*/
public boolean bacthUploadFile(String remotePath, String localPath,
boolean del)
{
try
{
connect();
File file = new File(localPath);
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++)
{
if (files[i].isFile()
&& files[i].getName().indexOf("bak") == -1)
{
if (this.uploadFile(remotePath, files[i].getName(),
localPath, files[i].getName())
&& del)
{
deleteFile(localPath + files[i].getName());
}
}
}
if (log.isInfoEnabled())
{
log.info("upload file is success:remotePath=" + remotePath
+ "and localPath=" + localPath + ",file size is "
+ files.length);
}
return true;
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
this.disconnect();
}
return false;
}
/**
* 删除本地文件
* @param filePath
* @return
*/
public boolean deleteFile(String filePath)
{
File file = new File(filePath);
if (!file.exists())
{
return false;
}
if (!file.isFile())
{
return false;
}
boolean rs = file.delete();
if (rs && log.isInfoEnabled())
{
log.info("delete file success from local.");
}
return rs;
}
/**
* 创建目录
* @param createpath
* @return
*/
public boolean createDir(String createpath)
{
try
{
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());
}
}
this.sftp.cd(createpath);
return true;
}
catch (SftpException e)
{
e.printStackTrace();
}finally{
sftp.disconnect();
}
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 (Exception e)
{
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 deleteFile：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 List<String> listFiles(String directory) throws SftpException
{
List fileNameList = new ArrayList();
Vector fileList = sftp.ls(directory);
Iterator it = fileList.iterator();
while (it.hasNext())
{
String fileName = ((ChannelSftp.LsEntry)it.next()).getFilename();
if ((".".equals(fileName)) || ("..".equals(fileName))) {
continue;
}
fileNameList.add(fileName);
}
return fileNameList;
}
/**
* 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 sftp
* @throws IOException
* @throws JSchException
*/
public InputStream getInputStream(String directory, String downloadFile) throws IOException, JSchException {
try {
sftp.cd(directory);
InputStream streatm =sftp.get(downloadFile);
return streatm;
} catch (Exception e) {
e.printStackTrace();
}
return sftp.getInputStream();
}
/**
* 下载文件
*
* @param directory
* 下载目录
* @param downloadFile
* 下载的文件名
* @return 字节数组
*/
public ByteArrayInputStream getByteArrayInputStream(String directory, String downloadFile)
throws SftpException, IOException {
if (directory != null && !"".equals(directory)) {
sftp.cd(directory);
}
InputStream is = sftp.get(downloadFile);
ByteArrayOutputStream output = new ByteArrayOutputStream();
try {
byte[] buffer = new byte[1024];
int num = is.read(buffer);
while (num != -1) {
output.write(buffer, 0, num);
num = is.read(buffer);
}
output.flush();
} finally {
if (is != null) {
is.close();
}
}
ByteArrayInputStream in=new ByteArrayInputStream(output.toByteArray());
return in;
}
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:/";
// Sftp下载路径
String sftpPath = "/home/2014/";
List<String> filePathList = new ArrayList<String>();
try
{
sftp = new SFTPUtils("XX.XX.1XX.XX", "XXX", "XXXX");
// sftp.connect();
// // 下载
// ByteArrayInputStream in=sftp.getByteArrayInputStream("/XXX/20181030/", "XXX.xml");
// in.close();
// sftp.disconnect();
sftp.downxxFile(sftp, "123", "456");
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
sftp.disconnect();
}
}
}