开区服务器SFPT协议下载上传文件详细介绍

public class MySFTP 开区服务器 {

 public ChannelSftp connect(String host, int port, String username, String password) {  ChannelSftp sftp = null;  try {   JSch jsch = new JSch();   jsch.getSession(username, host, port);   Session sshSession = jsch.getSession(username, host, port);   System.out.println("Session created.");   sshSession.setPassword(password);   Properties sshConfig = new Properties();   sshConfig.put("StrictHostKeyChecking", "no");   sshSession.setConfig(sshConfig);   sshSession.connect();   System.out.println("Session connected.");   System.out.println("Opening Channel.");   Channel channel = sshSession.openChannel("sftp");   channel.connect();   sftp = (ChannelSftp) channel;   System.out.println("Connected to " + host + ".");  } catch (Exception e) {

  }  return sftp; }

 public 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();  } }

 public boolean download(String directory, String downloadFile, String saveFile, ChannelSftp sftp) {  try {   sftp.cd(directory);   File file = new File(saveFile);   sftp.get(downloadFile, new FileOutputStream(file));   return true;  }  catch (FileNotFoundException e) {            e.printStackTrace();        } catch (SftpException e) {            e.printStackTrace();        }         return false; } 

  public void delete(String directory, String deleteFile, ChannelSftp sftp) {  try {   sftp.cd(directory);   sftp.rm(deleteFile);  } catch (Exception e) {   e.printStackTrace();  } }

  public Vector listFiles(String directory, ChannelSftp sftp) throws SftpException {  return sftp.ls(directory); }

 public static void main(String[] args) {  MySFTP sf = new MySFTP();  String host = "ip address";  int port = 22;  String username = "******";  String password = "*******";  String directory = "/home/develop/data-two/logs";//  String uploadFile = "D:\\weather\\sfpt";  String downloadFile = "2016-9-7_results.log";  String saveFile = "D:\\weather\\sfpt\\bb.log";//  String deleteFile = "delete.txt";  ChannelSftp sftp = sf.connect(host, port, username, password);//  sf.upload(directory, uploadFile, sftp);  boolean download = sf.download(directory, downloadFile, saveFile, sftp);  if (download) {   sftp.disconnect();   sftp.quit();  }//  sf.delete(directory, deleteFile, sftp);//  try {//   sftp.cd(directory);//   sftp.mkdir("ss");//   System.out.println("finished");//  } catch (Exception e) {//   e.printStackTrace();//  } }}