com.jcraft.jsch.session Java Examples

@Test
@SuppressWarnings("PMD.SignatureDeclareThrowsException")
public void shouldExecuteSuccessfullyWithoutAgentForwarding() throws Exception
{
    ServerConfiguration server = getDefaultServerConfiguration();
    JSch jSch = mock(JSch.class);
    whenNew(JSch.class).withNoArguments().thenReturn(jSch);
    Session session = mock(Session.class);
    when(jSch.getSession(server.getUsername(), server.getHost(), server.getPort())).thenReturn(session);
    ChannelExec channelExec = mockChannelOpening(session);
    SshOutput actual = new TestJSchExecutor().execute(server, COMMANDS);
    assertEquals(SSH_OUTPUT, actual);
    InOrder ordered = inOrder(jSch, session, channelExec);
    ordered.verify(jSch).addIdentity(IDENTITY_NAME, server.getPrivateKey().getBytes(StandardCharsets.UTF_8),
            server.getPublicKey().getBytes(StandardCharsets.UTF_8),
            server.getPassphrase().getBytes(StandardCharsets.UTF_8));
    verifyFullConnection(ordered, server, session, channelExec);
}
 

@Test
public void testWrite() throws Exception {
  termHandler = term -> {
    term.write("hello");
  };
  startShell();
  Session session = createSession("paulo", "secret", false);
  session.connect();
  Channel channel = session.openChannel("shell");
  channel.connect();
  Reader in = new InputStreamReader(channel.getInputStream());
  int count = 5;
  StringBuilder sb = new StringBuilder();
  while (count > 0) {
    int code = in.read();
    if (code == -1) {
      count = 0;
    } else {
      count--;
      sb.append((char) code);
    }
  }
  assertEquals("hello", sb.toString());
  channel.disconnect();
  session.disconnect();
}
 

private Session createSession(CredentialsProvider credentialsProvider,
                              FS fs, String user, final String pass, String host, int port,
                              final OpenSshConfig.Host hc) throws JSchException {
    final Session session = createSession(credentialsProvider, hc, user, host, port, fs);
    // We retry already in getSession() method. JSch must not retry
    // on its own.
    session.setConfig("MaxAuthTries", "1"); //$NON-NLS-1$ //$NON-NLS-2$
    if (pass != null)
        session.setPassword(pass);
    final String strictHostKeyCheckingPolicy = hc
            .getStrictHostKeyChecking();
    if (strictHostKeyCheckingPolicy != null)
        session.setConfig("StrictHostKeyChecking", //$NON-NLS-1$
                strictHostKeyCheckingPolicy);
    final String pauth = hc.getPreferredAuthentications();
    if (pauth != null)
        session.setConfig("PreferredAuthentications", pauth); //$NON-NLS-1$
    if (credentialsProvider != null && !(credentialsProvider instanceof PrivateKeyCredentialsProvider)
            && (!hc.isBatchMode() || !credentialsProvider.isInteractive())) {
        session.setUserInfo(new CredentialsProviderUserInfo(session,
                credentialsProvider));
    }
    configure(hc, session);
    return session;
}
 

@Test
@Ignore
public void testExecuteCommand3() throws Exception {
    // 鍵認証（パスフレーズあり）
    File privateKeyFile = new ClassPathResource(ClassUtils.addResourcePathToPackagePath(getClass(), "key02.pem"))
            .getFile();
    String privateKey = FileUtils.readFileToString(privateKeyFile, "UTF-8");

    Session session = JSchUtils.createSessionByPrivateKey("user01", privateKey, "passw0rd", "172.22.0.23");

    JSchResult result = JSchUtils.executeCommand(session, "env", "UTF-8");
    assertEquals(0, result.getExitStatus());

    result = JSchUtils.executeCommand(session, "ls -l /etc", "UTF-8");
    assertEquals(0, result.getExitStatus());

    session.disconnect();
}
 

/**
 * 直接从命令行上传文件
 * @param src_file 上传的原文件
 * @param remote_path 远程服务器的路径
 * @param objects ServerInfo对象列表
 */
public void commandlineUploadFile(String src_file,String remote_path,List<ServerInfo> objects){
    WriteLog writeLog = new WriteLog();
    SessionPool.setSftp_connection_pool(sessionHashMap);
    UploadFile.setWriteLog(writeLog);
    UploadFile.setSrc(src_file);
    UploadFile.setDst(remote_path);
    if (! remote_path.startsWith("/")){
        remote_path = "$HOME/" + remote_path;
    }
    HelpPrompt.printFileSizeAndRemotePath(src_file,remote_path);
    long start_time = System.currentTimeMillis();
    MultiThread multiThread = new MultiThread();
    multiThread.startMultiThread(objects,"sftp");
    HashMap<String, Session> sessions = SessionPool.getSftp_connection_pool();
    for (Session session : sessions.values()){
        session.disconnect();
    }
    sessionHashMap.clear();
    long end_time = System.currentTimeMillis();
    System.out.println();
    HelpPrompt.printExecuteTime(objects.size(),(end_time - start_time)/1000);
}
 

@Test
@SuppressWarnings("PMD.SignatureDeclareThrowsException")
public void shouldFailOnCommandExecutionError() throws Exception
{
    ServerConfiguration server = getDefaultServerConfiguration();
    server.setPublicKey(null);
    JSch jSch = mock(JSch.class);
    whenNew(JSch.class).withNoArguments().thenReturn(jSch);
    Session session = mock(Session.class);
    when(jSch.getSession(server.getUsername(), server.getHost(), server.getPort())).thenReturn(session);
    ChannelExec channelExec = mockChannelOpening(session);
    JSchException jSchException = new JSchException();
    CommandExecutionException exception = assertThrows(CommandExecutionException.class,
        () -> new TestJSchExecutor()
        {
            @Override
            protected SshOutput executeCommand(ServerConfiguration serverConfig, Commands commands,
                    ChannelExec channel) throws JSchException
            {
                throw jSchException;
            }
        }.execute(server, COMMANDS));
    assertEquals(jSchException, exception.getCause());
    InOrder ordered = inOrder(jSch, session, channelExec);
    verifyFullConnection(ordered, server, session, channelExec);
}
 

/**
 * For creating a JSCH session.
 * 
 * @param host
 *            the host
 * @return a JSCH session
 * @throws JSchException
 *             the jsch exception
 */
private Session createSession(CommandWritable.Command.SwitchedIdentity switchedIdentity, String host, CommandType commandType) throws JSchException {
	JSch jsch = new JSch();
	Session session = null;
	if(switchedIdentity.getPrivatePath() != null && !switchedIdentity.getPrivatePath().isEmpty()){
		jsch.addIdentity(switchedIdentity.getPrivatePath());	
	}
	java.util.Properties conf = new java.util.Properties();
	session = jsch.getSession(switchedIdentity.getUser(), host, RemotingConstants.TWENTY_TWO);
	if(switchedIdentity.getPasswd()!=null){
		try{
			session.setPassword(StringUtil.getPlain(switchedIdentity.getPasswd()));
		}catch(Exception e){
			LOGGER.error("Failed to Decrypt the password", e);
		}
	}
	conf.put(STRICT_HOST_KEY_CHECKING, "no");
	session.setConfig(conf);
    session.connect();
	LOGGER.debug("Session Established, for user ["+switchedIdentity.getUser()+"]"+":["+session.isConnected()+"]");
	return session;
}
 

@Test
public void testDeployServiceWithShiroAuthOptions(TestContext context) throws Exception {
  Async async = context.async();
  vertx.deployVerticle("service:io.vertx.ext.shell", new DeploymentOptions().setConfig(new JsonObject().put("sshOptions",
      new JsonObject().
          put("host", "localhost").
          put("port", 5000).
          put("keyPairOptions", new JsonObject().
              put("path", "src/test/resources/server-keystore.jks").
              put("password", "wibble")).
          put("authOptions", new JsonObject().put("provider", "shiro").put("config",
              new JsonObject().
                  put("properties_path", "classpath:test-auth.properties")))))
      , context.asyncAssertSuccess(v -> {
    async.complete();
  }));
  async.awaitSuccess(2000);
  Session session = createSession("paulo", "secret", false);
  session.connect();
  Channel channel = session.openChannel("shell");
  channel.connect();
  channel.disconnect();
  session.disconnect();
}
 

@Override
protected Session createSession(Host hc, String user, String host, int port, FS fs)
        throws JSchException {
    JSch jSch = getJSch(hc, fs);

    // assumption: identities from agent are always unencrypted
    final Collection<Identity> allUnencryptedIdentities = getIdentitiesFromAgentProxy();

    @SuppressWarnings("unchecked")
    Collection<Identity> identities = ((Collection<Identity>) jSch.getIdentityRepository().getIdentities());
    identities.stream()
            .filter(id -> !id.isEncrypted())
            .forEach(allUnencryptedIdentities::add);
    
    Session session = jSch.getSession(user, host, port);
    session.setIdentityRepository(new ReadOnlyIdentityRepository(allUnencryptedIdentities));
    return session;
}
 

/**
 * Creates a new Session.
 *
 * @return A Session, never null.
 */
static Session createSession(final GenericFileName rootName, final FileSystemOptions fileSystemOptions)
        throws FileSystemException {
    UserAuthenticationData authData = null;
    try {
        authData = UserAuthenticatorUtils.authenticate(fileSystemOptions, AUTHENTICATOR_TYPES);

        return SftpClientFactory.createConnection(rootName.getHostName(), rootName.getPort(),
                UserAuthenticatorUtils.getData(authData, UserAuthenticationData.USERNAME,
                        UserAuthenticatorUtils.toChar(rootName.getUserName())),
                UserAuthenticatorUtils.getData(authData, UserAuthenticationData.PASSWORD,
                        UserAuthenticatorUtils.toChar(rootName.getPassword())),
                fileSystemOptions);
    } catch (final Exception e) {
        throw new FileSystemException("vfs.provider.sftp/connect.error", rootName, e);
    } finally {
        UserAuthenticatorUtils.cleanup(authData);
    }
}
 

/**
 * Stops java application that needs to, this should be called when the user wants to manually stop the application
 * so that it kills the remote java process
 *
 * @param session
 * @param isRunningAsRoot
 * @param mainClass
 * @throws JSchException
 * @throws IOException
 */
public void forceStopJavaApplication(@Nullable Session session, @NotNull boolean isRunningAsRoot, @NotNull String mainClass) throws JSchException, IOException {
    if (session == null) {
        return;
    }
    String javaKillCmd = String.format("%s kill -9 $(ps -efww | grep \"%s\"| grep -v grep | tr -s \" \"| cut -d\" \" -f2)",
            isRunningAsRoot ? "sudo" : "", mainClass);
    Channel channel = session.openChannel("shell");

    OutputStream inputstream_for_the_channel = channel.getOutputStream();
    PrintStream commander = new PrintStream(inputstream_for_the_channel, true);

    channel.connect();

    commander.println(javaKillCmd);
    commander.close();
    channel.disconnect();
    session.disconnect();
}
 

/**
 * New transport callback for ssh-key authenticate credentials.
 *
 * @param identity
 * @return
 * @throws Exception
 * @see {@link TransportConfigCallback}
 */
private TransportConfigCallback newTransportConfigCallback(byte[] identity) throws Exception {
    return new TransportConfigCallback() {
        @Override
        public void configure(Transport transport) {
            SshTransport sshTransport = (SshTransport) transport;
            sshTransport.setSshSessionFactory(new JschConfigSessionFactory() {
                @Override
                protected void configure(OpenSshConfig.Host hc, Session session) {
                    session.setConfig("StrictHostKeyChecking", "no");
                    // session.setPort(2022);
                }

                @Override
                protected JSch createDefaultJSch(FS fs) throws JSchException {
                    JSch jsch = super.createDefaultJSch(fs);
                    jsch.removeAllIdentity();
                    // jsch.addIdentity("/Users/vjay/.ssh/id_rsa");
                    jsch.getIdentityRepository().add(identity);
                    return jsch;
                }
            });
        }
    };
}
 

/**
 * Executes <code>command</code> and returns the result. Use this method
 * when the command you are executing requires no input, writes only UTF-8
 * compatible text to STDOUT and/or STDERR, and you are comfortable with
 * buffering up all of that data in memory. Otherwise, use
 * {@link #open(String)}, which allows you to work with the underlying
 * streams.
 * 
 * @param command
 *            The command to execute
 * @return The resulting data
 * 
 * @throws JSchException
 *             If ssh execution fails
 * @throws IOException
 *             If unable to read the result data
 */
public ExecuteResult execute( String command ) throws JSchException, IOException {
    logger.debug( "executing {} on {}", command, sessionManager );
    Session session = sessionManager.getSession();

    ByteArrayOutputStream stdErr = new ByteArrayOutputStream();
    ByteArrayOutputStream stdOut = new ByteArrayOutputStream();
    int exitCode;
    ChannelExecWrapper channel = null;
    try {
        channel = new ChannelExecWrapper( session, command, null, stdOut, stdErr );
    }
    finally {
        exitCode = channel.close();
    }

    return new ExecuteResult( exitCode,
            new String( stdOut.toByteArray(), UTF8 ),
            new String( stdErr.toByteArray(), UTF8 ) );
}
 

/**
 * For creating a JSCH session.
 * 
 * @param host
 *            the host
 * @return a JSCH session
 * @throws JSchException
 *             the jsch exception
 */
public static Session createSession(CommandWritable.Command.SwitchedIdentity switchedIdentity, String host, CommandType commandType) throws JSchException {
	JSch jsch = new JSch();
	Session session = null;
	if(switchedIdentity.getPrivatePath() != null && !switchedIdentity.getPrivatePath().isEmpty()){
		jsch.addIdentity(switchedIdentity.getPrivatePath());	
	}
	java.util.Properties conf = new java.util.Properties();
	session = jsch.getSession(switchedIdentity.getUser(), host, RemotingConstants.TWENTY_TWO);
	conf.put(STRICT_HOST_KEY_CHECKING, "no");
	if(switchedIdentity.getPasswd()!=null){
		try {
			session.setPassword(StringUtil.getPlain(switchedIdentity.getPasswd()));
		} catch (Exception e) {
			LOGGER.error("Unable to get decrypted Password", e);
		}
	}
	session.setConfig(conf);
	return session;
}
 

private SshSessionFactory getSshSessionFactory(String remotePrivateKey, final Path tempKey) {
    try {

        Files.write(tempKey, remotePrivateKey.getBytes());
        SshSessionFactory sshSessionFactory = new JschConfigSessionFactory() {
            @Override
            protected void configure(OpenSshConfig.Host hc, Session session) {
                Properties config = new Properties();
                config.put("StrictHostKeyChecking", "no");
                session.setConfig(config);
            }

            @Override
            protected JSch createDefaultJSch(FS fs) throws JSchException {
                JSch defaultJSch = super.createDefaultJSch(fs);
                defaultJSch.addIdentity(tempKey.toAbsolutePath().toString());
                return defaultJSch;
            }
        };
        return sshSessionFactory;
    } catch (IOException e) {
        logger.error("Failed to create private key for SSH connection.", e);
    }
    return null;
}
 

private boolean executeSSH(){ 
	//get deployment descriptor, instead of this hard coded.
	// or execute a script on the target machine which download artifact from nexus
       String command ="nohup java -jar -Dserver.port=8091 ./work/codebox/chapter6/chapter6.search/target/search-1.0.jar &";
      try{	
   	   System.out.println("Executing "+ command);
          java.util.Properties config = new java.util.Properties(); 
          config.put("StrictHostKeyChecking", "no");
          JSch jsch = new JSch();
          Session session=jsch.getSession("rajeshrv", "localhost", 22);
          session.setPassword("rajeshrv");
          
          session.setConfig(config);
          session.connect();
          System.out.println("Connected");
           
          ChannelExec channelExec = (ChannelExec)session.openChannel("exec");
          InputStream in = channelExec.getInputStream();
          channelExec.setCommand(command);
          channelExec.connect();
         
          BufferedReader reader = new BufferedReader(new InputStreamReader(in));
          String line;
          int index = 0;

          while ((line = reader.readLine()) != null) {
              System.out.println(++index + " : " + line);
          }
          channelExec.disconnect();
          session.disconnect();

          System.out.println("Done!");

      }catch(Exception e){
          e.printStackTrace();
          return false;
      }
	
	return true;
}
 

@Override
public BuildFinishedStatus runProcess() {
  JSch.setLogger(new JSchBuildLogger(myLogger));
  Session session = null;
  try {
    session = myProvider.getSession();
    return executeCommand(session, myPty, myCommands);
  } catch (JSchException e) {
    logBuildProblem(myLogger, e.getMessage());
    LOG.warnAndDebugDetails("Error executing SSH command", e);
    return BuildFinishedStatus.FINISHED_FAILED;
  } finally {
    if (session != null) {
      session.disconnect();
    }
  }
}
 

/**
 * This method execute the given command over SSH
 * 
 * @param session
 * @param command
 *            Command to be executed
 * @throws JSchException
 * @throws IOException
 * @throws InterruptedException
 */
static String executeCommand(Session session, String command) throws JSchException, IOException {
	InputStream in = null;
	Channel channel = null;
	String msg = null;
	try {
		channel = session.openChannel("exec");
		((ChannelExec) channel).setCommand(command);
		channel.setInputStream(null);
		((ChannelExec) channel).setErrStream(System.err);
		in = channel.getInputStream();
		channel.connect();
		msg = validateCommandExecution(channel, in);
	} catch (InterruptedException e) {
		CONSOLE_LOGGER.error(e);
	} finally {
		if (in != null) {
			in.close();
		}
		if (channel != null) {
			channel.disconnect();
		}
	}
	return msg;
}
 

/**
 * Handle cpu usage command.
 *
 * @param commandWritable the command writable
 * @param command the command
 * @return the object
 * @throws IOException Signals that an I/O exception has occurred.
 */
private Object handleCpuUsageCommand(CommandWritable commandWritable, Command command) throws IOException {
	JschExecutor jschExecutor = new JschExecutor();
	Session session = jschExecutor.getSession(commandWritable, command);
	ChannelReaderResponse channelReaderResponse = jschExecutor.executeResponsiveShellJsch(session, command);
	String lineBeforeLogout = "";
	try (BufferedReader br = (BufferedReader)channelReaderResponse.getReader()) {
		for (String line = br.readLine(); br != null && line != null; line = br.readLine()) {
			if(!line.equals(LOGOUT)) {
				lineBeforeLogout = line;
			}
		}
	} catch (IOException e) {
		LOGGER.error(e.getMessage(), e);
	}
	jschExecutor.closeChannel(channelReaderResponse.getChannel());
	jschExecutor.closeSession(session);
	return lineBeforeLogout;
}
 

/**
 * Creates a new session with a given ssh access information.
 *
 * @param sshInfo information to ssh to the remote server
 * @return ssh session, or null
 */
public static Session connect(SshAccessInfo sshInfo) {
    Session session;

    try {
        JSch jsch = new JSch();
        jsch.addIdentity(sshInfo.privateKey());

        session = jsch.getSession(sshInfo.user(),
                sshInfo.remoteIp().toString(),
                sshInfo.port().toInt());
        session.setConfig(STRICT_HOST_CHECKING, DEFAULT_STRICT_HOST_CHECKING);
        session.connect(DEFAULT_SESSION_TIMEOUT);

    } catch (JSchException e) {
        log.warn("Failed to connect to {}", sshInfo.toString(), e);
        session = authUserPwd(sshInfo);
    }
    return session;
}
 

void sshCall(String username, String password, SshExecutor executor, String channelType) {
    try {
        Session session = openSession(username, password);
        Channel channel = session.openChannel(channelType);
        PipedInputStream pis = new PipedInputStream();
        PipedOutputStream pos = new PipedOutputStream();
        channel.setInputStream(new PipedInputStream(pos));
        channel.setOutputStream(new PipedOutputStream(pis));
        channel.connect();
        try {
            executor.execute(pis, pos);
        } finally {
            pis.close();
            pos.close();
            channel.disconnect();
            session.disconnect();
        }
    } catch (JSchException | IOException ex) {
        fail(ex.toString());
    }
}
 

@Test
public void testKeymapFromFilesystem() throws Exception {
  URL url = TermServer.class.getResource(SSHTermOptions.DEFAULT_INPUTRC);
  File f = new File(url.toURI());
  termHandler = Term::close;
  startShell(new SSHTermOptions().setIntputrc(f.getAbsolutePath()).setPort(5000).setHost("localhost").setKeyPairOptions(
    new JksOptions().setPath("src/test/resources/server-keystore.jks").setPassword("wibble")).
    setAuthOptions(new JsonObject()
      .put("provider", "shiro")
      .put("type", "PROPERTIES")
      .put("config",
        new JsonObject().put("properties_path", "classpath:test-auth.properties"))));
  Session session = createSession("paulo", "secret", false);
  session.connect();
  Channel channel = session.openChannel("shell");
  channel.connect();
}
 

/**
 * Returns a new session created with given {@code host}, {@code port}, {@code username}, {@code
 * password}, {@code privateKey} and optional {@code passphrase}.
 *
 * @throws JSchException if {@code username} or {@code host} are invalid, or if {@code passphrase}
 *     is not right.
 */
public static Session createSession(
    String host, int port, String username, String password, String privateKey, String passphrase)
    throws JSchException {
  JSch jsch = new JSch();

  if (privateKey != null) {
    jsch.addIdentity(privateKey, passphrase);
  }

  Session session = jsch.getSession(username, host, port);
  session.setPassword(password);
  session.setConfig("StrictHostKeyChecking", "no");

  return session;
}
 

/**
 * 直接从命令行执行命令
 * @param objects ServerInfo对象列表
 * @param command 要执行的命令
 */
public void commandlineExec(List<ServerInfo> objects,String command){
    long start_time = System.currentTimeMillis();
    WriteLog writeLog = new WriteLog();
    SessionPool.setSsh_connection_pool(sessionHashMap);
    writeLog.writeCommand(command);
    ExecCommand.setCommand(command);
    ExecCommand.setWriteLog(writeLog);
    MultiThread multiThread = new MultiThread();
    multiThread.startMultiThread(objects,"ssh");
    HashMap<String, Session> sessions = SessionPool.getSsh_connection_pool();
    for (Session session : sessions.values()){
        session.disconnect();
    }
    sessionHashMap.clear();
    long end_time = System.currentTimeMillis();
    HelpPrompt.printExecuteTime(objects.size(),(end_time - start_time)/1000);
}
 

private static List<String> getPublicKeys() throws Exception {
    return new JschConfigSessionFactory() {
        @Override
        protected void configure(OpenSshConfig.Host hc, Session session) {
        }
        List<String> getPublicKeys() throws Exception {
            JSch jSch = createDefaultJSch(FS.DETECTED);
            List<String> keys = new ArrayList<>();
            for (Object o : jSch.getIdentityRepository().getIdentities()) {
                Identity i = (Identity) o;
                KeyPair keyPair = KeyPair.load(jSch, i.getName(), null);
                StringBuilder sb = new StringBuilder();
                try (StringBuilderWriter sbw = new StringBuilderWriter(sb);
                     OutputStream os = new WriterOutputStream(sbw, "UTF-8")) {
                    keyPair.writePublicKey(os, keyPair.getPublicKeyComment());
                } finally {
                    keyPair.dispose();
                }
                keys.add(sb.toString().trim());
            }
            return keys;
        }
    }.getPublicKeys();
}
 

public static void main(String[] args) throws JSchException, IOException {
    JSch jSch = new JSch();
    Session session = jSch.getSession(System.getenv("USER"), "localhost");
    Properties config = new Properties();
    config.put("StrictHostKeyChecking", "no");
    jSch.addIdentity(System.getProperty("user.home") + "/.ssh/id_rsa");
    session.setConfig(config);
    session.connect();
    Channel channel = session.openChannel("shell");
    channel.connect();

    Expect expect = new ExpectBuilder()
            .withOutput(channel.getOutputStream())
            .withInputs(channel.getInputStream(), channel.getExtInputStream())
            .build();
    try {
        expect.expect(contains("$"));
        expect.sendLine("pwd");
        System.out.println(
                "pwd1:" + expect.expect(times(2, contains("\n")))
                        .getResults()
                        .get(1)
                        .getBefore());
        expect.sendLine("pwd");
        // a regexp which captures the output of pwd
        System.out.println("pwd2:" + expect.expect(regexp("(?m)\\n([^\\n]*)\\n")).group(1));
        expect.expect(contains("$"));
        expect.sendLine("ls -l");
        // skipping the echo command
        expect.expect(times(2, contains("\n")));
        // getting the output of ls
        System.out.println(expect.expect(regexp(".*\\$")).getBefore().trim());
        expect.sendLine("exit");
    } finally {
        expect.close();
        channel.disconnect();
        session.disconnect();
    }
}
 

private Session newJSchSession() throws JSchException {
    JSch jsch = new JSch();
    if (identityPath != null) {
        jsch.addIdentity(identityPath);
    }

    Session session = jsch.getSession(username, hostname, 22);
    if (password != null) {
        session.setPassword(password);
    }
    session.setConfig("StrictHostKeyChecking", "no");
    return session;
}
 

/**
 * Returns whether the interface has IP address.
 * @param session SSH session
 * @param ifname interface name
 * @param addr network address
 * @return whether the interface has IP address
 */
public static boolean hasIpAddrOnInterface(Session session, String ifname, NetworkAddress addr) {

    Set<NetworkAddress> phyBrIps = getIpAddrOfInterface(session, ifname);

    return phyBrIps.stream()
            .anyMatch(ip -> addr.ip().equals(ip.ip()));
}
 

public static void main(String[] args) throws GitAPIException {
    Git.cloneRepository()
            .setURI("[email protected]:jiangzeyin/test.git")
            .setDirectory(new File("D:\\test\\gitssh"))
            .setTransportConfigCallback(new TransportConfigCallback() {
                @Override
                public void configure(Transport transport) {
                    SshTransport sshTransport = (SshTransport) transport;
                    sshTransport.setSshSessionFactory(new JschConfigSessionFactory() {
                        @Override
                        protected void configure(OpenSshConfig.Host hc, Session session) {
                            session.setConfig("StrictHostKeyChecking", "no");
                            session.setPassword("");
                        }

                        @Override
                        protected JSch createDefaultJSch(FS fs) throws JSchException {
                            JSch defaultJSch = super.createDefaultJSch(fs);

                            defaultJSch.addIdentity("C:\\Users\\Colorful\\.ssh\\id_rsa.pub");
                            return defaultJSch;
                        }

                    });
                }
            })
            .call();
}
 

private boolean executeSSH(){ 
	//get deployment descriptor, instead of this hard coded.
	// or execute a script on the target machine which download artifact from nexus
       String command ="nohup java -jar -Dserver.port=8091 ./work/codebox/chapter6/chapter6.search/target/search-1.0.jar &";
      try{	
   	   System.out.println("Executing "+ command);
          java.util.Properties config = new java.util.Properties(); 
          config.put("StrictHostKeyChecking", "no");
          JSch jsch = new JSch();
          Session session=jsch.getSession("rajeshrv", "localhost", 22);
          session.setPassword("rajeshrv");
          
          session.setConfig(config);
          session.connect();
          System.out.println("Connected");
           
          ChannelExec channelExec = (ChannelExec)session.openChannel("exec");
          InputStream in = channelExec.getInputStream();
          channelExec.setCommand(command);
          channelExec.connect();
         
          BufferedReader reader = new BufferedReader(new InputStreamReader(in));
          String line;
          int index = 0;

          while ((line = reader.readLine()) != null) {
              System.out.println(++index + " : " + line);
          }
          channelExec.disconnect();
          session.disconnect();

          System.out.println("Done!");

      }catch(Exception e){
          e.printStackTrace();
          return false;
      }
	
	return true;
}