Java Session.openChannel方法代码示例

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
public static void fileFetch(String host, String user, String keyLocation, String sourceDir, String destDir) {
    JSch jsch = new JSch();
    Session session = null;
    try {
        // set up session
        session = jsch.getSession(user,host);
        // use private key instead of username/password
        session.setConfig(
                "PreferredAuthentications",
                "publickey,gssapi-with-mic,keyboard-interactive,password");
        jsch.addIdentity(keyLocation);
        java.util.Properties config = new java.util.Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);
        session.connect();

        // copy remote log file to localhost.
        ChannelSftp channelSftp = (ChannelSftp) session.openChannel("sftp");
        channelSftp.connect();
        channelSftp.get(sourceDir, destDir);
        channelSftp.exit();

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        session.disconnect();
    }
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
/**
 * Executes a given command. It opens exec channel for the command and closes
 * the channel when it's done.
 *
 * @param session ssh connection to a remote server
 * @param command command to execute
 * @return command output string if the command succeeds, or null
 */
private static String executeCommand(Session session, String command) {
    if (session == null || !session.isConnected()) {
        return null;
    }

    log.trace("Execute command {} to {}", command, session.getHost());

    try {
        Channel channel = session.openChannel("exec");
        ((ChannelExec) channel).setCommand(command);
        channel.setInputStream(null);
        InputStream output = channel.getInputStream();

        channel.connect();
        String result = CharStreams.toString(new InputStreamReader(output));
        channel.disconnect();

        log.trace("Result of command {} on {}: {}", command, session.getHost(), result);

        return result;
    } catch (JSchException | IOException e) {
        log.error("Failed to execute command {} on {} due to {}", command, session.getHost(), e.toString());
        return null;
    }
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
@Test
public void testTestCommand() throws JSchException, IOException {
    JSch jsch = new JSch();
    Session session = jsch.getSession("admin", "localhost", properties.getShell().getPort());
    jsch.addIdentity("src/test/resources/id_rsa");
    Properties config = new Properties();
    config.put("StrictHostKeyChecking", "no");
    session.setConfig(config);
    session.connect();
    ChannelShell channel = (ChannelShell) session.openChannel("shell");
    PipedInputStream pis = new PipedInputStream();
    PipedOutputStream pos = new PipedOutputStream();
    channel.setInputStream(new PipedInputStream(pos));
    channel.setOutputStream(new PipedOutputStream(pis));
    channel.connect();
    pos.write("test run bob\r".getBytes(StandardCharsets.UTF_8));
    pos.flush();
    verifyResponse(pis, "test run bob");
    pis.close();
    pos.close();
    channel.disconnect();
    session.disconnect();
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
protected void sshCall(String username, String password, SshExecutor executor, String channelType) {
    try {
        JSch jsch = new JSch();
        Session session = jsch.getSession(username, props.getShell().getHost(), props.getShell().getPort());
        session.setPassword(password);
        Properties config = new Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);
        session.connect();
        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());
    }
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
public static String connectAndExecute(String user, String host, String password, String command1) {
	String CommandOutput = null;
	try {

		java.util.Properties config = new java.util.Properties();
		config.put("StrictHostKeyChecking", "no");
		JSch jsch = new JSch();

		Session session = jsch.getSession(user, host, 22);
		session.setPassword(password);
		session.setConfig(config);
		session.connect();
		// System.out.println("Connected");

		Channel channel = session.openChannel("exec");
		((ChannelExec) channel).setCommand(command1);
		channel.setInputStream(null);
		((ChannelExec) channel).setErrStream(System.err);

		InputStream in = channel.getInputStream();

		channel.connect();
		byte[] tmp = new byte[1024];
		while (true) {
			while (in.available() > 0) {
				int i = in.read(tmp, 0, 1024);

				if (i < 0)
					break;
				// System.out.print(new String(tmp, 0, i));
				CommandOutput = new String(tmp, 0, i);
			}

			if (channel.isClosed()) {
				// System.out.println("exit-status: " +
				// channel.getExitStatus());
				break;
			}
			try {
				Thread.sleep(1000);
			} catch (Exception ee) {
			}
		}
		channel.disconnect();
		session.disconnect();
		// System.out.println("DONE");

	} catch (Exception e) {
		e.printStackTrace();
	}
	return CommandOutput;

}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
ChannelSftp init(String filename) throws JSchException, UnsupportedEncodingException {
	jsch = new JSch();
	ConnectionInfo ci = splitStringToConnectionInfo(filename);

	Session session = jsch.getSession(ci.username, ci.host, ci.port);
	UserInfo ui = new SftpUserInfo(ci.password);
	session.setUserInfo(ui);

	session.connect();

	Channel channel = session.openChannel("sftp");
	channel.connect();
	ChannelSftp c = (ChannelSftp) channel;

	logDebug("success: init Sftp");
	return c;

}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
/**
 * 
 * Scp file from remote server
 * 
 * @param host
 * @param user
 * @param password
 * @param remoteFile
 * @param localFile
 * @throws JSchException 
 * @throws IOException 
 */
public void scpFileFromRemoteServer(String host, String user, String password, String remoteFile, String localFile) throws JSchException, IOException {
	
	String prefix = null;
	if (new File(localFile).isDirectory()) {
		prefix = localFile + File.separator;
	}

	JSch jsch = new JSch();
	Session session = jsch.getSession(user, host, 22);

	// username and password will be given via UserInfo interface.
	UserInfo userInfo = new UserInformation(password);
	session.setUserInfo(userInfo);
	session.connect();

	// exec 'scp -f remoteFile' remotely
	String command = "scp -f " + remoteFile;
	Channel channel = session.openChannel("exec");
	((ChannelExec) channel).setCommand(command);

	// get I/O streams for remote scp
	OutputStream out = channel.getOutputStream();
	InputStream in = channel.getInputStream();

	channel.connect();

	byte[] buf = new byte[1024];

	// send '\0'
	buf[0] = 0;
	out.write(buf, 0, 1);
	out.flush();
	
	readRemoteFileAndWriteToLocalFile(localFile, prefix, out, in, buf);

	session.disconnect();		
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
/**
 * @param host
 * @param user
 * @param pwd
 * @param remoteFile
 */
public void deleteFile(String host, String user, String pwd,
		String remoteFile) {
	try {
		JSch ssh = new JSch();
		Session session = ssh.getSession(user, host, 22);

		java.util.Properties config = new java.util.Properties();
		config.put("StrictHostKeyChecking", "no");
		session.setConfig(config);
		session.setPassword(pwd);

		session.connect();
		Channel channel = session.openChannel("exec");
		channel.connect();

		String command = "rm -rf " + remoteFile;
		System.out.println("command: " + command);
		// ((ChannelExec) channel).setCommand(command);

		channel.disconnect();
		session.disconnect();
	} catch (JSchException e) {
		System.out.println(e.getMessage().toString());
		e.printStackTrace();
	}
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
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;
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
public static void executeCommandNoResponse( Session sessionObj, String command )
    throws JSchException, IOException
{
    logger.debug( "Starting to execute command [" + maskedPasswordString( command ) + "]" );

    if ( sessionObj != null && command != null && !"".equals( command ) )
    {
        Channel channel = null;

        try
        {
            channel = sessionObj.openChannel( "exec" );
            ( (ChannelExec) channel ).setCommand( command );
            channel.setInputStream( null );
            ( (ChannelExec) channel ).setErrStream( System.err );
            channel.getInputStream();
            channel.connect();
            /* We do not care about whether the command succeeds or not */

            if ( channel.isClosed() && channel.getExitStatus() != 0 )
            {
                logger.debug( "Command exited with error code " + channel.getExitStatus() );
            }
        }
        catch ( Exception e )
        {
            logger.error( "Received exception during command execution", e );
        }
        finally
        {
            if ( channel != null && channel.isConnected() )
            {
                channel.disconnect();
            }
            logger.debug( "End of execution of command [" + maskedPasswordString( command ) + "]" );
        }
    }
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
public static void executeCommandNoResponse( Session sessionObj, String command )
    throws JSchException, IOException
{
    logger.debug( "Starting to execute command [" + command + "]" );

    if ( sessionObj != null && command != null && !"".equals( command ) )
    {
        Channel channel = null;

        try
        {
            channel = sessionObj.openChannel( "exec" );
            ( (ChannelExec) channel ).setCommand( command );
            channel.setInputStream( null );
            ( (ChannelExec) channel ).setErrStream( System.err );
            channel.getInputStream();
            channel.connect();
            /* We do not care about whether the command succeeds or not */

            if ( channel.isClosed() && channel.getExitStatus() != 0 )
            {
                logger.debug( "Command exited with error code " + channel.getExitStatus() );
            }
        }
        catch ( Exception e )
        {
            logger.error( "Received exception during command execution", e );
        }
        finally
        {
            if ( channel != null && channel.isConnected() )
            {
                channel.disconnect();
            }
            logger.debug( "End of execution of command [" + command + "]" );
        }
    }
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
public int executeCommand(boolean setPty, String command, CommandResultConsumer consumer) {
	Session ssh = SshUtil.getInstance().createSshSession(username, hostname);
	int resultCode = 255;

	try {
		ssh.connect();
		LOGGER.debug("Connected to ssh console");
		ChannelExec channel = (ChannelExec) ssh.openChannel("exec");
		channel.setPty(setPty);
		channel.setCommand(command);
		channel.setInputStream(null);
		channel.setOutputStream(System.err);

		LOGGER.debug("Executing command: '{}'", command);
		channel.connect();
		try {
			if (consumer != null) {
				consumer.consume(channel.getInputStream());
			}
		} catch (IOException ex) {
			throw new RuntimeException("Unable to read console output", ex);
		} finally {
			channel.disconnect();
		}
		resultCode = channel.getExitStatus();
	} catch (JSchException x) {
		LOGGER.error("Error SSH to " + username + "@" + hostname, x);
	} finally {
		ssh.disconnect();
	}

	return resultCode;
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
public StringPair executeCmd(String USERNAME,String PASSWORD,String host,String command)
{
	StringPair result = new StringPair();
	try
	{
		JSch jsch = new JSch();
		Session session = jsch.getSession(USERNAME, host, port);
		session.setConfig("StrictHostKeyChecking", "no");
		session.setPassword(PASSWORD);
		session.connect();
		ChannelExec channelExec = (ChannelExec)session.openChannel("exec");
		InputStream in = channelExec.getInputStream();
		channelExec.setCommand(command);
		channelExec.connect();
		BufferedReader reader = new BufferedReader(new InputStreamReader(in));
		//while((line = reader.readLine()) != null)
		result.hostName = reader.readLine();
		result.ip=reader.readLine();
		reader.close();
		int exitStatus = channelExec.getExitStatus();
		channelExec.disconnect();
		session.disconnect();
		if(exitStatus < 0){
			System.out.println("Done, but exit status not set!");
		}
		else if(exitStatus > 0){
			System.out.println("Done, but with error!");
		}
		else{
			System.out.println("Done!");
		}
		return result;
	}
	catch(Exception e)
	{
		System.err.println("Error: " + e);
		return result;
	}
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
@Override
public Channel create(final ChannelSessionKey key) throws Exception {
    Session session;
    synchronized (sessionMap) {
        session = sessionMap.get(key);
        if (session == null || !session.isConnected()) {
            session = prepareSession(key.remoteSystemConnection);
            session.connect();
            sessionMap.put(key, session);
            LOGGER.debug("session {} created and connected!", key);
        }
    }
    return session.openChannel(key.channelType.getChannelType());
}
 

import com.jcraft.jsch.Session; //导入方法依赖的package包/类
protected Channel openExecChannel(final ProcessContext context, final Session session, final String command) throws JSchException {
    ChannelExec channel = (ChannelExec) session.openChannel("exec");
    channel.setCommand(command);

    session.setTimeout(context.getProperty(DATA_TIMEOUT).asTimePeriod(TimeUnit.MILLISECONDS).intValue());
    if (!context.getProperty(USE_KEEPALIVE_ON_TIMEOUT).asBoolean()) {
        session.setServerAliveCountMax(0); // do not send keepalive message on SocketTimeoutException
    }

    return channel;
}