Java Channel.disconnect方法代码示例

import com.jcraft.jsch.Channel; //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.Channel; //导入方法依赖的package包/类
@SuppressWarnings("unchecked")
public static Vector<LsEntry> getRemoteFileList(String user, String password, String addr, int port, String cwd) throws JSchException, 
	SftpException, Exception {
	
	Session session = getSession(user, password, addr, port);	
	Vector<LsEntry> lsVec=null;
	Channel channel = session.openChannel("sftp");
	channel.connect();
	ChannelSftp sftpChannel = (ChannelSftp) channel;
	try {
		lsVec=(Vector<LsEntry>)sftpChannel.ls(cwd); //sftpChannel.lpwd()
	} catch (Exception e) {
		e.printStackTrace();
		throw e;
	} finally {
		sftpChannel.exit();
		channel.disconnect();
		session.disconnect();			
	}		
	return lsVec;		
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
/**
 * 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();
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
@Override
public boolean rename(String newName){
    Channel channel = null;
    try {
         channel = SFTPSession.getInstance().getSFTPChannel(mUri);
        ((ChannelSftp)channel).rename(mUri.getPath(), new File(new File(mUri.getPath()).getParentFile(), newName).getAbsolutePath());
        channel.disconnect();
        return true;
    } catch (Exception e) {
        e.printStackTrace();
    }finally {
        if(channel!=null&&channel.isConnected())
            channel.disconnect();
    }
    return false;
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
@Override
public boolean move(Uri uri) {
    if(!mUri.getScheme().equals(uri.getScheme())|| !mUri.getHost().equals(uri.getHost())||mUri.getPort()!=uri.getPort())
        return false;
    Channel channel = null;
    try {
        channel = SFTPSession.getInstance().getSFTPChannel(mUri);
        ((ChannelSftp)channel).rename(mUri.getPath(),uri.getPath());
        channel.disconnect();
        return true;
    } catch (Exception e) {
        e.printStackTrace();
    }finally {
        if(channel!=null&&channel.isConnected())
            channel.disconnect();
    }
    return false;
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
@Override
public boolean exists() {
    Channel channel = null;
    try {
        channel = SFTPSession.getInstance().getSFTPChannel(mUri);
        SftpATTRS attrs =  ((ChannelSftp)channel).stat(mUri.getPath());
        channel.disconnect();
        return attrs !=null;
    } catch (Exception e) {
        if(channel!=null&&channel.isConnected())
            channel.disconnect();
        e.printStackTrace();
    }finally {
        if(channel!=null&&channel.isConnected())
            channel.disconnect();
    }
    return false;
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
public void executeCommand(final String command) throws IOException { // Cliente SSH final
    JSch jsch = new JSch();
    Properties props = new Properties();
    props.put("StrictHostKeyChecking", "no");
    try {
        Session session = jsch.getSession(user, host, 22);
        session.setConfig(props);
        session.setPassword(password);
        session.connect();
        java.util.logging.Logger.getLogger(RemoteShell.class.getName())
                .log(Level.INFO, session.getServerVersion());

        Channel channel = session.openChannel("exec");
        ((ChannelExec) channel).setCommand(command);
        // Daqui para baixo é somente para imprimir a saida
        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));
            }
            if (channel.isClosed()) {
                if (in.available() > 0) {
                    continue;
                }
                System.out
                        .println("exit-status: " + channel.getExitStatus());
                break;
            }
            try {
                Thread.sleep(1000);
            } catch (Exception ee) {
            }
        }
        channel.disconnect();
        session.disconnect();

    } catch (JSchException ex) {
        java.util.logging.Logger.getLogger(RemoteShell.class.getName())
                .log(Level.SEVERE, null, ex);
    }
}
 

import com.jcraft.jsch.Channel; //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.Channel; //导入方法依赖的package包/类
/**
 * 本地檔案放到遠端SFTP上
 * 	
 * @param user
 * @param password
 * @param addr
 * @param port
 * @param localFile
 * @param remoteFile
 * @throws JSchException
 * @throws SftpException
 * @throws Exception
 */
public static void put(String user, String password, String addr, int port,
		List<String> localFile, List<String> remoteFile) throws JSchException, SftpException, Exception {
	
	Session session = getSession(user, password, addr, port);	
	Channel channel = session.openChannel("sftp");
	channel.connect();
	ChannelSftp sftpChannel = (ChannelSftp) channel;		
	try {
		for (int i=0; i<localFile.size(); i++) {
			String rf=remoteFile.get(i);
			String lf=localFile.get(i);
			logger.info("put local file: " + lf + " write to " + addr + " :" + rf );
			sftpChannel.put(lf, rf);
			logger.info("success write to " + addr + " :" + rf);
		}
	} catch (Exception e) {
		e.printStackTrace();
		throw e;
	} finally {
		sftpChannel.exit();
		channel.disconnect();
		session.disconnect();				
	}		
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
@Test
public void testRead(TestContext context) throws Exception {
  Async async = context.async();
  termHandler = term -> {
    term.stdinHandler(s -> {
      context.assertEquals("hello", s);
      async.complete();
    });
  };
  startShell();
  Session session = createSession("paulo", "secret", false);
  session.connect();
  Channel channel = session.openChannel("shell");
  channel.connect();
  OutputStream out = channel.getOutputStream();
  out.write("hello".getBytes());
  out.flush();
  channel.disconnect();
  session.disconnect();
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
@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();
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
private void doSingleTransfer() throws IOException, JSchException {
    StringBuilder sb = new StringBuilder("scp -t ");
    if (getPreserveLastModified()) {
        sb.append("-p ");
    }
    if (getCompressed()) {
        sb.append("-C ");
    }
    sb.append(remotePath);
    final String cmd = sb.toString();
    final Channel channel = openExecChannel(cmd);
    try {
        final OutputStream out = channel.getOutputStream();
        final InputStream in = channel.getInputStream();

        channel.connect();

        waitForAck(in);
        sendFileToRemote(localFile, in, out);
    } finally {
        if (channel != null) {
            channel.disconnect();
        }
    }
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
private void doMultipleTransfer() throws IOException, JSchException {
    StringBuilder sb = new StringBuilder("scp -r -d -t ");
    if (getPreserveLastModified()) {
        sb.append("-p ");
    }
    if (getCompressed()) {
        sb.append("-C ");
    }
    sb.append(remotePath);
    final Channel channel = openExecChannel(sb.toString());
    try {
        final OutputStream out = channel.getOutputStream();
        final InputStream in = channel.getInputStream();

        channel.connect();

        waitForAck(in);
        for (Directory current : directoryList) {
            sendDirectory(current, in, out);
        }
    } finally {
        if (channel != null) {
            channel.disconnect();
        }
    }
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
/**
 * Gets the list of partitions on the disk.
 * 
 * @param session
 *            the Session
 * @return the list of partitions on the disk
 * @throws JSchException
 *             the j sch exception
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
private List<DiskPartitionInfo> getPartitionStats(Session session) throws JSchException, IOException {

	Channel channel = getChannel(session, PARTITION_LIST_COMMAND);
	InputStream in = null;
	List<DiskPartitionInfo> partitions = null;

	try {
		in = channel.getInputStream();
		partitions = new ArrayList<DiskPartitionInfo>();
		ResultParser resultParser = new ResultParser();
		resultParser.parseDiskPartitionResult(in, partitions);
	} finally {
		if (in != null) {
			in.close();
		}
		channel.disconnect();
	}
	getVmStatsForPartition(session, partitions);
	return partitions;
}
 

import com.jcraft.jsch.Channel; //导入方法依赖的package包/类
/**
 * Returns the network latency between two nodes.
 * 
 * @param session
 *            the Session to node-1
 * @param node2
 *            the node2
 * @return the network latency
 * @throws JSchException
 *             the j sch exception
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
private float getNetworkLatency(Session session, String node2) throws JSchException, IOException {

	Channel channel = getChannel(session, NETWORK_LATENCY_COMMAND + " " + node2);
	InputStream in = null;
	float latency = 0.0f;
	try {
		in = channel.getInputStream();
		ResultParser resultParser = new ResultParser();
		latency = resultParser.parseNetworkLatencyResult(in);
	} finally {
		if (in != null) {
			in.close();
		}
		channel.disconnect();
	}

	return latency;
}