Example usage for javax.jms QueueSession createMessage

Introduction

In this page you can find the example usage for javax.jms QueueSession createMessage.

Prototype

Message createMessage() throws JMSException;

Source Link

Document

Creates a Message object.

Usage

From source file:io.datalayer.activemq.producer.SimpleQueueSender.java

/**
 * Main method.//from w ww  . j  a  v a2 s.  c  o  m
 * 
 * @param args the queue used by the example and, optionally, the number of
 *                messages to send
 */
public static void main(String... args) {
    String queueName = null;
    Context jndiContext = null;
    QueueConnectionFactory queueConnectionFactory = null;
    QueueConnection queueConnection = null;
    QueueSession queueSession = null;
    Queue queue = null;
    QueueSender queueSender = null;
    TextMessage message = null;
    final int numMsgs;

    if ((args.length < 1) || (args.length > 2)) {
        LOG.info("Usage: java SimpleQueueSender " + "<queue-name> [<number-of-messages>]");
        System.exit(1);
    }
    queueName = args[0];
    LOG.info("Queue name is " + queueName);
    if (args.length == 2) {
        numMsgs = (new Integer(args[1])).intValue();
    } else {
        numMsgs = 1;
    }

    /*
     * Create a JNDI API InitialContext object if none exists yet.
     */
    try {
        jndiContext = new InitialContext();
    } catch (NamingException e) {
        LOG.info("Could not create JNDI API context: " + e.toString());
        System.exit(1);
    }

    /*
     * Look up connection factory and queue. If either does not exist, exit.
     */
    try {
        queueConnectionFactory = (QueueConnectionFactory) jndiContext.lookup("QueueConnectionFactory");
        queue = (Queue) jndiContext.lookup(queueName);
    } catch (NamingException e) {
        LOG.info("JNDI API lookup failed: " + e);
        System.exit(1);
    }

    /*
     * Create connection. Create session from connection; false means
     * session is not transacted. Create sender and text message. Send
     * messages, varying text slightly. Send end-of-messages message.
     * Finally, close connection.
     */
    try {
        queueConnection = queueConnectionFactory.createQueueConnection();
        queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
        queueSender = queueSession.createSender(queue);
        message = queueSession.createTextMessage();
        for (int i = 0; i < numMsgs; i++) {
            message.setText("This is message " + (i + 1));
            LOG.info("Sending message: " + message.getText());
            queueSender.send(message);
        }

        /*
         * Send a non-text control message indicating end of messages.
         */
        queueSender.send(queueSession.createMessage());
    } catch (JMSException e) {
        LOG.info("Exception occurred: " + e.toString());
    } finally {
        if (queueConnection != null) {
            try {
                queueConnection.close();
            } catch (JMSException e) {
            }
        }
    }
}

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From source file:org.apache.activemq.demo.SimpleQueueSender.java

/**
 * Main method.// w  w  w  .ja va2 s.co m
 *
 * @param args the queue used by the example and, optionally, the number of
 *                messages to send
 */
public static void main(String[] args) {
    String queueName = null;
    Context jndiContext = null;
    QueueConnectionFactory queueConnectionFactory = null;
    QueueConnection queueConnection = null;
    QueueSession queueSession = null;
    Queue queue = null;
    QueueSender queueSender = null;
    TextMessage message = null;
    final int numMsgs;

    if ((args.length < 1) || (args.length > 2)) {
        LOG.info("Usage: java SimpleQueueSender " + "<queue-name> [<number-of-messages>]");
        System.exit(1);
    }
    queueName = args[0];
    LOG.info("Queue name is " + queueName);
    if (args.length == 2) {
        numMsgs = (new Integer(args[1])).intValue();
    } else {
        numMsgs = 1;
    }

    /*
     * Create a JNDI API InitialContext object if none exists yet.
     */
    try {
        jndiContext = new InitialContext();
    } catch (NamingException e) {
        LOG.info("Could not create JNDI API context: " + e.toString());
        System.exit(1);
    }

    /*
     * Look up connection factory and queue. If either does not exist, exit.
     */
    try {
        queueConnectionFactory = (QueueConnectionFactory) jndiContext.lookup("QueueConnectionFactory");
        queue = (Queue) jndiContext.lookup(queueName);
    } catch (NamingException e) {
        LOG.info("JNDI API lookup failed: " + e);
        System.exit(1);
    }

    /*
     * Create connection. Create session from connection; false means
     * session is not transacted. Create sender and text message. Send
     * messages, varying text slightly. Send end-of-messages message.
     * Finally, close connection.
     */
    try {
        queueConnection = queueConnectionFactory.createQueueConnection();
        queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
        queueSender = queueSession.createSender(queue);
        message = queueSession.createTextMessage();
        for (int i = 0; i < numMsgs; i++) {
            message.setText("This is message " + (i + 1));
            LOG.info("Sending message: " + message.getText());
            queueSender.send(message);
        }

        /*
         * Send a non-text control message indicating end of messages.
         */
        queueSender.send(queueSession.createMessage());
    } catch (JMSException e) {
        LOG.info("Exception occurred: " + e.toString());
    } finally {
        if (queueConnection != null) {
            try {
                queueConnection.close();
            } catch (JMSException e) {
            }
        }
    }
}

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