This example shows you how to send a message to an MDB and then roll back the transaction forcing re delivery
The example will send deploy a simple MDB and demonstrate sending a message and the MDB consuming it twice
The example leverages the JBoss Arquillian framework to run an AS 7 instance and deploy the MDB.
download AS 7.1.1.final from here and install.
set the JBOSS_HOME property to point to AS7 install directory
To run the example simply type mvn test
from the example directory
jndi.properties
file in the directory config
initialContext = new InitialContext();
Queue queue = (Queue) initialContext.lookup("/queue/testQueue");
ConnectionFactory cf = (ConnectionFactory) initialContext.lookup("/ConnectionFactory");
connection = cf.createConnection();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer messageProducer = session.createProducer(queue);
TextMessage message = session.createTextMessage("This is a text message");
messageProducer.send(message);
TextMessage tm = (TextMessage)message;
String text = textMessage.getText(); if(!textMessage.getJMSRedelivered()) { //Step 11. rollback delivery of message if the first time System.out.println("message " + text + " received for the first time"); ctx.setRollbackOnly(); }
System.out.println("message " + text + " received for the second time");
finally
block. Closing a JMS connection will automatically close all of its sessions, consumers, producer and browser objectsfinally { if (initialContext != null) { initialContext.close(); } if (connection != null) { connection.close(); } }