Jboss 7 simple hello world application.
Hi all,
I am trying to get a simple JMS "Hello world" application to run. I would like to try it out on Jboss 7 but i am not able to run it. I think the problem is most likely to the way i have configured the queue within Jboss. Here are the steps i did.
- Configure queue
Quene name: testQueue
JNDI name: queue/test
The queue configuration has an option for "Selector". Can this be left blank and if not, what goes in this field?
- Code
Here is the code i am using as the Sender. I am not worried of the receiver for now as i just want to start sending a message first.
package jms.ex3;
import javax.naming.InitialContext;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.QueueSender;
import javax.jms.DeliveryMode;
import javax.jms.QueueSession;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
public class Sender
{
public static void main(String[] args) throws Exception
{
// get the initial context
InitialContext ctx = new InitialContext();
// lookup the queue object
Queue queue = (Queue) ctx.lookup("queue/test");
// lookup the queue connection factory
QueueConnectionFactory connFactory = (QueueConnectionFactory) ctx.
lookup("queue/connectionFactory");
// create a queue connection
QueueConnection queueConn = connFactory.createQueueConnection();
// create a queue session
QueueSession queueSession = queueConn.createQueueSession(false,
Session.DUPS_OK_ACKNOWLEDGE);
// create a queue sender
QueueSender queueSender = queueSession.createSender(queue);
queueSender.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
// create a simple message to say "Hello"
TextMessage message = queueSession.createTextMessage("Hello");
// send the message
queueSender.send(message);
// print what we did
System.out.println("sent: " + message.getText());
// close the queue connection
queueConn.close();
}
}
When i run the above class i get the following error:
java -classpath C:\Users\702723344\Downloads\glassfish-3.1.1\glassfish3\glassfish\lib\javaee.jar;. jms.ex3.Sender
Exception in thread "main" javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.lookup(Unknown Source)
at jms.ex3.Sender.main(Sender.java:22)
How exactly does the above class know that the Provider(Jboss) is running on the localhost machine? Dont i need to specify an IP address somewhere? Any ideas?
