I need to write a Java client listening to WebSphere MQ Server. Message is put into a queue in the server.
I developed this code, but am not sure it is correct or not. If correct, then how can I test it?
This is a standalone Java project, no application server support. Which jars I should put into classpath?
I have the MQ settings, where I should put into my codes? Standard JMS can skip these settings? confusing ....
import javax.jms.Destination;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueReceiver;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class Main {
Context jndiContext = null;
QueueConnectionFactory queueConnectionFactory = null;
QueueConnection queueConnection = null;
QueueSession queueSession = null;
Queue controlQueue = null;
QueueReceiver queueReceiver = null;
private String queueSubject = "";
private void start() {
try {
queueConnection.start();
queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
Destination destination = queueSession.createQueue(queueSubject);
MessageConsumer consumer = queueSession.createConsumer(destination);
consumer.setMessageListener(new MyListener());
} catch (Exception e) {
e.printStackTrace();
}
}
private void close() {
try {
queueSession.close();
queueConnection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
private void init() {
try {
jndiContext = new InitialContext();
queueConnectionFactory = (QueueConnectionFactory) this.jndiLookup("QueueConnectionFactory");
queueConnection = queueConnectionFactory.createQueueConnection();
queueConnection.start();
} catch (Exception e) {
System.err.println("Could not create JNDI API " + "context: " + e.toString());
System.exit(1);
}
}
private class MyListener implements MessageListener {
@Override
public void onMessage(Message message) {
System.out.println("get message:" + message);
}
}
private Object jndiLookup(String name) throws NamingException {
Object obj = null;
if (jndiContext == null) {
try {
jndiContext = new InitialContext();
} catch (NamingException e) {
System.err.println("Could not create JNDI API " + "context: " + e.toString());
throw e;
}
}
try {
obj = jndiContext.lookup(name);
} catch (NamingException e) {
System.err.println("JNDI API lookup failed: " + e.toString());
throw e;
}
return obj;
}
public Main() {
}
public static void main(String[] args) {
new Main();
}
}
MQ Queue setting
<queue-manager>
<name>AAA</name>
<port>1423</port>
<hostname>ddd</hostname>
<clientChannel>EEE.CLIENTS.00</clientChannel>
<securityClass>PKIJCExit</securityClass>
<transportType>1</transportType>
<targetClientMatching>1</targetClientMatching>
</queue-manager>
<queues>
<queue-details id="queue-1">
<name>GGGG.NY.00</name>
<transacted>false</transacted>
<acknowledgeMode>1</acknowledgeMode>
<targetClient>1</targetClient>
</queue-details>
</queues>
