About BEA WebLogic JMS on the cluster

Question

Hi,
I have 3 files which together build in 1 EAR, then deploy on the cluster. I can see my message publish to the distributed topic successfully, but the listener process is not work. Could anyone give me a little clue.
// this one publish msg to the distributed topic.
import javax.naming.*;
import javax.jms.*;
import javax.rmi.PortableRemoteObject ;
import java.util.*;
public class PublishTopic {
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory" ;
public final static String JMS_FACTORY = "weblogic.jws.jms.QueueConnectionFactory" ;
public final static String URL = "t3://localhost:7003,localhost:7005" ;
public final static String DIST_TOPIC = "dist_topic" ;
public String publishMsg(String s) throws Exception {
InitialContext ic = getInitialContext();
TopicConnectionFactory tcf = (TopicConnectionFactory) PortableRemoteObject.narrow
(ic.lookup(JMS_FACTORY),TopicConnectionFactory.class);
TopicConnection tc = tcf.createTopicConnection();
TopicSession ts = tc.createTopicSession(false,Session.AUTO_ACKNOWLEDGE);
Topic t = ts.createTopic(DIST_TOPIC);
TopicPublisher tpub = ts.createPublisher(t);
TextMessage msg = ts.createTextMessage(s);
tc.start();
tpub.publish(msg);
tc.close();
return "publish - : " + msg.getText();
public static InitialContext getInitialContext()throws NamingException {
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
ht.put(Context.PROVIDER_URL,URL);
return new InitialContext(ht);
=================================================
// the listener one.
import javax.rmi.PortableRemoteObject ;
import java.util.HashMap;
import java.util.Date;
import javax.naming.*;
import javax.jms.*;
import java.io.*;
public class ListenMsg implements MessageListener {
private static HashMap hm ;
private static TopicConnection tcon ;
static {
// the coding inside static will process once every time
// class load. The code inside here should be
// 1. subscrib to the distributed topic
// 2. refresh the static var.
ListenMsg lm = new ListenMsg();
lm.retrieveDB();
lm.subscribTopic();
lm = null ;
public void onMessage(Message m) {
try {
PrintWriter p = new PrintWriter(new FileOutputStream
("C:/bea/user_projects/applications/TestJMS/JMSLog.txt",true));
p.println(new Date().toLocaleString());
p.println(((TextMessage)m).getText() + "\n");
// check to see the content of m then decide whether
// to call retrieveDB.
} catch (Exception e) {
} finally {
if (tcon != null)
try {
tcon.close();
} catch (Exception e) {}
private void retrieveDB () {
// connect to DB then select the allow/unallow-list.
private void subscribTopic(){
try {
InitialContext ic = PublishTopic.getInitialContext();
TopicConnectionFactory tcf = (TopicConnectionFactory) PortableRemoteObject.narrow
(ic.lookup(PublishTopic.JMS_FACTORY),TopicConnectionFactory.class);
tcon = tcf.createTopicConnection();
TopicSession tsess = tcon.createTopicSession(false,Session.AUTO_ACKNOWLEDGE);
// crateTopic doesn't actually create a new one but instead
// obtain a reference to the object which given name.
Topic t = tsess.createTopic(PublishTopic.DIST_TOPIC);
TopicSubscriber tsub = tsess.createSubscriber(t);
tsub.setMessageListener(this);
tcon.start();
} catch(JMSException je) {
je.printStackTrace();
} catch (NamingException ne) {
ne.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
public boolean isAuthorized(String username, String servicename) {
// check against hm.
return true ;
===============================================
// the web service file.
public class TestPublish implements com.bea.jws.WebService
static final long serialVersionUID = 1L;
* @common:operation
public String sendMsg(String s) throws Exception {
String r = "";
try {
PublishTopic pt = new PublishTopic();
r = pt.publishMsg(s);
} catch(Exception e) {
e.printStackTrace();
throw e;
return r;
A big thanks in advance.
Tanin

Answer 1

Hi
Please verify that the listener points to the correct JNDI name
Do you see any error in the log ?
Jin