Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1694
  • Last Modified:

JMS Client for JBoss

Hi,

i am trying to write a client for JBoss JMS connection, and somehow it does not work. Here i what I have written so far

            Hashtable <String, String> props = new Hashtable <String, String> ();
            //props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
            props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.HttpNamingContextFactory");            
            props.put(Context.PROVIDER_URL, "http://localhost:1099");
            props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
           
            // Get the initial context with given properties
            ctx = new InitialContext(props);
            Object obj = ctx.lookup("ConnectionFactory");
            System.out.println(obj.getClass());
            // here I do not get the right object type
            topic = (Topic) ctx.lookup("topic/testTopic");
            // here it gives a ClassCastException

Thank you.
0
kerzner
Asked:
kerzner
  • 3
  • 2
  • 2
  • +1
1 Solution
 
objectsCommented:
use the following to determine what class is actually returned:

System.out.println(ctx.lookup("topic/testTopic").getClass());
0
 
lhankinsCommented:
With JBoss, this is the pattern I typically follow (note: you typically use a different connection factory name if you're doing the lookup from inside the AppServer vs. from a remote client):

      boolean isServer = false;  // if you're doing this from inside the appserver, set this flag to true :

      String connectionFactoryName = isServer ? "java:ConnectionFactory" : "UIL2ConnectionFactory";
      TopicConnectionFactory factory = (TopicConnectionFactory) context.lookup(connectionFactoryName);

      TopicConnection topicConnection = factory.createTopicConnection();
      TopicSession topicSession = topicConnection.createTopicSession(false, TopicSession.AUTO_ACKNOWLEDGE);

      Topic topic = (Topic) context.lookup("topic/testTopic");
      TopicSubscriber topicSubscriber = topicSession.createSubscriber(topic);
     
      //--- "this" must implement the MessageListener
      topicSubscriber.setMessageListener(this);
      topicConnection.start();

0
 
armoghanCommented:
instead of this
props.put(Context.PROVIDER_URL, "http://localhost:1099");
try something like this, change the HTTP port accordingly
 props.put(Context.PROVIDER_URL,
                        "http://localhost:8080/invoker/JNDIFactory");
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 
armoghanCommented:
Also give the credentials if needed
props.put(Context.SECURITY_PRINCIPAL, "guest");
props.put(Context.SECURITY_CREDENTIALS, "guest");
0
 
kerznerAuthor Commented:
This advice

props.put(Context.PROVIDER_URL, "http://localhost:8080/invoker/JNDIFactory");

works better, it gets me a connection factory. however, the factory I get is this

class org.jboss.mq.SpyConnectionFactory

not the TopicConnectionFactory I would expect. So then, when I create a topic

topicConnectionFactory = (TopicConnectionFactory) ctx.lookup("ConnectionFactory");
topicConnection = topicConnectionFactory.createTopicConnection();

I get this error.

Exception in thread "main" java.lang.NoClassDefFoundError: EDU/oswego/cs/dl/util/concurrent/ThreadFactory

Thanks again.


0
 
lhankinsCommented:
>
> I get this error.

>  Exception in thread "main" java.lang.NoClassDefFoundError: EDU/oswego/cs/dl/util/concurrent/ThreadFactory
>

You need to add concurrent.jar to your client's classpath.   This jar (along with many other jboss client jars) are located under the <jboss-root>/client directory.
0
 
kerznerAuthor Commented:
Ok, maybe I should take my comment back. When I added the "concurrent.jar", I got this oswego resolved, and it seems to work now.
0
 
armoghanCommented:
thanks:)
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

  • 3
  • 2
  • 2
  • +1
Tackle projects and never again get stuck behind a technical roadblock.
Join Now