EJB 3.1 lookup from client.

[mauriclaudio]

Good evening,

I'm trying to use remote EJB lookup, with JBoss AS7.1.0 CR1 as mentioned in https://docs.jboss.org/author/display/AS71/EJB+invocations+from+a+remote+client+using+JNDI

but actually, no luck.

I've developed a very simple EJB 3.1 project, but when I try to look up my ejb from a client, I get this exception:

{code}
Lookup ejb:/SampleEJB//Sample!test.SampleRemote
gen 02, 2012 6:38:38 PM org.jboss.ejb.client.EJBClient <clinit>
INFO: JBoss EJB Client version 1.0.0.Beta11
gen 02, 2012 6:38:38 PM org.xnio.Xnio <clinit>
INFO: XNIO Version 3.0.0.CR7
gen 02, 2012 6:38:38 PM org.jboss.ejb.client.ConfigBasedEJBClientContextSelector createConnections
ERROR: Could not create connection for connection named default
java.lang.IllegalArgumentException: No matching XNIO provider found
{code}
 

Client code is very simple, and exactly copied & adapted from sample:

{code}
public SampleRemote getReference() throws NamingException {
         final Hashtable jndiProperties = new Hashtable();        
         jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");        
         final Context context = new InitialContext(jndiProperties);
         final String appName = "";
         final String moduleName = "SampleEJB";
         final String distinctName = "";
         final String beanName = "Sample";
          // the remote view fully qualified class name       
         final String viewClassName = SampleRemote.class.getName();
         String jndiID = "ejb:" + appName + "/" + moduleName + "/" + distinctName + "/" + beanName + "!" + viewClassName;
         System.out.println(" Lookup "+jndiID);
         return (SampleRemote)context.lookup(jndiID);
    }
{code}

By the way, SampleEJB is correctly deployed as from JBoss log:

{code}
java:global/SampleEJB/Sample!test.SampleRemote
java:app/SampleEJB/Sample!test.SampleRemote
java:module/Sample!test.SampleRemote
java:global/SampleEJB/Sample
java:app/SampleEJB/Sample
java:module/Sample
{code}

Of course, I did not forget to specify an jboss-ejb-client properties file as described in the cited document...

What can I try and check to get this sample working ?

Thank you in advance.

[kavandesai]

Hi Claudio,

Can you try with portable JNDI string like

java:app/SampleEJB/Sample!test.SampleRemote ?

The similar example is working it my end fine when I access it from Servlet client.

[mauriclaudio]

Hi Kavan,

thank you for your reply. If I use "canonical" jndi name like java:app/SampleEJB/Sample!test.SampleRemote , as well as global JNDI name, inside a Java EE component, like servlet or another EJB, it works well. What I'm trying to do is to access EJB from a remote Swing client: so I followed cited document but without success.

I'm afraid that RC1 has changed something with respect to "Tesla" release that made things not working.

[jaikiran]

Are you sure you have all the required jars (as listed in that article), especially the xnio-nio jar on your client classpath? Can you post the jars in the client classpath (and their versions)?

[mauriclaudio]

Yes, I've checked them.... moreover, I needed other jar to compile and run the sample, more than those listed.

Here is the list of included jars:

jboss-ejb-api_3.1_spec-1.0.1.Final.jar

jboss-ejb-client-1.0.0.Beta11.jar

jboss-logging-3.1.0.CR2.jar

jboss-marshalling-1.3.4.GA.jar

jboss-marshalling-river-1.3.4.GA.jar

jboss-remoting-3.2.0.CR8.jar

jboss-sasl-1.0.0.Beta9.jar

jboss-transaction-api_1.1_spec-1.0.0.Final.jar

xnio-api-3.0.0.CR7.jar

All those jars are found in JBoss distribution's dirs. I copied them in another dir which isn't in JBoss classpath.

Client program is compiled and run via Netbeans 7.0.1, JDK 1.7 Upd 1.

Thank you for your help !

[jaikiran]

You are missing xnio-nio-3.0.0.CR7.jar

[jaikiran]

Claudio Mauri wrote:

moreover, I needed other jar to compile and run the sample, more than those listed.

Which one was that?

[mauriclaudio]

Thanks for your help, now it's working... I was wrong on another point:  no other jars are required , really sorry...

[rhusar]

Jaikiran, should there be a client artefact for maven so things like these arent common problems for users?

[jaikiran]

Yes, there should be one (but not limited to Maven) http://lists.jboss.org/pipermail/jboss-as7-dev/2011-November/004567.html. I or someone else should find the time to get it done before Final.

[andy215]

You should specify the jndi provider and the url of jndi server

[rhusar]

BTW Jira for client jars: https://issues.jboss.org/browse/AS7-2362