Access EJB from Swing App with Wildfly as AS

[Michelle Nicholes]

Okay, I am sure this question gets asked a million times. And I bet the reason is because there is so many documents created with so many variations which for some crazy reason never seemed to work in my case. Its too bad how to do this couldnt be standardized and then remove all the wrong ways which are suggested out there. The implementation I am about to present came from a post who said they finally got it to work and this is how they did it. Except it didnt work for me.

First my environment:
Windows 7
Eclipse IDE Luna
Wildfly AS 8.1 using Standalone only no EAP
Have created a manager user which is the user I am using.
Database I am using as a datasource is DB2 9.7

EJB:
SampleBean is Webservice and Local which extends EJBInterface

@Stateless
@LocalBean
@WebService
@Interceptors(TransactionRollbackHandler.class)
public class SampleBean implements SampleBeanInterface 

EJBInterface:
SampleBeanInterface is Remote

@Remote
public interface SampleBeanInterface 

Swing app has jboss-client.jar in build path as well as the EJB

ClientUtility:

package com.cs.db2Sample.swing;

import java.util.Properties;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;

import org.jboss.ejb.client.ContextSelector;
import org.jboss.ejb.client.EJBClientConfiguration;
import org.jboss.ejb.client.EJBClientContext;
import org.jboss.ejb.client.PropertiesBasedEJBClientConfiguration;
import org.jboss.ejb.client.remoting.ConfigBasedEJBClientContextSelector;
 
public class ClientUtility 
{
 
    private static Context initialContext = null;
 
    private static final String INIT_FACTORY = "org.jboss.naming.remote.client.InitialContextFactory";

    private static final String PKG_PREFIX = "org.jboss.ejb.client.naming";
    private static final String SERVER = "s160";
    private static final String PORT = "8080";
    private static final String USER = <Manage user>;
    private static final String PASSWORD = <password>;
 
    public static Context getInitialContext() throws NamingException 
    {
        if (initialContext == null) 
        {
        	Properties clientProps = new Properties();
            
            clientProps.put("remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED", "false");
            clientProps.put("remote.connections", "default");
            clientProps.put("endpoint.name", "client-endpoint");
            clientProps.put("remote.connection.default.port", PORT);
            clientProps.put("remote.connection.default.host", SERVER);
            clientProps.put("remote.connection.default.username", USER);
            clientProps.put("remote.connection.default.password", PASSWORD);
            
            EJBClientConfiguration ejbConfig = new PropertiesBasedEJBClientConfiguration(clientProps);
            ContextSelector<EJBClientContext> cntxSelector = new ConfigBasedEJBClientContextSelector(ejbConfig);
            EJBClientContext.setSelector(cntxSelector);
          
            Properties props = new Properties();
            props.put(Context.INITIAL_CONTEXT_FACTORY, INIT_FACTORY);
            props.put("jboss.naming.client.ejb.context", true);
            props.put(Context.URL_PKG_PREFIXES, PKG_PREFIX);
            props.put(Context.PROVIDER_URL, "http:remoting://" + SERVER + ":" + PORT);
            props.put(Context.SECURITY_PRINCIPAL, USER);
            props.put(Context.SECURITY_CREDENTIALS, PASSWORD);
            props.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_POLICY_NOPLAINTEXT", "false");
            props.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS", "true");
            props.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_DISALLOWED_MECHANISMS", "JBOSS-LOCAL-USER");
        	
            initialContext = new InitialContext(props);
        }
        return initialContext;
    }

}

Table Model Lookup function:

	private void lookup() 
    {  
	    final String APP = "wildflyDB2SampleEAR";
	    final String MODULE = "wildflyDB2SampleEJB";
	    final String DISTINCT = "";
	    final String BEAN = SampleBean.class.getSimpleName();
	    final String INTERFACE = SampleBeanInterface.class.getName();
	    
	    final String JNDI = "ejb:" + APP + "/" + MODULE + "/" + DISTINCT + "/" + BEAN + "!" + INTERFACE;



	    Context context = null;
        try
        {
        	context = ClientUtility.getInitialContext(); 
        	bean = (SampleBeanInterface) context.lookup(JNDI);         
        }
        catch (NamingException e)
        {
        	e.printStackTrace();
        }
    }  

Error:
Jul 10, 2014 8:24:04 AM org.xnio.Xnio <clinit>
INFO: XNIO version 3.2.2.Final
Jul 10, 2014 8:24:05 AM org.xnio.nio.NioXnio <clinit>
INFO: XNIO NIO Implementation Version 3.2.2.Final
Jul 10, 2014 8:24:05 AM org.jboss.remoting3.EndpointImpl <clinit>
INFO: JBoss Remoting version (unknown)
Jul 10, 2014 8:24:05 AM org.jboss.ejb.client.EJBClient <clinit>
INFO: JBoss EJB Client version 2.0.1.Final
Jul 10, 2014 8:24:07 AM org.jboss.ejb.client.remoting.VersionReceiver handleMessage
INFO: EJBCLIENT000017: Received server version 2 and marshalling strategies [river]
Jul 10, 2014 8:24:07 AM org.jboss.ejb.client.remoting.RemotingConnectionEJBReceiver associate
INFO: EJBCLIENT000013: Successful version handshake completed for receiver context EJBReceiverContext{clientContext=org.jboss.ejb.client.EJBClientContext@554850, receiver=Remoting connection EJB receiver [connection=org.jboss.ejb.client.remoting.ConnectionPool$PooledConnection@c2c34a,channel=jboss.ejb,nodename=s160]} on channel Channel ID a8700422 (outbound) of Remoting connection 00aaeda6 to s160/10.143.74.86:8080
javax.naming.CommunicationException: Failed to connect to any server. Servers tried: [http:remoting://s160:8080 (No connection provider for URI scheme "http" is installed)]
at org.jboss.naming.remote.client.HaRemoteNamingStore.failOverSequence(HaRemoteNamingStore.java:244)
at org.jboss.naming.remote.client.HaRemoteNamingStore.namingStore(HaRemoteNamingStore.java:149)
at org.jboss.naming.remote.client.HaRemoteNamingStore.namingOperation(HaRemoteNamingStore.java:130)
at org.jboss.naming.remote.client.HaRemoteNamingStore.lookup(HaRemoteNamingStore.java:272)
at org.jboss.naming.remote.client.RemoteContext.lookup(RemoteContext.java:87)
at org.jboss.naming.remote.client.RemoteContext.lookup(RemoteContext.java:129)
at javax.naming.InitialContext.lookup(Unknown Source)
at com.cs.db2Sample.swing.PlacesModel.lookup(PlacesModel.java:140)
at com.cs.db2Sample.swing.PlacesModel.<init>(PlacesModel.java:23)
at com.cs.db2Sample.swing.PeopleTable.<init>(PeopleTable.java:23)
at com.cs.db2Sample.swing.PeopleTable.createAndShowGUI(PeopleTable.java:57)
at com.cs.db2Sample.swing.PeopleTable.access$0(PeopleTable.java:47)
at com.cs.db2Sample.swing.PeopleTable$2.run(PeopleTable.java:74)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$400(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.cs.db2Sample.swing.PlacesModel.getAllPlaces(PlacesModel.java:113)
at com.cs.db2Sample.swing.PlacesModel.<init>(PlacesModel.java:24)
at com.cs.db2Sample.swing.PeopleTable.<init>(PeopleTable.java:23)
at com.cs.db2Sample.swing.PeopleTable.createAndShowGUI(PeopleTable.java:57)
at com.cs.db2Sample.swing.PeopleTable.access$0(PeopleTable.java:47)
at com.cs.db2Sample.swing.PeopleTable$2.run(PeopleTable.java:74)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$400(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

So, what am I doing wrong?

[Jaikiran Pai]

Haven't fully read the post, but 2 quick things:

Have created a manager user which is the user I am using.

You need to create an application user and not a management user for allowing the remote EJB invocations.

The other one:

props.put(Context.PROVIDER_URL, "http:remoting://" + SERVER + ":" + PORT);

You seem to have a typo in there. It should be http-remoting and not http:remoting.

[Michelle Nicholes]

added new app user and changed the http-remoting and this is the new error:


Jul 10, 2014 8:55:26 AM org.xnio.Xnio <clinit>
INFO: XNIO version 3.2.2.Final
Jul 10, 2014 8:55:26 AM org.xnio.nio.NioXnio <clinit>
INFO: XNIO NIO Implementation Version 3.2.2.Final
Jul 10, 2014 8:55:27 AM org.jboss.remoting3.EndpointImpl <clinit>
INFO: JBoss Remoting version (unknown)
Jul 10, 2014 8:55:27 AM org.jboss.ejb.client.EJBClient <clinit>
INFO: JBoss EJB Client version 2.0.1.Final
Jul 10, 2014 8:55:28 AM org.jboss.ejb.client.remoting.VersionReceiver handleMessage
INFO: EJBCLIENT000017: Received server version 2 and marshalling strategies [river]
Jul 10, 2014 8:55:28 AM org.jboss.ejb.client.remoting.RemotingConnectionEJBReceiver associate
INFO: EJBCLIENT000013: Successful version handshake completed for receiver context EJBReceiverContext{clientContext=org.jboss.ejb.client.EJBClientContext@554850, receiver=Remoting connection EJB receiver [connection=org.jboss.ejb.client.remoting.ConnectionPool$PooledConnection@c2c34a,channel=jboss.ejb,nodename=s160]} on channel Channel ID cfec4ea4 (outbound) of Remoting connection 00d71c61 to s160/10.143.74.86:8080
Jul 10, 2014 8:55:29 AM org.jboss.ejb.client.remoting.VersionReceiver handleMessage
INFO: EJBCLIENT000017: Received server version 2 and marshalling strategies [river]
Jul 10, 2014 8:55:29 AM org.jboss.ejb.client.remoting.RemotingConnectionEJBReceiver associate
INFO: EJBCLIENT000013: Successful version handshake completed for receiver context EJBReceiverContext{clientContext=org.jboss.ejb.client.EJBClientContext@f0ac2b, receiver=Remoting connection EJB receiver [connection=Remoting connection <1a0034>,channel=jboss.ejb,nodename=s160]} on channel Channel ID e438dd51 (outbound) of Remoting connection 0065ad45 to s160/10.143.74.86:8080
javax.naming.NameNotFoundException: com.cs.db2Sample.service.SampleBeanInterface -- service jboss.naming.context.java.jboss.exported."com.cs.db2Sample.service.SampleBeanInterface"
at org.jboss.as.naming.ServiceBasedNamingStore.lookup(ServiceBasedNamingStore.java:104)
at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:202)
at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:179)
at org.jboss.naming.remote.protocol.v1.Protocol$1.handleServerMessage(Protocol.java:127)
at org.jboss.naming.remote.protocol.v1.RemoteNamingServerV1$MessageReciever$1.run(RemoteNamingServerV1.java:73)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.cs.db2Sample.swing.PlacesModel.getAllPlaces(PlacesModel.java:113)
at com.cs.db2Sample.swing.PlacesModel.<init>(PlacesModel.java:24)
at com.cs.db2Sample.swing.PeopleTable.<init>(PeopleTable.java:27)
at com.cs.db2Sample.swing.PeopleTable.createAndShowGUI(PeopleTable.java:61)
at com.cs.db2Sample.swing.PeopleTable.access$0(PeopleTable.java:51)
at com.cs.db2Sample.swing.PeopleTable$2.run(PeopleTable.java:78)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$400(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Jul 10, 2014 8:55:31 AM org.jboss.ejb.client.remoting.ChannelAssociation$ResponseReceiver handleEnd
INFO: EJBCLIENT000016: Channel Channel ID cfec4ea4 (outbound) of Remoting connection 00d71c61 to s160/10.143.74.86:8080 can no longer process messages

[Michelle Nicholes]

I just noticed something that may or may not be relevant. As I have been checking out the admin console. I noticed the JNDI View. In this view it shows :

java:
java:Jboss
java:Jboss/exported
java:global
applications


I couldnt help notice there is no ejb: I wonder if that is what my problem is

final String JNDI = "ejb:" + APP + "/" + MODULE + "/" + DISTINCT + "/" + BEAN + "!" + INTERFACE;


If I open applications, I find the ear. in that I see java:app and inside that I find the EJB and in that I find the name for the EJB/Interface

If I open java:global, I find the ear, then the ejb, and then the ejb/Interface.

Does this help any?

[Ron McLeod]

Can you print-out the JNDI name that you assembled? It should be something like

ejb:wildflyDB2SampleEAR/wildflyDB2SampleEJB//SampleBean!com.cs.db2Sample.service.SampleBeanInterface

[Michelle Nicholes]

Thank you Ron. You are correct, I can print out the name and your guess as to what the name would be is correct. The part I cant figure out is how that solves my problem?

[Ron McLeod]

When you deploy the EAR, do you see this in the list of JNDI bindings?

java:jboss/exported/wildflyDB2SampleEAR/wildflyDB2SampleEJB/SampleBean!com.cs.db2Sample.service.SampleBeanInterface

[Michelle Nicholes]

Yes it is

[Ron McLeod]

What is the package name for the EJB interface?

[Michelle Nicholes]

package com.cs.db2Sample.service;