Error when deploying ejb 3 in weblogic10

Question

Hi,
I'm using the EJB3.0 in weblogic10, just as the following:
remote interface:
com.test.intf
public interface Test{
public void test();
and the impl:
com.test.impl
@stateless
@Remote(Test.class)
public class TestBean implements Test{
public void test{...}
Then I build an ear which including the ejb jar:
Test.ear
|__ejb.jar (including the Test and the TestBean)
|
|__Meta-Inf
And when I deploy the Test.jar to the weblogic 10, the following error occurs:
weblogic.utils.AssertionError: ***** ASSERTION FAILED *****[ Unable to load clas
s com.test.impl.TestBean_3u7muo_EmergencyServiceF
uncImpl ]
at weblogic.ejb.container.deployer.Ejb3SessionBeanInfoImpl.prepare(Ejb3S
essionBeanInfoImpl.java:319)
at weblogic.ejb.container.deployer.EJBDeployer.setupBeanInfos(EJBDeploye
r.java:914)
at weblogic.ejb.container.deployer.EJBDeployer.prepare(EJBDeployer.java:
1188)
at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:425)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(Modu
leListenerInvoker.java:93)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(Depl
oymentCallbackFlow.java:387)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineD
river.java:37)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(Dep
loymentCallbackFlow.java:58)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(Dep
loymentCallbackFlow.java:42)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.ja
va:615)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineD
river.java:37)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.j
ava:191)
at weblogic.application.internal.EarDeployment.prepare(EarDeployment.jav
a:16)
at weblogic.application.internal.DeploymentStateChecker.prepare(Deployme
ntStateChecker.java:155)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(App
ContainerInvoker.java:60)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.cr
eateAndPrepareContainer(ActivateOperation.java:197)
at weblogic.deploy.internal.targetserver.operations.ActivateOperation.do
Prepare(ActivateOperation.java:89)
at weblogic.deploy.internal.targetserver.operations.AbstractOperation.pr
epare(AbstractOperation.java:217)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploym
entPrepare(DeploymentManager.java:723)
at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploy
mentList(DeploymentManager.java:1190)
at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare
(DeploymentManager.java:248)
at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.pre
pare(DeploymentServiceDispatcher.java:159)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallb
ackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:157)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallb
ackDeliverer.access$000(DeploymentReceiverCallbackDeliverer.java:12)
at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallb
ackDeliverer$1.run(DeploymentReceiverCallbackDeliverer.java:45)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTunin
gWorkManagerImpl.java:516)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused by: java.lang.ClassNotFoundException: com.oracle.ocrt.service.impl.Emerge
ncyServiceFuncBean_3u7muo_TestIntf
at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(Generic
ClassLoader.java:283)
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClass
Loader.java:256)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClass
Loader.java:176)
at weblogic.ejb.container.deployer.BeanInfoImpl.loadClass(BeanInfoImpl.j
ava:540)
at weblogic.ejb.container.deployer.Ejb3SessionBeanInfoImpl.prepare(Ejb3S
essionBeanInfoImpl.java:310)
... 27 more
<2008-9-26 下午08时35分07秒 CST> <Error> <Deployer> <BEA-149265> <Failure occurr
ed in the execution of deployment request with ID '1222432506169' for task '0'.
Error is: 'weblogic.application.ModuleException: Exception preparing module: EJB
Module(test.jar)
Unable to deploy EJB: TestBean from test.jar:
***** ASSERTION FAILED *****[ Unable to load class com.test.impl.TestBean_3u7muo_TestImpl ]
weblogic.application.ModuleException: Exception preparing module: EJBModule(test.jar)
Unable to deploy EJB: TestBean from test.jar:
***** ASSERTION FAILED *****[ Unable to load class com.test.impl.TestBean_3u7muo_TestImpl ]
at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:452)
What is the problem? And What can I do?
BTW, if I change the @Remote to @Local, I can deploy the ejb successfully.
In addition, Who knows how to access the ejb3.0 from a standalone client just like access the EJB2.0:
properties = new Properties();
properties.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
properties.put(Context.PROVIDER_URL, "t3://localhost:7001");
Context cont = new InitialContext(properties);
Obj ref = cont.lookup("???"); //--------------------> What should I write here???
Thanks!

Answer 1

Hi,
It's not easy to tell what's wrong with your example.
Maybe you could send me a zip and I'll check when I have some time.
By the way, you're asking a question about the lookup of an EJB3, I wrote an article that covers that topic.
It should give you some interesting input.
http://m-button.blogspot.com/2008/07/reminder-on-how-to-use-ejb3-with.html
Regards.