Problem with context.lookup

[Toni Black]

Hi everybody,

i try to build a client that uses an EJB3.0. This EJB is deployed on JBOSS 5.0.0

the following code creates an exception

Object ref = context.lookup("KomponenteBean/remote"); 

the associated exception

javax.naming.NamingException: Could not dereference object [Root exception is java.lang.reflect.UndeclaredThrowableException]
	at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1463)
	at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:809)
	at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:673)
	at javax.naming.InitialContext.lookup(InitialContext.java:392)
	at client.Client.<init>(Client.java:17)
	at client.Client.main(Client.java:33)
Caused by: java.lang.reflect.UndeclaredThrowableException
	at $Proxy0.createProxyBusiness(Unknown Source)
	at org.jboss.ejb3.proxy.objectfactory.session.SessionProxyObjectFactory.createProxy(SessionProxyObjectFactory.java:129)
	at org.jboss.ejb3.proxy.objectfactory.session.stateless.StatelessSessionProxyObjectFactory.getProxy(StatelessSessionProxyObjectFactory.java:79)
	at org.jboss.ejb3.proxy.objectfactory.ProxyObjectFactory.getObjectInstance(ProxyObjectFactory.java:156)
	at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
	at org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1438)
	at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1455)
	... 5 more
Caused by: java.lang.ClassNotFoundException: ressourcen.KomponenteRemote
	at org.jboss.remoting.serialization.ClassLoaderUtility.loadClass(ClassLoaderUtility.java:103)
	at org.jboss.remoting.loading.RemotingClassLoader.loadClass(RemotingClassLoader.java:86)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:247)
	at org.jboss.remoting.loading.ObjectInputStreamWithClassLoader.resolveProxyClass(ObjectInputStreamWithClassLoader.java:250)
	at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1531)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1493)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
	at org.jboss.aop.joinpoint.InvocationResponse.readExternal(InvocationResponse.java:119)
	at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
	at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObjectVersion2_2(JavaSerializationManager.java:238)
	at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:138)
	at org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:123)
	at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.versionedRead(MicroSocketClientInvoker.java:1215)
	at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:845)
	at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:160)
	at org.jboss.remoting.Client.invoke(Client.java:1708)
	at org.jboss.remoting.Client.invoke(Client.java:612)
	at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.proxy.remoting.IsLocalProxyFactoryInterceptor.invoke(IsLocalProxyFactoryInterceptor.java:72)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
	at $Proxy0.createProxyBusiness(Unknown Source)
	at org.jboss.ejb3.proxy.objectfactory.session.SessionProxyObjectFactory.createProxy(SessionProxyObjectFactory.java:129)
	at org.jboss.ejb3.proxy.objectfactory.session.stateless.StatelessSessionProxyObjectFactory.getProxy(StatelessSessionProxyObjectFactory.java:79)
	at org.jboss.ejb3.proxy.objectfactory.ProxyObjectFactory.getObjectInstance(ProxyObjectFactory.java:156)
	at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
	at org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1438)
	at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1455)
	at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:809)
	at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:673)
	at javax.naming.InitialContext.lookup(InitialContext.java:392)
	at client.Client.<init>(Client.java:17)
	at client.Client.main(Client.java:33)
	at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.ejb3.proxy.remoting.IsLocalProxyFactoryInterceptor.invoke(IsLocalProxyFactoryInterceptor.java:72)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
	at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
	... 12 more

The "JMX MBean Operation View" of JBOSS says

+- KomponenteBean (class: org.jnp.interfaces.NamingContext)
  |   +- remote-ressourcen.KomponenteRemote (class: Proxy for: ressourcen.KomponenteRemote)
  |   +- local (class: Proxy for: ressourcen.KomponenteLocal)
  |   +- remote (class: Proxy for: ressourcen.KomponenteRemote)
  |   +- local-ressourcen.KomponenteLocal (class: Proxy for: ressourcen.KomponenteLocal)

Does someone see the possible problem?