[jboss-user] [EJB 3.0 Users] - JBoss 4.2.1 RemoteEJB Lookup ClassCastException

kyle.bober do-not-reply at jboss.com
Wed Nov 11 17:47:36 EST 2009


I have two EAR files that each contain an ejb jar file.
I have configured each of the EAR files to isolate there classloaders like so..


  | <?xml version="1.0" encoding="UTF-8"?>
  | <!DOCTYPE jboss-app PUBLIC
  | 	"-//JBoss//DTD J2EE Application 1.4//EN"
  | 	"http://www.jboss.org/j2ee/dtd/jboss-app_4_2.dtd">
  | <jboss-app>
  | 	<loader-repository>com.kbss:loader=service1.ear
  | 		<loader-repository-config>java2ParentDelegation=false</loader-repository-config>
  | 	</loader-repository>
  | </jboss-app>
  | 

and 


  | <?xml version="1.0" encoding="UTF-8"?>
  | <!DOCTYPE jboss-app PUBLIC
  | 	"-//JBoss//DTD J2EE Application 1.4//EN"
  | 	"http://www.jboss.org/j2ee/dtd/jboss-app_4_2.dtd">
  | <jboss-app>
  | 	<loader-repository>com.kbss:loader=service2.ear
  | 		<loader-repository-config>java2ParentDelegation=false</loader-repository-config>
  | 	</loader-repository>
  | </jboss-app>
  | 

Here is the Local, Remote and Implementation class for Service1EJB

Local

  | package com.kbss;
  | 
  | import java.util.List;
  | import javax.ejb.Remote;
  | 
  | @Local
  | public interface IService1Local {
  | 	
  |     public static final String EJB_JNDI = "Service1/local";
  | 
  |     public Integer read() throws RemoteException;
  | }
  | 

Remote

  | package com.thesearchagency.mms.service.customization;
  | 
  | import java.util.List;
  | 
  | import javax.ejb.Remote;
  | import javax.xml.bind.annotation.XmlTransient;
  | 
  | @Remote
  | public interface IService1Remote {
  | 	
  | 	/**
  |      * JNDI registrations for locating interface:
  |      */
  |     public static final String EJB_JNDI = "Service1/remote";
  | 
  |     public Integer read() throws RemoteException;
  | }
  | 

Implementation

  | 
  | package com.kbss;
  | 
  | import javax.ejb.Stateless;
  | import org.jboss.annotation.ejb.LocalBinding;
  | import org.jboss.annotation.ejb.RemoteBinding;
  | 
  | @Stateless
  | @LocalBinding(jndiBinding=IService1Local.EJB_JNDI)
  | @RemoteBinding(jndiBinding=IService1Remote.EJB_JNDI)
  | public class Service1EJB implements IService1Local, IService1Remote {	
  | 
  | 	public Integer read() throws RemoteException {
  | 		return new Integer(123);
  | 	}
  | }
  | 


Here is the Local, Remote and Implementation class for Service2EJB

Local

  | package com.kbss;
  | 
  | import javax.ejb.Local;
  | 
  | @Local
  | public interface IService2Local {
  | 	
  |     public static final String EJB_JNDI = "Service2/local";
  | 	
  |     public void test() throws RemoteException;
  | }
  | 

Remote

  | package com.kbss;
  | 
  | import javax.ejb.Remote;
  | 
  | @Remote
  | public interface IService2Remote {
  | 		
  |     public static final String EJB_JNDI = "Service2/remote";
  | 
  |     
  |     public void test() throws RemoteException;
  | }
  | 

Implementation

  | package com.kbss;
  | 
  | import javax.ejb.Stateless;
  | import javax.naming.InitialContext;
  | import javax.naming.NamingException;
  | 
  | import org.jboss.annotation.ejb.LocalBinding;
  | import org.jboss.annotation.ejb.RemoteBinding;
  | 
  | @Stateless
  | @LocalBinding(jndiBinding=IUserLocal.EJB_JNDI)
  | @RemoteBinding(jndiBinding=IUserRemote.EJB_JNDI)
  | public class Service2EJB implements IService2Local, IService2Remote {
  | 
  | 	
  | 	public void test() throws RemoteException {		
  | 		
  | 		InitialContext ctx = new InitialContext();   
  |     		IService1Remote remote = (IService1Remote)ctx.lookup(IService1Remote.EJB_JNDI);		
  | 		System.out.println("Remote Integer :: "+remote.read());
  | 	}
  | }
  | 

When I call the test method on service1 I am always presented with the following ClassCastException:
(I changed some of the above code to remove my clients information so the Exception Stack maybe a little different then the classes stated above)


  | javax.ejb.EJBException: java.lang.ClassCastException: $Proxy187
  | 	at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:63)
  | 	at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
  | 	at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
  | 	at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:106)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:214)
  | 	at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:184)
  | 	at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:81)
  | 	at $Proxy196.create(Unknown Source)
  | 	at com.kbss.mms.service.user.impl.UserWS.create(UserWS.java:48)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.ws.core.server.ServiceEndpointInvokerJSE.invokeServiceEndpointInstance(ServiceEndpointInvokerJSE.java:104)
  | 	at org.jboss.ws.core.server.AbstractServiceEndpointInvoker.invoke(AbstractServiceEndpointInvoker.java:207)
  | 	at org.jboss.ws.core.server.ServiceEndpoint.processRequest(ServiceEndpoint.java:212)
  | 	at org.jboss.ws.core.server.ServiceEndpointManager.processRequest(ServiceEndpointManager.java:448)
  | 	at org.jboss.ws.core.server.AbstractServiceEndpointServlet.doPost(AbstractServiceEndpointServlet.java:114)
  | 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
  | 	at org.jboss.ws.core.server.AbstractServiceEndpointServlet.service(AbstractServiceEndpointServlet.java:75)
  | 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
  | 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  | 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  | 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  | 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
  | 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
  | 	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  | 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  | 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
  | 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  | 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
  | 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
  | 	at java.lang.Thread.run(Thread.java:595)
  | Caused by: java.lang.ClassCastException: $Proxy187
  | 	at com.kbss.mms.service.user.impl.UserEJB.getRemoteService(UserEJB.java:83)
  | 	at com.kbss.mms.service.user.impl.UserEJB.create(UserEJB.java:52)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
  | 	at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
  | 	at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
  | 	... 48 more
  | 17:38:07,031 ERROR [SOAPFaultHelperJAXWS] SOAP request exception
  | javax.ejb.EJBException: java.lang.ClassCastException: $Proxy187
  | 	at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:63)
  | 	at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
  | 	at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
  | 	at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:106)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:214)
  | 	at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:184)
  | 	at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:81)
  | 	at $Proxy196.create(Unknown Source)
  | 	at com.kbss.mms.service.user.impl.UserWS.create(UserWS.java:48)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.ws.core.server.ServiceEndpointInvokerJSE.invokeServiceEndpointInstance(ServiceEndpointInvokerJSE.java:104)
  | 	at org.jboss.ws.core.server.AbstractServiceEndpointInvoker.invoke(AbstractServiceEndpointInvoker.java:207)
  | 	at org.jboss.ws.core.server.ServiceEndpoint.processRequest(ServiceEndpoint.java:212)
  | 	at org.jboss.ws.core.server.ServiceEndpointManager.processRequest(ServiceEndpointManager.java:448)
  | 	at org.jboss.ws.core.server.AbstractServiceEndpointServlet.doPost(AbstractServiceEndpointServlet.java:114)
  | 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
  | 	at org.jboss.ws.core.server.AbstractServiceEndpointServlet.service(AbstractServiceEndpointServlet.java:75)
  | 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
  | 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  | 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  | 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  | 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
  | 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
  | 	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  | 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  | 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
  | 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  | 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
  | 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
  | 	at java.lang.Thread.run(Thread.java:595)
  | Caused by: java.lang.ClassCastException: $Proxy187
  | 	at com.kbss.mms.service.user.impl.UserEJB.getRemoteService(UserEJB.java:83)
  | 	at com.thesearchagency.mms.service.user.impl.UserEJB.create(UserEJB.java:52)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
  | 	at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
  | 	at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
  | 	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
  | 	at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
  | 	... 48 more
  | 
  | 

Both of these EAR are deployed on the same JBoss instance. I assume I am doing something wrong in trying to make a RemoteEJB call. Any help here would be much appreciated. I have looked at all the other forum posts in the EJB forum and nothing has helped me resolve this issue.

Thanks,
Kyle

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