ClassNotFoundException while calling remote ejb3 across isol
avogt_sundn Apr 9, 2008 8:25 AMUsing JBoss Portal 2.6.4 with JDK1.5.0
It seems to me that RMI class loading does not work with my configuration
I gave a security policy to the jboss to allow for RMI class loading.
And i gave the loaderport parameter to the DefaultEjb3Connector as described here [URL]http://www.jboss.com/index.html?module=bb&op=viewtopic&t=126930[/URL]
<mbean code="org.jboss.remoting.transport.Connector" name="jboss.remoting:type=Connector,name=DefaultEjb3Connector,handler=ejb3"> <depends>jboss.aop:service=AspectDeployer</depends> <!--attribute name="InvokerLocator">socket://${jboss.bind.address}:3873/?loaderport=4873</attribute--> <attribute name="Configuration"> <config> <invoker transport="socket"> <attribute name="serverBindAddress">${jboss.bind.address}</attribute> <attribute name="serverBindPort">3873</attribute> <attribute name="numAcceptThreads">1</attribute> <attribute name="maxPoolSize">300</attribute> <attribute name="clientMaxPoolSize" isParam="true">50</attribute> <attribute name="timeout" isParam="true">60000</attribute> <attribute name="loaderport" isParam="true">4873</attribute> <attribute name="serializationtype" isParam="true">jboss</attribute> <attribute name="byvalue" isParam="true">true</attribute> <attribute name="force_remote" isParam="true">true</attribute> </invoker> <handlers> <handler subsystem="AOP">org.jboss.aspects.remoting.AOPRemotingInvocationHandler</handler> </handlers> </config> </attribute> </mbean>
I get a ClassNotFoundException for the implementing ejb class of the method parameter, but I expected the class to be loaded via RMI loader (via WebService on localhost:8083). Is there something else that I need to configure?
Caused by: java.lang.ClassNotFoundException: palmyra.baustein.geschaeftsverwaltung.antrag.ProtokollVBeanEjb at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:430) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165) at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620) at org.jboss.system.JBossRMIClassLoader.loadClass(JBossRMIClassLoader.java:91) at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247) at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:197) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1544) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1634) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) at java.rmi.MarshalledObject.get(MarshalledObject.java:135) at org.jboss.aop.joinpoint.MethodInvocation.getArguments(MethodInvocation.java:267)
Let me explain the overall situation.
Consider this: one ejb A gets another ejb B injected via @EJB annotation.
ejb A is thus owning a proxy to ejb B.
the respective classes are deployed in two ears that are isolated ie. have their own class loader repositories declared in jboss-app.xml
In order to call methods on B, the ear with ejb A contains the ejb interface and parameter classes of ejb B.
Now while there is no problem ejb A calling methods on ejb B, B cannot call on A vice versa, because the ear of ejb B does not contain the classes of ejb A.
But I want ejb B to be able to callback its owning ejb A. I therefore transmitted the proxy of ejb A to ejb B.
class EjbB { public void setOwner(MyCommonInterface bean) { .. }
class MyInterceptor{ @Resource SessionContext sessionContext; void propagateOwner() { iface = sessionContext.getInvokedBusinessInterface(); MyCommonInterface owner = (MyCommonInterface) sessionContext.getBusinessObject(iface); EventListener listener = (EventListener) new InitialContext() .lookup("my-ear/EventListenerEjb/remote"); owner.setEventListener(listener); // the next line throw ClassNotFoundException listener.setReceiver(vbean);
14:14:39,978 ERROR [VBeanInterceptor] VBean: palmyra.baustein.geschaeftsverwaltung.antrag.ProtokollVBeanEjb@d213c: java.lang.Runti meException: java.lang.ClassNotFoundException: palmyra.baustein.geschaeftsverwaltung.antrag.ProtokollVBeanEjb java.lang.ClassNotFo undException: palmyra.baustein.geschaeftsverwaltung.antrag.ProtokollVBeanEjb java.lang.RuntimeException: java.lang.ClassNotFoundException: palmyra.baustein.geschaeftsverwaltung.antrag.ProtokollVBeanEjb at org.jboss.aop.joinpoint.MethodInvocation.getArguments(MethodInvocation.java:276) at org.jboss.ejb3.stateful.StatefulContainer.dynamicInvoke(StatefulContainer.java:328) at org.jboss.ejb3.remoting.IsLocalInterceptor.invokeLocal(IsLocalInterceptor.java:81) at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:72) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateful.StatefulRemoteProxy.invoke(StatefulRemoteProxy.java:139) at $Proxy400.setReceiver(Unknown Source) at palmyra.core.vorgangssteuerung.interceptor.VBeanInterceptor.doEJBAnnotation(VBeanInterceptor.java:125) at palmyra.core.vorgangssteuerung.interceptor.VBeanInterceptor.postConstruct(VBeanInterceptor.java:97)
Caused by: java.lang.ClassNotFoundException: palmyra.baustein.geschaeftsverwaltung.antrag.ProtokollVBeanEjb at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:242) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:430) at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165) at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620) at org.jboss.system.JBossRMIClassLoader.loadClass(JBossRMIClassLoader.java:91) at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247) at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:197) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1544) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1634) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) at java.rmi.MarshalledObject.get(MarshalledObject.java:135) at org.jboss.aop.joinpoint.MethodInvocation.getArguments(MethodInvocation.java:267)