[jboss-user] [Beginners Corner] - java.lang.ClassCastException: org.jboss.util.id.GUID cannot

[bpet36]

Hi,

I am attempting to lookup and call methods on an ejb from a servlet where  the two are deployed in separate ear files on the same JBoss server. 

I believe I have encountered a classloading issue,  if so, I am not sure how to resolve it.  Can anyone help me resolve this problem?


Anyway, here is my latest progress, the exception is encountered at

obj = PortableRemoteObject.narrow(ctx.lookup("ejb/UserAdmin/UserBean" , Class.forName(className));

Is this a classloading issue or a configuration issue?  

Has anyone encountered this problem? And if so do you know what I may be doing wrong.

Thanks in advance, hopefully someone has a clue as to what this problem may be.

Bob

Lookup code

InitialContext ctx = new InitialContext();
Object obj = null;
try {
     obj = PortableRemoteObject.narrow(ctx.lookup("ejb/UserAdmin/UserBean"), Class.forName(className));
} catch (Exception e) {
    logger.log(Level.ERROR, e.getMessage(), e);
} 
UserBeanHome home = (UserBeanHome)obj; 
UserBean remote = (UserBean) home.create();


Exception

java.lang.ClassCastException: org.jboss.util.id.GUID cannot be cast to org.jboss
.util.id.GUID
at org.jboss.invocation.InvokerInterceptor.readExternal(InvokerInterceptor.java:358)
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.readObject(ObjectInputStream.java:351)
at org.jboss.proxy.Interceptor.readExternal(Interceptor.java:80)
at org.jboss.proxy.ejb.RetryInterceptor.readExternal(RetryInterceptor.java:291)
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.readObject(ObjectInputStream.java:351)
at org.jboss.proxy.Interceptor.readExternal(Interceptor.java:80)
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.readObject(ObjectInputStream.java:351)
at org.jboss.proxy.Interceptor.readExternal(Interceptor.java:80)
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.readObject(ObjectInputStream.java:351)
at org.jboss.proxy.Interceptor.readExternal(Interceptor.java:80)
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.readObject(ObjectInputStream.java:351)
at org.jboss.proxy.ClientContainer.readExternal(ClientContainer.java:156)
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:1945)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1869)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 java.rmi.MarshalledObject.get(MarshalledObject.java:142)
        at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
        at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:652)
        at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587)
        at javax.naming.InitialContext.lookup(InitialContext.java:392)
 

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