Exception when using RMI in tomcat 5.5, after reloading webapp

Question

When I freshly start tomcat and deploy my web app, I can use RMI by creating a local registry and binding my objects.
However, as soon as I reload the web application, RMI no longer works and gives me this exception:
RMI error: error unmarshalling return; nested exception is:
        java.io.EOFException
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
        java.io.EOFException
        at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
        at java.rmi.Naming.lookup(Naming.java:84)
        at nl.heliotrope.tropebiz.tools.NutchRestarter.main(NutchRestarter.java:33)
Caused by: java.io.EOFException
        at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2498)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1273)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
        at sun.rmi.server.MarshalInputStream.readLocation(MarshalInputStream.java:285)
        at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:167)
        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.readObject(ObjectInputStream.java:348)
        ... 3 moreThe code to register my RMI object:
        logger.debug("Setting up RMI");
        //bind remote manager object to rmi resource
        RemoteManager remoteManager = new RemoteManager();
        try {
            Naming.rebind(rmiResource, remoteManager);
        } catch (MalformedURLException e) {
            throw new RuntimeException("Cannot happen: " + e.getMessage());
        } catch (RemoteException e) {
            /* perhaps the registry was not started yet? Attempt.
             * Cannot create registry automatically at web application startup,
             * because another app may have done so already.
            logger.debug("Error registering remote manager to RMI, " +
                    "service not running? Starting the registry.");
            try {
                LocateRegistry.createRegistry(1099);
                Naming.rebind(rmiResource, remoteManager);
                logger.debug("RMI Registry started and remote manager registered");
            } catch (RemoteException e2) {
                logger.error("Failed to start RMI registry or register RemoteManager!");
                throw new RemoteException("rebind: " + e2.getMessage());
            } catch (MalformedURLException e2) {
                throw new RuntimeException("Cannot happen: " + e.getMessage());
        logger.debug("RMI set up successfully");And client code:
            IRemoteManager remoteManager = (IRemoteManager)Naming.lookup(RemoteManager
                    .getRMIResource("127.0.0.1", 1099));Trying set a RMISecurityManager breaks tomcat horribly by the way, but since RMI works with a fresh tomcat startup, I suppose there's no problems there.

Answer 1

Hi all!
I get the same Exception using Tomcat 5.5. When registering an object outside tomcat lookup works fine. Only when registering an object inside a webapp!
Would be great if anyone got a tip to solve it!
Greetings...