[JAVA] RemoteException nella registrazione del servizio RMI

[tiduslion]

Salve a tutti,
ho scritto un programmino che utilizza il rmiregistery, solo che quando arriva a registrare il servizio (ovvero al comando Naming.rebind(nomeservizio,serverRMI); ) in esecuzione si generano le seguenti eccezioni:

Server RMI "Server": RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: RemOp
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: RemOp
	at sun.rmi.server.UnicastServerRef.oldDispatch(Unknown Source)
	at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
	at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source)
	at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
	at sun.rmi.server.UnicastRef.invoke(Unknown Source)
	at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
	at java.rmi.Naming.rebind(Unknown Source)
	at ServerImpl.main(ServerImpl.java:100)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: RemOp
	at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
	at sun.rmi.server.UnicastServerRef.oldDispatch(Unknown Source)
	at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
	at sun.rmi.transport.Transport$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: RemOp
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at sun.rmi.server.LoaderHandler.loadProxyInterfaces(Unknown Source)
	at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
	at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
	at java.rmi.server.RMIClassLoader$2.loadProxyClass(Unknown Source)
	at java.rmi.server.RMIClassLoader.loadProxyClass(Unknown Source)
	at sun.rmi.server.MarshalInputStream.resolveProxyClass(Unknown Source)
	at java.io.ObjectInputStream.readProxyDesc(Unknown Source)
	at java.io.ObjectInputStream.readClassDesc(Unknown Source)
	at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
	at java.io.ObjectInputStream.readObject0(Unknown Source)
	at java.io.ObjectInputStream.readObject(Unknown Source)
	... 12 more

ho gia a provato a cercare la soluzione sul forum o su intenet ma ho trovato poco e non mi ha aiutato

PS: stessa cosa succede anche se non esegue eclipse ovvero se eseguo prima javac per le classi poi genero lo stub e lo skeleton con rmic -vcompat classeServer
PS2: ovviamente ho l'rmiregistry avviato in locale su un altra shell

[tiduslion]

ah mi sono dimenticato di dire che invece se creo un RMIRegistry con il comando LocalRegistry.createRegistery(port);
funziona tutto a modo ....

[tiduslion]

ok l'errore era talmente banale che a scrivere la soluzione mi vergogno ma va bhe casomai puo servire anche a qualcun altro percio:

compilazione:
Lato server:

javac <classi del server>
rmic -vcompat <classe che implementa il server (ovvero la classe che implementa l'interfaccia che estende Remote))
java <classe server>

Lato client:

javac <classi client>
java <classi client>

IMPORTANTE (ed ecco dove sbagliavo io):
l'rmiregistry lo dovete lanciare dalla cartella in cui lanciate le altre classi.
Ovvero aprendo una nuova shell per rmiregistry:

cd <cartella dove sono i file.class del server >
rmiregistry [porta]

[porta]= porta d'ascolto del rmiregistry, se non viene messo questo valore di default è 1099

[alka]

Ho spostato la discussione nel forum dedicato a Java.
In futuro, poni qui le tue domande relative a questo linguaggio.

Ciao!