Hi,
I've made a class ClientServer which extends Thread implements
Remote, Serializable to bind it with RMI.
Inside, i've got this attribute : private transient static Logger
LOG = Logger.getLogger(ClientServer.class);
I've made another similar class ClientPartenaire which extends
UnicastRemoteObject implements Remote (not a thread)
Inside, i've got this attribute : private transient static Logger
LOG = Logger.getLogger(ClientPartenaire.class);
Then, I've generated stubs for both classes.
Thus, I try to serialize it while using RMI server.
When I do
Naming.rebind("server", new ClientPartenaire ())
everything works well
but when I do
Naming.rebind("server", new ClientServer("demeter"));
I get this stacktrace : java.rmi.ServerError: Error occurred in
server thread; nested exception is:
java.lang.NoClassDefFoundError: Lorg/apache/log4j/Logger;
at
sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:382)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall
(Transport.java:149)
at
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java
:595)
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.bind(Unknown Source)
at java.rmi.Naming.bind(Unknown Source)
at i2.application.demeter.client.RunClient.main(RunClient.java:61)
Caused by: java.lang.NoClassDefFoundError: Lorg/apache/log4j/Logger;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2232)
at java.lang.Class.getDeclaredField(Class.java:1852)
at java.io.ObjectStreamClass.getDeclaredSUID
(ObjectStreamClass.java:1555)
at java.io.ObjectStreamClass.access$600(ObjectStreamClass.java:47)
at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:381)
at java.security.AccessController.doPrivileged(Native Method)
at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:373)
at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:268)
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:504)
If I comment all lines using attribute LOG and delete attribute LOG,
keeping the import for Logger class, I get this error again. Then, if
I delete the import, the error disapears !
Furthermore, if I use java.util.Logging, I do not have this error again.
Any idea why do I get this error ?
Thanks a lot for your help :)
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