Applet client to JBoss EJB

[041946]

I am trying to get a simple Applet client to talk to an EJB. I have encountered many problems and have worked through most of them. I know people at JBoss claim this should work and even provide simple code examples to demonstrate. Unfortunately, none of the code examples work.

In my ongoing attempt to make an applet talk to an ejb, I've encountered the following problem which I cannot solve. Can anyone help in deciphering the meaning of this problem and finding a solution?

Below is the stack I get:


javax.naming.CommunicationException. Root exception is java.io.InvalidClassException: org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy; Local class not compatible: stream classdesc serialVersionUID=432426690456622923 local class serialVersionUID=6136307389075444997

at java.io.ObjectStreamClass.validateLocalClass(Unknown Source)

at java.io.ObjectStreamClass.setClass(Unknown Source)

at java.io.ObjectInputStream.inputClassDescriptor(Unknown Source)

at java.io.ObjectInputStream.readObject(Unknown Source)

at java.io.ObjectInputStream.readObject(Unknown Source)

at java.io.ObjectInputStream.inputClassDescriptor(Unknown Source)

at java.io.ObjectInputStream.readObject(Unknown Source)

at java.io.ObjectInputStream.readObject(Unknown Source)

at java.io.ObjectInputStream.inputObject(Unknown Source)

at java.io.ObjectInputStream.readObject(Unknown Source)

at java.io.ObjectInputStream.inputClassFields(Unknown Source)

at java.io.ObjectInputStream.defaultReadObject(Unknown Source)

at java.io.ObjectInputStream.inputObject(Unknown Source)

at java.io.ObjectInputStream.readObject(Unknown Source)

at java.io.ObjectInputStream.readObject(Unknown Source)

at java.rmi.MarshalledObject.get(Unknown Source)

at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:299)

at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:279)

at javax.naming.InitialContext.lookup(Unknown Source)

at ejbTest.AppletEjbCaller.runIt(AppletEjbCaller.java:95)

at ejbTest.AppletEjbCaller.init(AppletEjbCaller.java:60)

at sun.applet.AppletPanel.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

[ahjulsta]

Your problem is most likely caused by having different versions of org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy in the classpath for your applet and your server.

When I get similar errors, taking a second look at the classpaths often reveales the problem.