Getting ClassCastException when returning Object from sessio

[[buckman]]

Hi all,

I am running JBoss in one container, and servlet container in another. I can get the EJB no problem, call methods, even pass Object parameters no problem. But for some reason, when I try to return an Object (my own class) back from an EJB as a result, it won't let me! It keeps saying ClassCastException on the servlet container output. Actually, since its impossible right now to debug multi-tier apps, I really don't know if its the servlet container or the jboss container causing the problem. The object being returned is the same class I use to pass in as a parameter to another method which works fine. Also, if I return boolean from this method, it works fine as well. It just seems to be having a problem sending the class I need back.

Thanks for any help.

[hstech]

Hi buckman,

Your going to have to post some code.

Does the return class implement Serializable, or at least extend a class that does?

Cheers,
Aaron.

[oli306]

hi,

did you finally find out what was the problem ?

I have exactly the same issue.

thanks.

[oli306]

actually, by calling the session ejb from my servlet, I retrieve an object of type OBJECT instead of type 'myclass'.

But if I call methods on this object, I get the right result.
If I ask for class name, It says 'myclass' !!!
But when It comes to casting: class cast exception.

very strange. It's really a 'myclass' object but I cannot cast it to 'myclass'.

any idea on this topic ?

[bebe1234]

Hi!

I've faced the very same problem. Have you find any solution? At the moment I think that it is an issue of classloaders. But is it a bug or a feature??

Has anyone solved this ClassCastException issue? I'm going with JBoss 2.4.3.

Cheers, Pekka

[oli306]

I found a half-solution.

If I run tomcat and jboss on the same machine, just add the deployed jar file to the classpath.
But for 2 different machines, that's not a solution.
And, it's not very pretty.
I know a bug has been reported: search for 'A BUG about ClassCastException in jboss-3.0.0beta_tomcat-4.0.2.tgz ' in this forum.

[malhar]

Could you please tell me how do i set the classpath to the jar which i suppose to deploy?
There would be 2 jar files for catalina and jboss so what would be the correct way of setting up these classpath to the sepearte containers (catalina and jboss) ?