Hibernate Serialization Exceptions when deploying

plutonianelephant · **Joined:** Tue Nov 15, 2005 6:56 pm **Posts:** 39

I'm using Hibernate3.1. I generated my POJOs using hibernate-tools3.1-beta2

My pojo generation worked but I'm gettting hibernate serialization exceptions when starting my application in JBOSS.

The exceptions look like:

Code:

org.hibernate.HibernateException: org.hibernate.type.SerializationException: could not deserialize
....
Caused by: java.io.InvalidClassException: org.dom4j.tree.AbstractNode; local class incompatible: stream classdesc serialVersionUID = 4188621179618565246, local class serialVersionUID = 4436254242831845461
   at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:519)
   at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1546)
   at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
   at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1546)
   at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
   at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1546)
   at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
   at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1546)
   at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
   at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
   at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
   at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
   at org.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:204)

Anybody know what the problem might be?

Thanks.

jkares · **Posted:** Fri Dec 16, 2005 3:02 am

it seems that Your JBoss uses different version of Hibernate fro deserialization of an object than it was serialized I guess ... You did it with 3.1 but JBoss uses 3.0.x ?! ... and the problem might be that they have a different version of the dom4j.jar ... am I right ?!

plutonianelephant · **Joined:** Tue Nov 15, 2005 6:56 pm **Posts:** 39

I think you're right but not 100% sure. I know in our build process we make sure we copy the version of the Hibernate3.jar file into our deployment to make sure we use the same version in JBOSS. So I think we're ok there. I did notice that the new Hibernate-tools3.1 used a newer version of the dom4j.jar file than we had. I copied that version into our Jboss deployment and I got passed the errors only to encounter different errors when starting a custom HibernateService we have. I'm not sure if this is an improvement or not?!? I think it is. I've posted another topic regarding that problem at http://forum.hibernate.org/viewtopic.ph ... highlight= if you want to take a look.

I appreciate the help. Thanks!