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2.1:

Code between sessionFactory.openSession() and session.close():


net.sf.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): com.transfer.object.ArtefatoTO:


MySQL 4.1

I guess that you have used generator type assigned and did not assign ID walue before saving your object. If you want Hibernate to create ID automatically then you need to specify different ID generator and set unsaved-value='null'

http://www.hibernate.org/hib_docs/v3/re ... aration-id