Spring EntityManager Hibernate异常处理

    @Repository("mscoutService")
    public class MScoutServiceImpl implements MScoutService, Serializable {

        @PersistenceContext
        private EntityManager em;

...
        @Override
        @Transactional
        public void deleteMission(Long missionId) {
            try {
                Mission mis = em.find(Mission.class, missionId);
                em.remove(mis);
            } catch (Exception e) {
                handle_exception();
            }
        }