我遇到错误:Exceptioninthread"main"org.hibernate.HibernateException:Couldnotobtaintransaction-synchronizedSessionforcurrentthread主要ppService.deleteProductPart(cPartId,productId);@Service("productPartService")@OverridepublicvoiddeleteProductPart(intcPartId,intproductId){productPartDao.deleteProductPart