需要 import org.hibernate.Session;

EntityManager entityManager = entityManagerFactory.createEntityManager();
        try{
            EntityTransaction transaction = entityManager.getTransaction();
            transaction.begin();
            Session session = (Session) entityManager.getDelegate();
            session.setFlushMode(FlushMode.MANUAL);
            Query query = entityManager.createQuery("delete from PropertyView");
            query.executeUpdate();
            for (PropertyView pv :
                    propertyViewList) {
                session.save(pv);
            }
            session.flush();
            session.clear();
            transaction.commit();
        }catch (Exception e){
            throw  e;
        }finally {
            entityManager.close();