您是否尝试过清除当前会话并创建一个新会话？这会迫使Hibernate重新查询数据库以获取当前序列值。
换句话说，您可以使用Session.flush()和Session.clear()方法：

Session session = sessionFactory.openSession();
Transaction transaction = session.beginTransaction();

// Perform some operations that use the id cache

session.flush();
session.clear();

// Perform some more operations that use the id cache

transaction.commit();
session.close();

或者您可以使用EntityManager.refresh()，它将刷新数据库中示例的状态，并在此过程中使用当前序列值更新内部缓存：

EntityManager em = entityManagerFactory.createEntityManager();
em.getTransaction().begin();

// Perform some operations that use the id cache

em.refresh(entity);

// Perform some more operations that use the id cache

em.getTransaction().commit();
em.close();