Hibernate_持久态对象

Hibernate会自动将持久态对象更新到数据库

@Testpublic void fun9() {//1.读取配置文件Configuration con = new Configuration().configure();//2.根据配置创建factorySessionFactory sf = con.buildSessionFactory();//3.通过factory获取操作数据库的session对象Session session = sf.openSession();Transaction transaction = session.beginTransaction();//4.操作数据库User u = (User)session.get(User.class, 5);u.setUserName("hehe");//session.update(u);  多余--->hibernate自动更新持久对象到数据库transaction.commit();//5.关闭资源session.close();sf.close();}