hibernate session.merge() 的用法

[b]session.merge() [/b]
相当于session.save().
Session session = sessionFactory.getCurrentSession();
session.beginTransaction();
Student s = (Student)session.get(Student.class, 1);
s.setName("zhangsaAAAAn6");
session.getTransaction().commit();

s.setName("z4");

Session session2 = sessionFactory.getCurrentSession();
session2.beginTransaction();
session2.merge(s);
session2.getTransaction().commit();

将对象的状态从脱管态变成持久态。