hibernate之保存对象

如例：

package util;import org.hibernate.Session;import org.hibernate.Transaction;import pojo.User;public class Manager {public static void main(String[] args) {User user = new User();user.setAge(18);user.setName("ggg");user.setPassword("666");//瞬时状态System.out.println("瞬时状态时，对象ID:" + user.getId());Session session = HibernateUtil.getSessionFactory().openSession();Transaction transaction = session.beginTransaction();session.save(user);//持久状态System.out.println("持久状态时，对象ID:" + user.getId());transaction.commit();session.close();//脱管状态System.out.println("脱管状态时，对象ID:" + user.getId());}} 

 

输出日志：

瞬时状态时，对象ID:null持久状态时，对象ID:402881792b69e6df012b69e6e0eb0001Hibernate: insert into A_USER (NAME, PASSWORD, AGE, ID) values (?, ?, ?, ?)脱管状态时，对象ID:402881792b69e6df012b69e6e0eb0001