org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [hibernate.student1#0]
这是报错的信息
这是测试类
public class GSTest {
private SessionFactory sessionFactory;
private Session session;
private Transaction transaction;
@Before
public void init(){
//创建配置对象
Configuration config=new Configuration().configure();
//config.addClass(Student.class);
//创建服务注册对象
ServiceRegistry serviceRegistry =new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();
//创建会话工厂对象
sessionFactory=config.buildSessionFactory(serviceRegistry);
//会话对象
session=sessionFactory.openSession();
//开启事物
transaction=session.beginTransaction();
}
@After
public void destroy(){
transaction.commit();//提交事物
session.close();//关闭会话
sessionFactory.close();//关闭会话工厂
}
@Test
public void testSaveStudent(){
Grade g1=new Grade("java一班","java软件开发一班");
student1 stu1=new student1("王五","男");
student1 stu2=new student1("李四","男");
g1.getStudents().add(stu1);
g1.getStudents().add(stu2);
session.save(g1);
session.save(stu1);
session.save(stu2);
}
}
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