Пример #1
0
  @Test
  public void test01() {
    Session session = null;
    try {
      session = HibernateUtil.openSession();
      session.beginTransaction();
      // 这个是悲观锁   加LockOptions.UPGRADE
      // Student stu =(Student) session.load(Student.class, 1,LockOptions.UPGRADE);
      Student stu = (Student) session.load(Student.class, 1);
      stu.setName("王亚楠");

      session.getTransaction().commit();
    } catch (Exception e) {
      e.printStackTrace();
      if (session != null) {
        session.getTransaction().rollback();
      }
    } finally {
      HibernateUtil.close(session);
    }
  }
Пример #2
0
  @Test
  public void test02() {
    Session session = null;
    try {
      session = HibernateUtil.openSession();
      session.beginTransaction();

      // Student stu =(Student) session.load(Student.class, 1,LockOptions.UPGRADE);
      Student stu = (Student) session.load(Student.class, 1);
      // 乐观锁会提示异常
      // org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction
      // (or unsaved-value mapping was incorrect): [cn.buaa.model.Student#1]
      stu.setSex("男");

      session.getTransaction().commit();
    } catch (Exception e) {
      e.printStackTrace();
      if (session != null) {
        session.getTransaction().rollback();
      }
    } finally {
      HibernateUtil.close(session);
    }
  }