@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);
}
}
@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);
}
}
