C:\Struts，Hibernate，Spring集成开发宝典\Struts，Hibernate，Spring集成开发宝典光盘...

package cn.hxex.hibernate.lock; import java.net.URL; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.LockMode; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; public class LockMain extends Thread{ private static Log log = LogFactory.getLog( LockMain.class ); // 静态Configuration和SessionFactory对象的实例（全局唯一的） private static Configuration configuration; private static SessionFactory sessionFactory; static { // 从默认的配置文件创建SessionFactory try { URL configURL = ClassLoader.getSystemResource( "cn/hxex/hibernate/lock/hibernate.cfg.xml" ); // 创建默认的Configuration对象的实例 configuration = new Configuration(); // 读取hibernate.properties或者hibernate.cfg.xml文件 configuration.configure( configURL ); // 使用静态变量来保持SessioFactory对象的实例 sessionFactory = configuration.buildSessionFactory(); } catch (Throwable ex) { // 输出异常信息 log.error("Building SessionFactory failed.", ex); ex.printStackTrace(); throw new ExceptionInInitializerError(ex); } } public static SessionFactory getSessionFactory() { return sessionFactory; } public void testPessimisticLock() { SessionFactory sf = LockMain.getSessionFactory(); Session session = sf.getCurrentSession(); session.beginTransaction(); Query query = session.createQuery("from User user"); query.setLockMode("user", LockMode.UPGRADE); List users = query.list(); for( int i=0; i<users.size(); i++ ) { System.out.println( users.get( i ) ); } session.getTransaction().commit(); } public void testOptimisticLock() { SessionFactory sf = LockMain.getSessionFactory(); Session session = sf.openSession(); Transaction tx = session.beginTransaction(); User userV1 = (User)session.load( User.class, "1" ); // 等第二个进程执行 try { sleep( 3000 ); } catch (InterruptedException e) { e.printStackTrace(); } userV1.setAge(new Integer(32)); tx.commit(); session.close(); } public void run() { testOptimisticLock(); } public static void main(String[] args) { // LockMain main = new LockMain(); // main.testPessimisticLock(); LockMain main1 = new LockMain(); main1.start(); LockMain main2 = new LockMain(); main2.start(); } }