用Spring做的定时器

<bean id="sayHelloTask" class="com.aykj.c2c.utils.SayHelloTask"></bean><bean id="scheduledTask" class="org.springframework.scheduling.timer.ScheduledTimerTask"><property name="timerTask" ref="sayHelloTask"/><!-- 任务执行周期 2m 关于一些任务的参数请参考JDK doc文档和Spring相关文档 --><property name="period"><value>300000</value></property><!-- 延时1m 执行任务 --><property name="delay"><value>1000</value></property></bean><!-- 启动定时器 --><bean id="timerBean" class="org.springframework.scheduling.timer.TimerFactoryBean"><property name="scheduledTimerTasks"><list><ref bean="scheduledTask"/></list></property></bean> package com.aykj.c2c.utils;import java.util.Iterator;import java.util.List;import java.util.TimerTask;import org.hibernate.Query;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import com.aykj.c2c.pojo.AykjUser;public class SayHelloTask extends TimerTask { Configuration cfg = new Configuration().configure("com/aykj/command/hibernate.cfg.xml"); SessionFactory factory = cfg.buildSessionFactory(); Session session = factory.openSession(); String hql = "from AykjUser"; String hqls = "from AykjShop"; AykjUser aykjUser = null; Query query = null; int a = 0; public void run() { query = session.createQuery(hql); query.list().iterator(); query = session.createQuery(hql); query.list().iterator(); System.out.println(++a); System.gc(); } }