quartz+spring 实现多任务动态定时器问题

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"

    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"

    xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"

    xsi:schemaLocation="

            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd

            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd

            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd

            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd

            http://www.springmodules.org/schema/ehcache http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd">





    <!-- The Task Bean-->

    <bean id="myTask" class="com.xxx.example.dynamicjob.MyTask" />



    <!-- The quartz scheduler configuration -->

    <bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"/>



</beans>

　　

package com.xxx.example.dynamicjob;



    public class MyTask

    {

        public void performAction() {

            System.out.println("Hey, you reached me...:)");

        }          

    }

　　

package com.xxx.example.dynamicjob;

import org.quartz.JobDetail;

import org.quartz.Scheduler;

import org.springframework.beans.factory.xml.XmlBeanFactory;

import org.springframework.core.io.ClassPathResource;

import org.springframework.scheduling.quartz.CronTriggerBean;

import org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean;



public class DynamicJobExample {



    /**

    * @param args

    */

    public static void main(String[] args) {



                ClassPathResource res = new ClassPathResource("dynamic-jobs.xml");

                XmlBeanFactory factory = new XmlBeanFactory(res);



                //get the quartzFactory bean

                Scheduler scheduler = (Scheduler) factory.getBean("scheduler");



                //get the task bean

                MyTask myTask = (MyTask) factory.getBean("myTask");



                try {

                // create JOB

                MethodInvokingJobDetailFactoryBean jobDetail = new MethodInvokingJobDetailFactoryBean();

                jobDetail.setTargetObject(myTask);

                jobDetail.setTargetMethod("performAction");

                jobDetail.setName("MyJobDetail");

                jobDetail.setConcurrent(false);

                jobDetail.afterPropertiesSet();



                /* SimpleTriggerBean trigger = new SimpleTriggerBean();

                trigger.setBeanName("MyTrigger");

                trigger.setJobDetail((JobDetail) jobDetail.getObject());

                trigger.setRepeatInterval(5000);

                trigger.afterPropertiesSet();

                */



                // create CRON Trigger

                CronTriggerBean cronTrigger = new CronTriggerBean();

                cronTrigger.setBeanName("CRON0001");



                // Execute after each 5 second

                String expression = "5 * * * * ?";

                cronTrigger.setCronExpression(expression);

                cronTrigger.afterPropertiesSet();



                //scheduler.scheduleJob(jobDetail, cronTrigger);



                scheduler.scheduleJob((JobDetail) jobDetail.getObject(), cronTrigger);



                // Start Scheduler        

                scheduler.start();



                } catch (Exception e) {                      

                    e.printStackTrace();

                } 

    }

}