Spring结合Quartz实现多任务定时调用

转载自：http://blog.sina.com.cn/s/blog_4d6c7dea0100utks.html

Quartz框架提供了丰富的任务调度支持，比如，在何时执行何种任务，它是一个开源的由OpenSymphony维护的项目，开发者能够在Java EE，或单独的Java SE应用中使用它。无论是简单的任务调度，还是复杂的企业级应用，Quartz都能够很好地胜任。其中，这些任务可以是普通POJO，甚至还可以是EJB 3.0组件。
如果开发者需要开发如下方面的应用，则Quartz是理想的选择。
◆驱动工作流：比如，如果新创建的流程任务需要在2小时内处理完，则在2小时后Quartz会检查订单是否成功处理。如果没有处理，则Quartz会依据工作流定义的规则来对订单进行处理，销毁它，或者进行其他处理。
◆系统维护工作：比如，在每个工作日的固定时间将RDBMS中的内容导出为XML文件。
<wbr><wbr><wbr><wbr><wbr><wbr>Spring 2.0提供了org.springframework.scheduling.quartz包，以支持Quartz任务调度集成。为提供用户的任务，开发者实现的类必须继承于quartz.QuartzJobBean抽象类。QuartzJobBean是Quartz中org.quartz.Job接口的简单实现（子类），Spring为简化Job接口的实现而提供了QuartzJobBean类。QuartzJobBean同Java 2 SDK中的TimerTask类似，用于定义任务本身。其中，executeInternal()方法定义待执行的任务，这同TimerTask中的 run()类似。<br><wbr><wbr><wbr><wbr><wbr><wbr>为了指定更复杂的任务调度规则，开发者要使用Spring提供的CronTriggerBean，它是Quartz中 org.quartz.CronTrigger的子类，Spring 2.0为简化CronTrigger子类的开发而提供了CronTriggerBean。CronTriggerBean比 SimpleTriggerBean功能更强大，它能够控制任务执行的精确时间，比如，早上九点半需要执行某QuartzJobBean中给定的任务。借助于CronTriggerBean中的cronExpression属性能够设定任务的执行时机。<br><wbr><wbr><wbr><wbr><wbr><wbr>Quartz是一个强大的企业级任务调度框架，Spring中继承并简化了Quartz，下面就看看在Spring中怎样配置Quartz：首先我们来写二个被调度的类QuartzJob，及QuartzJobTwo，二个以上类似：<br><span style="color:#ff00ff">package com.writchie.quartz;<br> public class QuartzJob<br> {<br><wbr><wbr><wbr><wbr>public void work()<br><wbr><wbr><wbr><wbr>{<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>System.out.println("吴理琪提示您：Spring Quartz的任务调度1被调用！");<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>//定时调用的业务逻辑<br><wbr><wbr><wbr><wbr>}<br> }<br></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></span><br><span style="color:#ff00ff">package com.writchie.quartz;<br> public class QuartzJobTwo<br> {<br><wbr><wbr><wbr><wbr>public void work()<br><wbr><wbr><wbr><wbr>{<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>System.out.println("吴理琪提示您：Spring Quartz的任务调度2被调用 ！");<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>//定时调用的业务逻辑<br><wbr><wbr><wbr><wbr>}<br> }<br></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></span><br> Spring的配置文件applicationContext.xml：<br><span style="color:#0000ff">&lt;?xml version="1.0" encoding="UTF-8"?&gt;<br> &lt;beans<br> xmlns="</span></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>http://www.springframework.org/schema/beans<wbr><span style="font-size:12px; color:#0000ff">"<br> xmlns:xsi="</span><a href="http://www.w3.org/2001/XMLSchema-instance" target="_blank"><span style="font-size:12px; color:#0000ff">http://www.w3.org/2001/XMLSchema-instance</span></a><wbr><span style="font-size:12px; color:#0000ff">"<br> xsi:schemaLocation="</span><a href="http://www.springframework.org/schema/beans" target="_blank"><span style="font-size:12px; color:#0000ff">http://www.springframework.org/schema/beans</span></a><wbr><a href="http://www.springframework.org/schema/beans/spring-beans-2.5.xsd" target="_blank"><span style="font-size:12px; color:#0000ff">http://www.springframework.org/schema/beans/spring-beans-2.5.xsd</span></a><wbr><span style="font-size:12px"><span style="color:#0000ff">"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;!-- 要调用的工作类 --&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;bean id="quartzJob" class="com.writchie.quartz.QuartzJob"&gt;&lt;/bean&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;bean id="quartzJobTwo" class="com.writchie.quartz.QuartzJobTwo"&gt;&lt;/bean&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;!-- 可继续加新的任务 <wbr><wbr>--&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;!-- 要调用的工作类结束 --&gt;<br><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;!-- 定义调用对象和调用对象的方法 --&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;bean id="jobtask" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailF<wbr>actoryBean"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;!-- 调用的类 --&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;property name="targetObject"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;ref bean="quartzJob"/&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;/property&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;!-- 调用类中的方法 --&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;property name="targetMethod"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;value&gt;work&lt;/value&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;/property&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;/bean&gt;<br><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;bean id="jobtask2" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailF<wbr>actoryBean"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;!-- 调用的类 --&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;property name="targetObject"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;ref bean="quartzJobTwo"/&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>&lt;/property&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></span></span></wbr></wbr></wbr></wbr>