Spring 3 + Quartz 1.8.6实现定时任务，quartz1.8.6,在本文中，我们使用Spr

Spring 3 + Quartz 1.8.6实现定时任务，quartz1.8.6,在本文中，我们使用Spr

在本文中，我们使用Spring3+Quartz实现定时任务。spring中定义了一些接口来支持Quartz，可以使你的业务逻辑类和Quartz解耦。

这个例子中使用了如下maven的依赖项：

<dependencies>    <!-- Spring 3 dependencies -->    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-core</artifactId>        <version>3.1.2.RELEASE</version>    </dependency>    <!-- QuartzJobBean in spring-context-support.jar -->    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context-support</artifactId>        <version>3.1.2.RELEASE</version>    </dependency>    <!-- Spring + Quartz need transaction -->    <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-tx</artifactId>        <version>3.1.2.RELEASE</version>    </dependency>    <!-- Quartz framework -->    <dependency>        <groupId>org.quartz-scheduler</groupId>        <artifactId>quartz</artifactId>        <version>1.8.6</version>    </dependency></dependencies>

添加依赖之后需要创建一个java类，该类完成要执行的定时任务。

File : RunMeTask.java

package com.mkyong.common;public class RunMeTask {    public void printMe() {        System.out.println("Spring 3 + Quartz 1.8.6 ~");    }}

有了要执行的任务，我们需要声明Quartz Scheduler job。

使用spring有两种方法来声明Quartz的job

方法一是使用MethodInvokingJobDetailFactoryBean类

<bean id="runMeJob"     class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">    <property name="targetObject" ref="runMeTask" />    <property name="targetMethod" value="printMe" /></bean>

方法二是从org.springframework.scheduling.quartz.QuartzJobBean类继承，如下RumMeJob类实现

File : RunMeJob.java

package com.mkyong.common;import org.quartz.JobExecutionContext;import org.quartz.JobExecutionException;import org.springframework.scheduling.quartz.QuartzJobBean;public class RunMeJob extends QuartzJobBean {    private RunMeTask runMeTask;    public void setRunMeTask(RunMeTask runMeTask) {        this.runMeTask = runMeTask;    }    protected void executeInternal(JobExecutionContext context)        throws JobExecutionException {        runMeTask.printMe();    }}

Configure the target class via jobClass and method to run via jobDataAsMap.

<bean name="runMeJob" class="org.springframework.scheduling.quartz.JobDetailBean">    <property name="jobClass" value="com.mkyong.common.RunMeJob" />    <property name="jobDataAsMap">        <map>            <entry key="runMeTask" value-ref="runMeTask" />        </map>    </property></bean>

配置Quartz触发器来定义执行调度任务的时机。支持两种类型的触发器。

一种是SimpleTrigger，你可以指定任务的开始时间，结束时间以及重复的间隔。

        <!-- Simple Trigger, run every 5 seconds -->    <bean id="simpleTrigger"                 class="org.springframework.scheduling.quartz.SimpleTriggerBean">        <property name="jobDetail" ref="runMeJob" />        <property name="repeatInterval" value="5000" />        <property name="startDelay" value="1000" />    </bean>

另一种是CronTrigger，这种方式类似于linux的crontab的语法

    <bean id="cronTrigger"        class="org.springframework.scheduling.quartz.CronTriggerBean">        <property name="jobDetail" ref="runMeJob" />        <property name="cronExpression" value="0/5 * * * * ?" />    </bean>

linux的crontab表达式是非常强大的，你可以参考下面两篇文章http://en.wikipedia.org/wiki/CRON_expressionhttp://www.quartz-scheduler.org/docs/examples/Example3.html

最后一步需要创建SchedulerFactoryBean来定义执行的任务，和任务的触发时机。

   <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">    <property name="jobDetails">       <list>          <ref bean="runMeJob" />       </list>    </property>    <property name="triggers">        <list>        <ref bean="simpleTrigger" />        </list>    </property>   </bean>

完整的Spring配置文件如下

<beans xmlns="http://www.springframework.org/schema/beans"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">    <bean id="runMeTask" class="com.mkyong.common.RunMeTask" />    <!-- Spring Quartz -->    <bean name="runMeJob" class="org.springframework.scheduling.quartz.JobDetailBean">        <property name="jobClass" value="com.mkyong.common.RunMeJob" />        <property name="jobDataAsMap">          <map>            <entry key="runMeTask" value-ref="runMeTask" />          </map>        </property>    </bean>    <!--     <bean id="runMeJob"             class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">         <property name="targetObject" ref="runMeTask" />         <property name="targetMethod" value="printMe" />     </bean>     -->    <!-- Simple Trigger, run every 5 seconds -->    <bean id="simpleTrigger"                 class="org.springframework.scheduling.quartz.SimpleTriggerBean">        <property name="jobDetail" ref="runMeJob" />        <property name="repeatInterval" value="5000" />        <property name="startDelay" value="1000" />    </bean>    <!-- Cron Trigger, run every 5 seconds -->    <bean id="cronTrigger"                 class="org.springframework.scheduling.quartz.CronTriggerBean">        <property name="jobDetail" ref="runMeJob" />        <property name="cronExpression" value="0/5 * * * * ?" />    </bean>    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">        <property name="jobDetails">            <list>                <ref bean="runMeJob" />            </list>        </property>        <property name="triggers">            <list>                <ref bean="simpleTrigger" />            </list>        </property>    </bean></beans>

你可以通过下面的类来运行示例：

package com.mkyong.common;import org.springframework.context.support.ClassPathXmlApplicationContext;public class App {    public static void main( String[] args ) throws Exception    {        new ClassPathXmlApplicationContext("Spring-Quartz.xml");    }}

控制台输出内容类似：

Jul 25, 2012 3:23:09 PM org.springframework.scheduling.quartz.SchedulerFactoryBean startSchedulerINFO: Starting Quartz Scheduler nowSpring 3 + Quartz 1.8.6 ~ //run every 5 secondsSpring 3 + Quartz 1.8.6 ~

您可以下载本文的源码。