Quartz动态配置表达的方法

时间：2015-10-21 18:58:18 阅读：282 评论：0 收藏：0 [点我收藏+]

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在项目中有一个需求，需要灵活配置调度任务时间，并能自由启动或停止调度。
有关调度的实现我就第一就想到了Quartz这个开源调度组件，因为很多项目使用过，Spring结合Quartz静态配置调度任务时间，非常easy。比如：每天凌晨几点定时运行一个程序，这只要在工程中的spring配置文件中配置好spring整合quartz的几个属性就好。

Spring配置文件

Xml代码??

<bean?id="jobDetail"?class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">??
<property?name="targetObject"?ref="simpleService"?/>??
<property?name="targetMethod"?value="test"?/>??
</bean>??
<bean?id="cronTrigger"?class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">??
<property?name="jobDetail"?ref="jobDetail"?/>??
<property?name="cronExpression"?value="0?0/50?*???*?*?*"?/>??
</bean>??
<bean??id="schedulerTrigger"?class="org.springframework.scheduling.quartz.SchedulerFactoryBean">??
<property?name="triggers">??
<list>??
<ref?bean="cronTrigger"/>???????
</list>??
</property>??
</bean>???

?这种配置就是对quartz的一种简单的使用了，调度任务会在spring启动的时候加载到内存中，按照cronTrigger中定义的 cronExpression定义的时间按时触发调度任务。但是这是quartz使用"内存"方式的一种配置，也比较常见，当然对于不使用spring的项目，也可以单独整合quartz。方法也比较简单，可以从quartz的doc中找到配置方式，或者看一下《Quartz Job Scheduling Framework 》。

但是对于想持久化调度任务的状态，并且灵活调整调度时间的方式来说，上面的内存方式就不能满足要求了，正如本文开始我遇到的情况，需要采用数据库方式集成 Quartz，这部分集成其实在《Quartz Job Scheduling Framework 》中也有较为详细的介绍，当然doc文档中也有，但是缺乏和spring集成的实例。

一、需要构建Quartz数据库表，建表脚本在Quartz发行包的docs\dbTables目录，里面有各种数据库建表脚本，例子中采用的Quartz 2.2.1版本，使用H2内存数据库，执行了Quartz发行包的docs\dbTables\tables_h2.sql建表。

二、建立Maven project，完成后目录如下

技术分享
?

三、配置applicationContext.xml文件

Xml代码??

<?xml?version="1.0"?encoding="UTF-8"?>??
<beans?xmlns="http://www.springframework.org/schema/beans"??
????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"?xmlns:jdbc="http://www.springframework.org/schema/jdbc"??
????xmlns:context="http://www.springframework.org/schema/context"??
????xsi:schemaLocation="?????
????http://www.springframework.org/schema/beans?http://www.springframework.org/schema/beans/spring-beans.xsd??
???http://www.springframework.org/schema/jdbc?http://www.springframework.org/schema/jdbc/spring-jdbc.xsd??
???http://www.springframework.org/schema/context?http://www.springframework.org/schema/context/spring-context.xsd??
???">??
????<context:component-scan?base-package="com.sundoctor"?/>?????????
??????
????<jdbc:embedded-database?id="dataSource"?type="H2">??
????????<jdbc:script?location="classpath:db/tables_h2.sql"/>?????????
????</jdbc:embedded-database>??
</beans>??

?
这里只是配置了数据库连接dataSource，为了简单方便，我使用H2内存数据库，执行tables_h2.sql创建quartz数据库表，还没有涉及到quartz有关配置，下面且听我慢慢道来。

四、实现动态定时任务
? 什么是动态定时任务：是由客户制定生成的，服务端只知道该去执行什么任务，但任务的定时是不确定的（是由客户制定）。
这样总不能修改配置文件每定制个定时任务就增加一个trigger吧，即便允许客户修改配置文件，但总需要重新启动web服务啊，研究了下Quartz在Spring中的动态定时，发现

Xml代码??

<bean?id="cronTrigger"?class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">??
<property?name="jobDetail"?ref="jobDetail"?/>??
<property?name="cronExpression"?value="0?0/50?*???*?*?*"?/>??
</bean>???

? ?

中cronExpression是关键，如果可以动态设置cronExpression的值，就可以顺利解决问题了。这样我们就不能直接使用org.springframework.scheduling.quartz.CronTriggerFactoryBean，需要自己实现一个动态调度服务类，在其中构建CronTrigger或SimpleTrigger，动态配置时间。
动态调度服务接口：

Java代码??

package?com.sundoctor.quartz.service;??
?? ?
import?java.util.Date;??
?? ?
import?org.quartz.CronExpression;??
?? ?
public?interface?SchedulerService?{??
????/**?
?????*?根据?Quartz?Cron?Expression?调试任务?
?????*??
?????*?@param?cronExpression?
?????*????????????Quartz?Cron?表达式，如?"0/10?*?*???*?*?*"等?
?????*/??
????void?schedule(String?cronExpression);??
?? ?
????/**?
?????*?根据?Quartz?Cron?Expression?调试任务?
?????*??
?????*?@param?name?
?????*????????????Quartz?CronTrigger名称?
?????*?@param?cronExpression?
?????*????????????Quartz?Cron?表达式，如?"0/10?*?*???*?*?*"等?
?????*/??
????void?schedule(String?name,?String?cronExpression);??
?? ?
????/**?
?????*?根据?Quartz?Cron?Expression?调试任务?
?????*??
?????*?@param?name?
?????*????????????Quartz?CronTrigger名称?
?????*?@param?group?
?????*????????????Quartz?CronTrigger组?
?????*?@param?cronExpression?
?????*????????????Quartz?Cron?表达式，如?"0/10?*?*???*?*?*"等?
?????*/??
????void?schedule(String?name,?String?group,?String?cronExpression);??
?? ?
????/**?
?????*?根据?Quartz?Cron?Expression?调试任务?
?????*??
?????*?@param?cronExpression?
?????*????????????Quartz?CronExpression?
?????*/??
????void?schedule(CronExpression?cronExpression);??
?? ?
????/**?
?????*?根据?Quartz?Cron?Expression?调试任务?
?????*??
?????*?@param?name?
?????*????????????Quartz?CronTrigger名称?
?????*?@param?cronExpression?
?????*????????????Quartz?CronExpression?
?????*/??
????void?schedule(String?name,?CronExpression?cronExpression);??
?? ?
????/**?
?????*?根据?Quartz?Cron?Expression?调试任务?
?????*??
?????*?@param?name?
?????*????????????Quartz?CronTrigger名称?
?????*?@param?group?
?????*????????????Quartz?CronTrigger组?
?????*?@param?cronExpression?
?????*????????????Quartz?CronExpression?
?????*/??
????void?schedule(String?name,?String?group,?CronExpression?cronExpression);??
?? ?
????/**?
?????*?在startTime时执行调试一次?
?????*??
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*/??
????void?schedule(Date?startTime);??
?? ?
????void?schedule(Date?startTime,?String?group);??
?? ?
????/**?
?????*?在startTime时执行调试一次?
?????*??
?????*?@param?name?
?????*????????????Quartz?SimpleTrigger?名称?
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*/??
????void?schedule(String?name,?Date?startTime);??
?? ?
????void?schedule(String?name,?Date?startTime,?String?group);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度?
?????*??
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*?@param?endTime?
?????*????????????调度结束时间?
?????*/??
????void?schedule(Date?startTime,?Date?endTime);??
?? ?
????void?schedule(Date?startTime,?Date?endTime,?String?group);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度?
?????*??
?????*?@param?name?
?????*????????????Quartz?SimpleTrigger?名称?
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*?@param?endTime?
?????*????????????调度结束时间?
?????*/??
????void?schedule(String?name,?Date?startTime,?Date?endTime);??
?? ?
????void?schedule(String?name,?Date?startTime,?Date?endTime,?String?group);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度，重复执行repeatCount次?
?????*??
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*?@param?repeatCount?
?????*????????????重复执行次数?
?????*/??
????void?schedule(Date?startTime,?int?repeatCount);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度，重复执行repeatCount次?
?????*??
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*?@param?endTime?
?????*????????????调度结束时间?
?????*?@param?repeatCount?
?????*????????????重复执行次数?
?????*/??
????void?schedule(Date?startTime,?Date?endTime,?int?repeatCount);??
?? ?
????void?schedule(Date?startTime,?Date?endTime,?int?repeatCount,?String?group);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度，重复执行repeatCount次?
?????*??
?????*?@param?name?
?????*????????????Quartz?SimpleTrigger?名称?
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*?@param?endTime?
?????*????????????调度结束时间?
?????*?@param?repeatCount?
?????*????????????重复执行次数?
?????*/??
????void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount);??
?? ?
????void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount,?String?group);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度，重复执行repeatCount次，每隔repeatInterval秒执行一次?
?????*??
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*??
?????*?@param?repeatCount?
?????*????????????重复执行次数?
?????*?@param?repeatInterval?
?????*????????????执行时间隔间?
?????*/??
????void?schedule(Date?startTime,?int?repeatCount,?long?repeatInterval);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度，重复执行repeatCount次，每隔repeatInterval秒执行一次?
?????*??
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*?@param?endTime?
?????*????????????调度结束时间?
?????*?@param?repeatCount?
?????*????????????重复执行次数?
?????*?@param?repeatInterval?
?????*????????????执行时间隔间?
?????*/??
????void?schedule(Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval);??
?? ?
????void?schedule(Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval,?String?group);??
?? ?
????/**?
?????*?在startTime时执行调试，endTime结束执行调度，重复执行repeatCount次，每隔repeatInterval秒执行一次?
?????*??
?????*?@param?name?
?????*????????????Quartz?SimpleTrigger?名称?
?????*?@param?startTime?
?????*????????????调度开始时间?
?????*?@param?endTime?
?????*????????????调度结束时间?
?????*?@param?repeatCount?
?????*????????????重复执行次数?
?????*?@param?repeatInterval?
?????*????????????执行时间隔间?
?????*/??
????void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval);??
?? ?
????void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval,?String?group);??
?? ?
????/**?
?????*?暂停触发器?
?????*??
?????*?@param?triggerName?
?????*????????????触发器名称?
?????*/??
????void?pauseTrigger(String?triggerName);??
?? ?
????/**?
?????*?暂停触发器?
?????*??
?????*?@param?triggerName?
?????*????????????触发器名称?
?????*?@param?group?
?????*????????????触发器组?
?????*/??
????void?pauseTrigger(String?triggerName,?String?group);??
?? ?
????/**?
?????*?恢复触发器?
?????*??
?????*?@param?triggerName?
?????*????????????触发器名称?
?????*/??
????void?resumeTrigger(String?triggerName);??
?? ?
????/**?
?????*?恢复触发器?
?????*??
?????*?@param?triggerName?
?????*????????????触发器名称?
?????*?@param?group?
?????*????????????触发器组?
?????*/??
????void?resumeTrigger(String?triggerName,?String?group);??
?? ?
????/**?
?????*?删除触发器?
?????*??
?????*?@param?triggerName?
?????*????????????触发器名称?
?????*?@return?
?????*/??
????boolean?removeTrigdger(String?triggerName);??
?? ?
????/**?
?????*?删除触发器?
?????*??
?????*?@param?triggerName?
?????*????????????触发器名称?
?????*?@param?group?
?????*????????????触发器组?
?????*?@return?
?????*/??
????boolean?removeTrigdger(String?triggerName,?String?group);??
}??

?

动态调度服务实现类：

Java代码??

package?com.sundoctor.quartz.service;??
?? ?
import?java.text.ParseException;??
import?java.util.Date;??
import?java.util.UUID;??
?? ?
import?org.quartz.CronExpression;??
import?org.quartz.JobDetail;??
import?org.quartz.Scheduler;??
import?org.quartz.SchedulerException;??
import?org.quartz.TriggerKey;??
import?org.quartz.impl.triggers.CronTriggerImpl;??
import?org.quartz.impl.triggers.SimpleTriggerImpl;??
import?org.springframework.beans.factory.annotation.Autowired;??
import?org.springframework.stereotype.Service;??
?? ?
@Service("schedulerService")??
public?class?SchedulerServiceImpl?implements?SchedulerService?{??
?? ?
????private?static?final?String?NULLSTRING?=?null;??
????private?static?final?Date?NULLDATE?=?null;??
?? ?
????@Autowired??
????private?Scheduler?scheduler;??
????@Autowired??
????private?JobDetail?jobDetail;??
?? ?
????@Override??
????public?void?schedule(String?cronExpression)?{??
????????schedule(NULLSTRING,?cronExpression);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?String?cronExpression)?{??
????????schedule(name,?NULLSTRING,?cronExpression);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?String?group,?String?cronExpression)?{??
????????try?{??
????????????schedule(name,?group,?new?CronExpression(cronExpression));??
????????}?catch?(ParseException?e)?{??
????????????throw?new?IllegalArgumentException(e);??
????????}??
????}??
?? ?
????@Override??
????public?void?schedule(CronExpression?cronExpression)?{??
????????schedule(NULLSTRING,?cronExpression);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?CronExpression?cronExpression)?{??
????????schedule(name,?NULLSTRING,?cronExpression);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?String?group,?CronExpression?cronExpression)?{??
?? ?
????????if?(isValidExpression(cronExpression))?{??
?? ?
????????????if?(name?==?null?||?name.trim().equals(""))?{??
????????????????name?=?UUID.randomUUID().toString();??
????????????}??
?? ?
????????????CronTriggerImpl?trigger?=?new?CronTriggerImpl();??
????????????trigger.setCronExpression(cronExpression);??
?? ?
????????????TriggerKey?triggerKey?=?new?TriggerKey(name,?group);??
?? ?
????????????trigger.setJobName(jobDetail.getKey().getName());??
????????????trigger.setKey(triggerKey);??
?? ?
????????????try?{??
????????????????scheduler.addJob(jobDetail,?true);??
????????????????if?(scheduler.checkExists(triggerKey))?{??
????????????????????scheduler.rescheduleJob(triggerKey,?trigger);??
????????????????}?else?{??
????????????????????scheduler.scheduleJob(trigger);??
????????????????}??
????????????}?catch?(SchedulerException?e)?{??
????????????????throw?new?IllegalArgumentException(e);??
????????????}??
????????}??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime)?{??
????????schedule(startTime,?NULLDATE);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?String?group)?{??
????????schedule(startTime,?NULLDATE,?group);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime)?{??
????????schedule(name,?startTime,?NULLDATE);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime,?String?group)?{??
????????schedule(name,?startTime,?NULLDATE,?group);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?Date?endTime)?{??
????????schedule(startTime,?endTime,?0);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?Date?endTime,?String?group)?{??
????????schedule(startTime,?endTime,?0,?group);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime,?Date?endTime)?{??
????????schedule(name,?startTime,?endTime,?0);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime,?Date?endTime,?String?group)?{??
????????schedule(name,?startTime,?endTime,?0,?group);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?int?repeatCount)?{??
????????schedule(null,?startTime,?NULLDATE,?0);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?Date?endTime,?int?repeatCount)?{??
????????schedule(null,?startTime,?endTime,?0);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?Date?endTime,?int?repeatCount,?String?group)?{??
????????schedule(null,?startTime,?endTime,?0,?group);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount)?{??
????????schedule(name,?startTime,?endTime,?0,?0L);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount,?String?group)?{??
????????schedule(name,?startTime,?endTime,?0,?0L,?group);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?int?repeatCount,?long?repeatInterval)?{??
????????schedule(null,?startTime,?NULLDATE,?repeatCount,?repeatInterval);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval)?{??
????????schedule(null,?startTime,?endTime,?repeatCount,?repeatInterval);??
????}??
?? ?
????@Override??
????public?void?schedule(Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval,?String?group)?{??
????????schedule(null,?startTime,?endTime,?repeatCount,?repeatInterval,?group);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval)?{??
????????schedule(name,?startTime,?endTime,?repeatCount,?repeatInterval,?NULLSTRING);??
????}??
?? ?
????@Override??
????public?void?schedule(String?name,?Date?startTime,?Date?endTime,?int?repeatCount,?long?repeatInterval,?String?group)?{??
?? ?
????????if?(this.isValidExpression(startTime))?{??
?? ?
????????????if?(name?==?null?||?name.trim().equals(""))?{??
????????????????name?=?UUID.randomUUID().toString();??
????????????}??
?? ?
????????????TriggerKey?triggerKey?=?new?TriggerKey(name,?group);??
?? ?
????????????SimpleTriggerImpl?trigger?=?new?SimpleTriggerImpl();??
????????????trigger.setKey(triggerKey);??
????????????trigger.setJobName(jobDetail.getKey().getName());??
?? ?
????????????trigger.setStartTime(startTime);??
????????????trigger.setEndTime(endTime);??
????????????trigger.setRepeatCount(repeatCount);??
????????????trigger.setRepeatInterval(repeatInterval);??
?? ?
????????????try?{??
????????????????scheduler.addJob(jobDetail,?true);??
????????????????if?(scheduler.checkExists(triggerKey))?{??
????????????????????scheduler.rescheduleJob(triggerKey,?trigger);??
????????????????}?else?{??
????????????????????scheduler.scheduleJob(trigger);??
????????????????}??
????????????}?catch?(SchedulerException?e)?{??
????????????????throw?new?IllegalArgumentException(e);??
????????????}??
????????}??
????}??
?? ?
????@Override??
????public?void?pauseTrigger(String?triggerName)?{??
????????pauseTrigger(triggerName,?NULLSTRING);??
????}??
?? ?
????@Override??
????public?void?pauseTrigger(String?triggerName,?String?group)?{??
????????try?{??
????????????scheduler.pauseTrigger(new?TriggerKey(triggerName,?group));//?停止触发器??
????????}?catch?(SchedulerException?e)?{??
????????????throw?new?RuntimeException(e);??
????????}??
????}??
?? ?
????@Override??
????public?void?resumeTrigger(String?triggerName)?{??
????????resumeTrigger(triggerName,?NULLSTRING);??
????}??
?? ?
????@Override??
????public?void?resumeTrigger(String?triggerName,?String?group)?{??
????????try?{??
????????????scheduler.resumeTrigger(new?TriggerKey(triggerName,?group));//?重启触发器??
????????}?catch?(SchedulerException?e)?{??
????????????throw?new?RuntimeException(e);??
????????}??
????}??
?? ?
????@Override??
????public?boolean?removeTrigdger(String?triggerName)?{??
????????return?removeTrigdger(triggerName,?NULLSTRING);??
????}??
?? ?
????@Override??
????public?boolean?removeTrigdger(String?triggerName,?String?group)?{??
????????TriggerKey?triggerKey?=?new?TriggerKey(triggerName,?group);??
????????try?{??
????????????scheduler.pauseTrigger(triggerKey);//?停止触发器??
????????????return?scheduler.unscheduleJob(triggerKey);//?移除触发器??
????????}?catch?(SchedulerException?e)?{??
????????????throw?new?RuntimeException(e);??
????????}??
????}??
?? ?
????private?boolean?isValidExpression(final?CronExpression?cronExpression)?{??
?? ?
????????CronTriggerImpl?trigger?=?new?CronTriggerImpl();??
????????trigger.setCronExpression(cronExpression);??
?? ?
????????Date?date?=?trigger.computeFirstFireTime(null);??
?? ?
????????return?date?!=?null?&&?date.after(new?Date());??
????}??
?? ?
????private?boolean?isValidExpression(final?Date?startTime)?{??
?? ?
????????SimpleTriggerImpl?trigger?=?new?SimpleTriggerImpl();??
????????trigger.setStartTime(startTime);??
?? ?
????????Date?date?=?trigger.computeFirstFireTime(null);??
?? ?
????????return?date?!=?null?&&?date.after(new?Date());??
????}??
}??

? ?

SchedulerService 只有一个多态方法schedule，SchedulerServiceImpl实现SchedulerService接口，注入org.quartz.Schedulert和org.quartz.JobDetail，schedule方法可以动态配置org.quartz.CronExpression或org.quartz.SimpleTrigger调度时间。

五、实现自己的org.quartz.JobDetail

? ?

Java代码??

package?com.sundoctor.example.service;??
?? ?
import?org.quartz.JobExecutionContext;??
import?org.quartz.JobExecutionException;??
import?org.quartz.SchedulerException;??
import?org.quartz.Trigger;??
import?org.slf4j.Logger;??
import?org.slf4j.LoggerFactory;??
import?org.springframework.context.ApplicationContext;??
import?org.springframework.scheduling.quartz.QuartzJobBean;??
?? ?
public?class?MyQuartzJobBean?extends?QuartzJobBean?{??
?? ?
????private?static?final?Logger?logger?=?LoggerFactory.getLogger(MyQuartzJobBean.class);??
?? ?
????@Override??
????protected?void?executeInternal(JobExecutionContext?jobexecutioncontext)?throws?JobExecutionException?{??
????????Trigger?trigger?=?jobexecutioncontext.getTrigger();??
????????String?triggerName?=?trigger.getKey().getName();??
?? ?
????????SimpleService?simpleService?=?getApplicationContext(jobexecutioncontext).getBean("simpleService",??
????????????????SimpleService.class);??
????????simpleService.testMethod(triggerName);??
?? ?
????}??
?? ?
????private?ApplicationContext?getApplicationContext(final?JobExecutionContext?jobexecutioncontext)?{??
????????try?{??
????????????return?(ApplicationContext)?jobexecutioncontext.getScheduler().getContext().get("applicationContextKey");??
????????}?catch?(SchedulerException?e)?{??
????????????logger.error("jobexecutioncontext.getScheduler().getContext()?error!",?e);??
????????????throw?new?RuntimeException(e);??
????????}??
????}??
?? ?
}??

?

MyQuartzJobBean继承org.springframework.scheduling.quartz.QuartzJobBean，SimpleService如下：

Java代码??

package?com.sundoctor.example.service;??
?? ?
import?org.slf4j.Logger;??
import?org.slf4j.LoggerFactory;??
import?org.springframework.stereotype.Service;??
?? ?
@Service("simpleService")??
public?class?SimpleService?{??
?? ?
????private?static?final?Logger?logger?=?LoggerFactory.getLogger(SimpleService.class);??
?? ?
????public?void?testMethod(String?triggerName)?{??
????????//?这里执行定时调度业务??
????????logger.info(triggerName);??
????}??
?? ?
}??

SimpleService主要执行定时调度业务，在这里我只是简单打印一下log日志。
配置applicationContext-quartz.xml文件：

Xml代码??

<?xml?version="1.0"?encoding="UTF-8"?>??
<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.xsd">??
?? ?
????<bean?name="quartzScheduler"??
????????class="org.springframework.scheduling.quartz.SchedulerFactoryBean">??
????????<property?name="dataSource">??
????????????<ref?bean="dataSource"?/>??
????????</property>??
????????<property?name="applicationContextSchedulerContextKey"?value="applicationContextKey"?/>??
????????<property?name="configLocation"?value="classpath:quartz.properties"?/>??
????</bean>??
?? ?
????<bean?id="jobDetail"?class="org.springframework.scheduling.quartz.JobDetailFactoryBean">??
????????<property?name="jobClass">??
????????????<value>com.sundoctor.example.service.MyQuartzJobBean</value>??
????????</property>?????
????????<property?name="durability"?value="true"?/>?????
????</bean>??
?? ?
</beans>??

?
dataSource：项目中用到的数据源，里面包含了quartz用到的数据库表；
applicationContextSchedulerContextKey：是org.springframework.scheduling.quartz.SchedulerFactoryBean这个类中把spring上下文以key/value的方式存放在了quartz的SchedulerContext，可以用applicationContextSchedulerContextKey所定义的key得到spring的ApplicationContext，然后就可使用ApplicationContext取得spring beans，使用方法参见MyQuartzJobBean；
configLocation：用于指明quartz的配置文件的位置，如果不用spring配置quartz的话，本身quartz是通过一个配置文件进行配置的，默认名称是quartz.properties，里面配置的参数在quartz的doc文档中都有介绍，可以调整quartz，我在项目中也用这个文件部分的配置了一些属性，代码如下：

Xml代码??

org.quartz.scheduler.instanceName?=?DefaultQuartzScheduler??
org.quartz.scheduler.rmi.export?=?false??
org.quartz.scheduler.rmi.proxy?=?false??
org.quartz.scheduler.wrapJobExecutionInUserTransaction?=?false??
?? ?
orgorg.quartz.threadPool.class?=?org.quartz.simpl.SimpleThreadPool??
org.quartz.threadPool.threadCount?=?10??
org.quartz.threadPool.threadPriority?=?5??
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread?=?true??
?? ?
org.quartz.jobStore.misfireThreshold?=?60000??
?? ?
#orgorg.quartz.jobStore.class?=?org.quartz.simpl.RAMJobStore??
?? ?
orgorg.quartz.jobStore.class?=?org.quartz.impl.jdbcjobstore.JobStoreTX??
#orgorg.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.HSQLDBDelegate??
orgorg.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegate??
#org.quartz.jobStore.useProperties?=?true??
org.quartz.jobStore.tablePrefix?=?QRTZ_???
org.quartz.jobStore.isClustered?=?false???
org.quartz.jobStore.maxMisfiresToHandleAtATime=1???

? ?

这里面没有数据源相关的配置部分，采用spring注入datasource的方式已经进行了配置。

六、测试
运行如下测试类

Java代码??

package?com.sundoctor.example.test;??
?? ?
import?java.text.ParseException;??
import?java.text.SimpleDateFormat;??
import?java.util.Date;??
?? ?
import?org.quartz.SchedulerException;??
import?org.springframework.context.ApplicationContext;??
import?org.springframework.context.support.ClassPathXmlApplicationContext;??
?? ?
import?com.sundoctor.quartz.service.SchedulerService;??
?? ?
public?class?MainTest?{??
?? ?
????/**?
?????*?@param?args?
?????*?@throws?SchedulerException?
?????*/??
????public?static?void?main(String[]?args)?throws?SchedulerException?{??
?? ?
????????ApplicationContext?springContext?=?new?ClassPathXmlApplicationContext(new?String[]?{??
????????????????"classpath:applicationContext.xml",?"classpath:applicationContext-quartz.xml"?});??
????????SchedulerService?schedulerService?=?springContext.getBean("schedulerService",?SchedulerService.class);??
?? ?
????????//?执行业务逻辑...??
?? ?
????????//?设置高度任务??
????????//?每10秒中执行调试一次??
????????schedulerService.schedule("0/10?*?*???*?*?*");??
?? ?
????????Date?startTime?=?parse("2014-08-19?16:33:00");??
????????Date?endTime?=?parse("2014-08-22?21:10:00");??
?? ?
????????//?2014-08-19?16:33:00开始执行调度??
????????schedulerService.schedule(startTime);??
?? ?
????????//?2014-08-19?16:33:00开始执行调度，2014-08-22?21:10:00结束执行调试??
????????schedulerService.schedule(startTime,?endTime);??
?? ?
????????//?2014-08-19?16:33:00开始执行调度，执行5次结束??
????????schedulerService.schedule(startTime,?5);??
?? ?
????????//?2014-08-19?16:33:00开始执行调度，每隔20秒执行一次，执行5次结束??
????????schedulerService.schedule(startTime,?5,?20);??
?? ?
????????//?等等，查看com.sundoctor.quartz.service.SchedulerService??
?? ?
????}??
?? ?
????private?static?Date?parse(String?dateStr)?{??
????????SimpleDateFormat?format?=?new?SimpleDateFormat("yyyy-MM-dd?HH:mm:ss");??
????????try?{??
????????????return?format.parse(dateStr);??
????????}?catch?(ParseException?e)?{??
????????????throw?new?RuntimeException(e);??
????????}??
????}??
?? ?
}??

?
输出

Xml代码??

[2014-08-19?22:31:50]INFO??com.sundoctor.example.service.SimpleService(line:14)?-7e132a81-6d24-44e1-8d6c-15cdaeefb2ce??
[2014-08-19?22:32:00]INFO??com.sundoctor.example.service.SimpleService(line:14)?-7e132a81-6d24-44e1-8d6c-15cdaeefb2ce??
[2014-08-19?22:32:10]INFO??com.sundoctor.example.service.SimpleService(line:14)?-7e132a81-6d24-44e1-8d6c-15cdaeefb2ce??
[2014-08-19?22:32:20]INFO??com.sundoctor.example.service.SimpleService(line:14)?-7e132a81-6d24-44e1-8d6c-15cdaeefb2ce??
[2014-08-19?22:32:30]INFO??com.sundoctor.example.service.SimpleService(line:14)?-7e132a81-6d24-44e1-8d6c-15cdaeefb2ce??
[2014-08-19?22:32:40]INFO??com.sundoctor.example.service.SimpleService(line:14)?-7e132a81-6d24-44e1-8d6c-15cdaeefb2ce??

?
这样只是简单的将quartz trigger名称打印出来。

这样通过SchedulerService就可以动态配置调度时间。其实SchedulerService 还可扩展，比如可以注入多个JobDetail，调度不同的JobDetail。

Quartz动态配置表达的方法

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原文地址：http://www.cnblogs.com/weisen/p/4898561.html

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