Quartz在Spring中如何动态配置时间.doc

Quartz在Spring中如何动态配置时间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配置文件引用 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docsdbTables目录，里面有各种数据库建表脚本，我采用的Quartz 1.6.5版本，总共12张表，不同版本，表个数可能不同。我用mysql数据库，执行了Quartz发行包的docsdbTablestables_mysql_innodb.sql建表。二、建立java project，完成后目录如下project，完成后目录如下三、配置数据库连接池配置perties文件引用jdbc.driverClassName=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql:/localhost:3306/quartz?useUnicode=true&characterEncoding=UTF-8&autoReconnect=truejdbc.username=rootjdbc.password=kfscpool.checkoutTimeout=5000cpool.minPoolSize=10cpool.maxPoolSize=25cpool.maxIdleTime=7200cpool.acquireIncrement=5cpool.autoCommitOnClose=true配置applicationContext.xml文件引用 classpath:perties 这里只是配置了数据连接池，我使用c3p0 连接池，还没有涉及到Quartx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，发现引用 0/10 * * * * ? 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.CronTriggerBean，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packagecom.sundoctor.quartz.service; importjava.util.Date; importorg.quartz.CronExpression; publicinterfaceSchedulerService voidschedule(StringcronExpression); voidschedule(Stringname,StringcronExpression); voidschedule(CronExpressioncronExpression); voidschedule(Stringname,CronExpressioncronExpression); voidschedule(DatestartTime); voidschedule(Stringname,DatestartTime); voidschedule(DatestartTime,DateendTime); voidschedule(Stringname,DatestartTime,DateendTime); voidschedule(DatestartTime,DateendTime,intrepeatCount); voidschedule(Stringname,DatestartTime,DateendTime,intrepeatCount); voidschedule(DatestartTime,DateendTime,intrepeatCount,longrepeatInterval); voidschedule(Stringname,DatestartTime,DateendTime,intrepeatCount,longrepeatInterval); package com.sundoctor.quartz.service; import java.util.Date; import org.quartz.CronExpression; public interface SchedulerService void schedule(String cronExpression); void schedule(String name,String cronExpression); void schedule(CronExpression cronExpression); void schedule(String name,CronExpression cronExpression); void schedule(Date startTime); void schedule(String name,Date startTime); void schedule(Date startTime,Date endTime); void schedule(String name,Date startTime,Date endTime); void schedule(Date startTime,Date endTime,int repeatCount); void schedule(String name,Date startTime,Date endTime,int repeatCount); void schedule(Date startTime,Date endTime,int repeatCount,long repeatInterval) ; void schedule(String name,Date startTime,Date endTime,int repeatCount,long repeatInterval); 动态调度服务实现类：Java代码packagecom.sundoctor.quartz.service; importjava.text.ParseException; importjava.util.Date; importjava.util.UUID; importorg.quartz.CronExpression; importorg.quartz.CronTrigger; importorg.quartz.JobDetail; importorg.quartz.Scheduler; importorg.quartz.SchedulerException; importorg.quartz.SimpleTrigger; importorg.springframework.beans.factory.annotation.Autowired; importorg.springframework.beans.factory.annotation.Qualifier; importorg.springframework.stereotype.Service; Service(schedulerService) publicclassSchedulerServiceImplimplementsSchedulerService privateSchedulerscheduler; privateJobDetailjobDetail; Autowired publicvoidsetJobDetail(Qualifier(jobDetail)JobDetailjobDetail) this.jobDetail=jobDetail; Autowired publicvoidsetScheduler(Qualifier(quartzScheduler)Schedulerscheduler) this.scheduler=scheduler; Override publicvoidschedule(StringcronExpression) schedule(null,cronExpression); Override publicvoidschedule(Stringname,StringcronExpression) try schedule(name,newCronexpression_r(cronExpression); catch(ParseExceptione) thrownewRuntimeException(e); Override publicvoidschedule(CronExpressioncronExpression) schedule(null,cronExpression); Override publicvoidschedule(Stringname,CronExpressioncronExpression) if(name=null|name.trim().equals() name=UUID.randomUUID().toString(); try scheduler.addJob(jobDetail,true); CronTriggercronTrigger=newCronTrigger(name,Scheduler.DEFAULT_GROUP,jobDetail.getName(), Scheduler.DEFAULT_GROUP); cronTrigger.setCronexpression_r(cronExpression); scheduler.scheduleJob(cronTrigger); scheduler.rescheduleJob(name,Scheduler.DEFAULT_GROUP,cronTrigger); catch(SchedulerExceptione) thrownewRuntimeException(e); Override publicvoidschedule(DatestartTime) schedule(startTime,null); Override publicvoidschedule(Stringname,DatestartTime) schedule(name,startTime,null); Override publicvoidschedule(DatestartTime,DateendTime) schedule(startTime,endTime,0); Override publicvoidschedule(Stringname,DatestartTime,DateendTime) schedule(name,startTime,endTime,0); Override publicvoidschedule(DatestartTime,DateendTime,intrepeatCount) schedule(null,startTime,endTime,0); Override publicvoidschedule(Stringname,DatestartTime,DateendTime,intrepeatCount) schedule(name,startTime,endTime,0,0L); Override publicvoidschedule(DatestartTime,DateendTime,intrepeatCount,longrepeatInterval) schedule(null,startTime,endTime,repeatCount,repeatInterval); Override publicvoidschedule(Stringname,DatestartTime,DateendTime,intrepeatCount,longrepeatInterval) if(name=null|name.trim().equals() name=UUID.randomUUID().toString(); try scheduler.addJob(jobDetail,true); SimpleTriggerSimpleTrigger=newSimpleTrigger(name,Scheduler.DEFAULT_GROUP,jobDetail.getName(), Scheduler.DEFAULT_GROUP,startTime,endTime,repeatCount,repeatInterval); scheduler.scheduleJob(SimpleTrigger); scheduler.rescheduleJob(name,Scheduler.DEFAULT_GROUP,SimpleTrigger); catch(SchedulerExceptione) thrownewRuntimeException(e); package com.sundoctor.quartz.service; import java.text.ParseException; import java.util.Date; import java.util.UUID; import org.quartz.CronExpression; import org.quartz.CronTrigger; import org.quartz.JobDetail; import org.quartz.Scheduler; import org.quartz.SchedulerException; import org.quartz.SimpleTrigger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Service; Service(schedulerService) public class SchedulerServiceImpl implements SchedulerService private Scheduler scheduler; private JobDetail jobDetail; Autowired public void setJobDetail(Qualifier(jobDetail) JobDetail jobDetail) this.jobDetail = jobDetail; Autowired public void setScheduler(Qualifier(quartzScheduler) Scheduler scheduler) this.scheduler = scheduler; Override public void schedule(String cronExpression) schedule(null, cronExpression); Override public void schedule(String name, String cronExpression) try schedule(name, new Cronexpression_r(cronExpression); catch (ParseException e) throw new RuntimeException(e); Override public void schedule(CronExpression cronExpression) schedule(null, cronExpression); Override public void schedule(String name, CronExpression cronExpression) if (name = null | name.trim().equals() name = UUID.randomUUID().toString(); try scheduler.addJob(jobDetail, true); CronTrigger cronTrigger = new CronTrigger(name, Scheduler.DEFAULT_GROUP, jobDetail.getName(), Scheduler.DEFAULT_GROUP); cronTrigger.setCronexpression_r(cronExpression); scheduler.scheduleJob(cronTrigger); scheduler.rescheduleJob(name, Scheduler.DEFAULT_GROUP, cronTrigger); catch (SchedulerException e) throw new RuntimeException(e); Override public void schedule(Date startTime) schedule(startTime, null); Override public void schedule(String name, Date startTime) schedule(name, startTime, null); Override public void schedule(Date startTime, Date endTime) schedule(startTime, endTime, 0); Override public void schedule(String name, Date startTime, Date endTime) schedule(name, startTime, endTime, 0); Override public void schedule(Date startTime, Date endTime, int repeatCount) schedule(null, startTime, endTime, 0); Override public void schedule(String name, Date startTime, Date endTime, int repeatCount) schedule(name, startTime, endTime, 0, 0L); Override public void schedule(Date startTime, Date endTime, int repeatCount, long repeatInterval) schedule(null, startTime, endTime, repeatCount, repeatInterval); Override public void schedule(String name, Date startTime, Date endTime, int repeatCount, long repeatInterval) if (name = null | name.trim().equals() name = UUID.randomUUID().toString(); try scheduler.addJob(jobDetail, true); SimpleTrigger SimpleTrigger = new SimpleTrigger(name, Scheduler.DEFAULT_GROUP, jobDetail.getName(), Scheduler.DEFAULT_GROUP, startTime, endTime, repeatCount, repeatInterval); scheduler.scheduleJob(SimpleTrigger); scheduler.rescheduleJob(name, Scheduler.DEFAULT_GROUP, SimpleTrigger); catch (SchedulerException e) throw new RuntimeException(e); 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在上一步中SchedulerServiceImpl需要注入org.quartz.JobDetail，在以前的静态配置中引用中使用org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean。在这里使用org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean。会报引用Caused by: java.io.NotSerializableException: Unable to serialize JobDataMap for insertion into database because the value of property methodInvoker is not serializable: org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBeanat org.quartz.impl.jdbcjobstore.StdJDBCDelegate.serializeJobData(StdJDBCDelegate.java:3358)at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.insertJobDetail(StdJDBCDelegate.java:515)at org.quartz.impl.jdbcjobstore.JobStoreSupport.storeJob(JobStoreSupport.java:1102). 11 more异常，google了一下，没有找到解决方法。所以在这里不能使用org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean。，不能pojo了，需要使用org.springframework.scheduling.quartz.JobDetailBean和org.springframework.scheduling.quartz.QuartzJobBean实现自己的QuartzJobBean，如下：Java代码packagecom.sundoctor.example.service; importorg.quartz.JobExecutionContext; importorg.quartz.JobExecutionException; importorg.quartz.Trigger; importorg.springframework.scheduling.quartz.QuartzJobBean; publicclassMyQuartzJobBeanextendsQuartzJobBean privateSimpleServicesimpleService; publicvoidsetSimpleService(SimpleServicesimpleService) this.simpleService=simpleService; Override protectedvoidexecuteInternal(JobExecutionContextjobexecutioncontext)throwsJobExecutionException Triggertrigger=jobexecutioncontext.getTrigger(); StringtriggerName=trigger.getName(); simpleService.testMethod(triggerName); package com.sundoctor.example.service; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; import org.quartz.Trigger; import org.springframework.scheduling.quartz.QuartzJobBean; public class MyQuartzJobBean extends QuartzJobBean private SimpleService simpleService; public void setSimpleService(SimpleService simpleService) this.simpleService = simpleService; Override protected void executeInternal(JobExecutionContext jobexecutioncontext) throws JobExecutionException Trigger trigger = jobexecutioncontext.getTrigger(); String triggerName = trigger.getName(); simpleService.testMethod(triggerName); MyQuartzJobBean继承org.springframework.scheduling.quartz.QuartzJobBean，注入的SimpleService如下：Java代码packagecom.sundoctor.example.service; importjava.io.Serializable; importorg.slf4j.Logger; importorg.slf4j.LoggerFactory; importorg.springframework.stereotype.Service; Service(simpleService) publicclassSimpleServiceimplementsSerializable privatestaticfinallongserialVersionUID=122323233244334343L; privatestaticfinalLoggerlogger=LoggerFactory.getLogger(Si