spring框架使用任务调度quartz的例子-TriggerListener 篇
有时候我们的任务(Job)需要再某些任务完成之后才能进行;例如从旧的数据库批量导数据的时候;需要现将被其他数据依赖的数据导入新的数据库;然后再进行关系的导入.。在这种情况下我们就可以使用Quartz的listener来做文章了。首先我们写一个主任务的类,命名为MainJob;她的作用是作为一系列任务的开始点。
MainJob.java
package
jobs;
import org.apache.log4j.Logger;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class MainJob extends QuartzJobBean {
private Logger logger = Logger.getLogger(getClass());
@Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
// TODO Auto-generated method stub
logger.debug("Just say hi.");
}
}
import org.apache.log4j.Logger;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class MainJob extends QuartzJobBean {
private Logger logger = Logger.getLogger(getClass());
@Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
// TODO Auto-generated method stub
logger.debug("Just say hi.");
}
}
然后我们新建另外一个任务(SecondJob)作为后续任务:
SecondJob.java
package
jobs;
import org.apache.log4j.Logger;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class SecondJob extends QuartzJobBean {
private Logger logger = Logger.getLogger(getClass());
@Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
// TODO Auto-generated method stub
logger.debug("I'm the second job.");
}
}
创建一个TriggerListener,重写其triggerComplete方法,并且添加一些方便spring注入的属性和方法。
import org.apache.log4j.Logger;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class SecondJob extends QuartzJobBean {
private Logger logger = Logger.getLogger(getClass());
@Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
// TODO Auto-generated method stub
logger.debug("I'm the second job.");
}
}
NextJobTriggerListener.java
package
listeners;
import org.apache.log4j.Logger;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.Scheduler;
import org.quartz.Trigger;
import org.quartz.listeners.TriggerListenerSupport;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.scheduling.quartz.SimpleTriggerBean;
public class NextJobTriggerListener extends TriggerListenerSupport {
private Logger logger = Logger.getLogger(getClass());
private String name;
public String getName() {
return this.name;
}
public void setName(String name)
{
this.name=name;
}
private SimpleTriggerBean nextTrigger;
public void setNextTrigger(SimpleTriggerBean nextTrigger) {
this.nextTrigger = nextTrigger;
}
@Override
public void triggerComplete(Trigger trigger, JobExecutionContext context, int code) {
try{
Scheduler schduler=context.getScheduler();
JobDetail nextJob=nextTrigger.getJobDetail();
//查找名称和即将加入的任务一样的任务
JobDetail oldJob=schduler.getJobDetail(nextJob.getName(),nextJob.getGroup());
//查找名称和即将加入的触发器一样的触发器
Trigger oldTrigger=schduler.getTrigger( nextTrigger.getName(),nextTrigger.getGroup());
if(oldJob==null&&oldTrigger==null)//同名的任务和触发器都不存在
{
logger.debug("inside scheduleJob."+code);
schduler.scheduleJob(nextJob,nextTrigger);
}else//同名的任务或触发器
{
logger.debug("oldJob==null:"+(oldJob==null));
logger.debug("oldTrigger==null:"+(oldTrigger==null));
}
super.triggerComplete(trigger, context, code);
}catch(Exception e)
{
e.printStackTrace();
}
}
}
import org.apache.log4j.Logger;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.Scheduler;
import org.quartz.Trigger;
import org.quartz.listeners.TriggerListenerSupport;
import org.springframework.scheduling.quartz.QuartzJobBean;
import org.springframework.scheduling.quartz.SimpleTriggerBean;
public class NextJobTriggerListener extends TriggerListenerSupport {
private Logger logger = Logger.getLogger(getClass());
private String name;
public String getName() {
return this.name;
}
public void setName(String name)
{
this.name=name;
}
private SimpleTriggerBean nextTrigger;
public void setNextTrigger(SimpleTriggerBean nextTrigger) {
this.nextTrigger = nextTrigger;
}
@Override
public void triggerComplete(Trigger trigger, JobExecutionContext context, int code) {
try{
Scheduler schduler=context.getScheduler();
JobDetail nextJob=nextTrigger.getJobDetail();
//查找名称和即将加入的任务一样的任务
JobDetail oldJob=schduler.getJobDetail(nextJob.getName(),nextJob.getGroup());
//查找名称和即将加入的触发器一样的触发器
Trigger oldTrigger=schduler.getTrigger( nextTrigger.getName(),nextTrigger.getGroup());
if(oldJob==null&&oldTrigger==null)//同名的任务和触发器都不存在
{
logger.debug("inside scheduleJob."+code);
schduler.scheduleJob(nextJob,nextTrigger);
}else//同名的任务或触发器
{
logger.debug("oldJob==null:"+(oldJob==null));
logger.debug("oldTrigger==null:"+(oldTrigger==null));
}
super.triggerComplete(trigger, context, code);
}catch(Exception e)
{
e.printStackTrace();
}
}
}
配置spring 的applicationContext.xml
applicationContext.xml
<?
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:jee ="http://www.springframework.org/schema/jee"
xsi:schemaLocation ="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd" >
<!-- 主任务 -->
< bean id ="mainJob"
class ="org.springframework.scheduling.quartz.JobDetailBean" >
<!-- 运行的类 -->
< property name ="jobClass" >
< value > jobs.MainJob </ value >
</ property >
</ bean >
<!-- 主任务的监听器 -->
< bean id ="mainTriggerListener"
class ="listeners.NextJobTriggerListener" >
<!-- 下个触发器 -->
< property name ="nextTrigger" ref ="secondTrigger" ></ property >
<!-- 监听器名称 -->
< property name ="name" value ="mainTriggerListener" ></ property >
</ bean >
<!-- 主任务的触发器 -->
< bean id ="mainTrigger"
class ="org.springframework.scheduling.quartz.SimpleTriggerBean" >
< property name ="jobDetail" >
<!-- 上面创建的任务调度对象 -->
< ref bean ="mainJob" />
</ property >
<!-- 启动60秒后执行任务调度的excute方法 -->
< property name ="startDelay" >
< value > 6000 </ value >
</ property >
<!-- 运行次数 -->
< property name ="repeatCount" >
< value > 0 </ value >
</ property >
<!-- 隔一个小时运行一次(貌似多余,不写会报错) -->
< property name ="repeatInterval" >
< value > 3600000 </ value >
</ property >
< property name ="triggerListenerNames" >
< list >
< value > mainTriggerListener </ value >
</ list >
</ property >
</ bean >
<!-- 后续任务 -->
< bean id ="secondJob"
class ="org.springframework.scheduling.quartz.JobDetailBean" >
<!-- 运行的类 -->
< property name ="jobClass" >
< value > jobs.SecondJob </ value >
</ property >
</ bean >
<!-- 后续任务的触发器 -->
< bean id ="secondTrigger"
class ="org.springframework.scheduling.quartz.SimpleTriggerBean" >
< property name ="jobDetail" >
<!-- 上面创建的任务调度对象 -->
< ref bean ="secondJob" />
</ property >
<!-- 启动6秒后执行任务调度的excute方法 -->
< property name ="startDelay" >
< value > 6000 </ value >
</ property >
<!-- 运行次数 -->
< property name ="repeatCount" >
< value > 0 </ value >
</ property >
<!-- 隔一个小时运行一次(貌似多余,不写会报错) -->
< property name ="repeatInterval" >
<!--
<value>3600000</value>
-->
< value > 6000 </ value >
</ property >
</ bean >
<!-- 任务调度工厂类 -->
< bean
class ="org.springframework.scheduling.quartz.SchedulerFactoryBean" >
<!-- 这一部分的配置不用管 -->
< property name ="quartzProperties" >
< props >
< prop key ="org.quartz.threadPool.class" >
org.quartz.simpl.SimpleThreadPool
</ prop >
< prop key ="org.quartz.threadPool.threadCount" > 10 </ prop >
< prop key ="org.quartz.threadPool.threadPriority" >
5
</ prop >
< prop
key ="org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread" >
true
</ prop >
</ props >
</ property >
<!-- 触发器,可以放一大堆触发器 -->
< property name ="triggers" >
< list >
<!-- 在这里加 -->
< ref bean ="mainTrigger" />
</ list >
</ property >
< property name ="triggerListeners" >
< list >
<!-- 触发器的监听器 -->
< ref bean ="mainTriggerListener" />
</ list >
</ property >
</ bean >
</ beans >
开启服务器,输出
< beans xmlns ="http://www.springframework.org/schema/beans"
xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jee ="http://www.springframework.org/schema/jee"
xsi:schemaLocation ="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd" >
<!-- 主任务 -->
< bean id ="mainJob"
class ="org.springframework.scheduling.quartz.JobDetailBean" >
<!-- 运行的类 -->
< property name ="jobClass" >
< value > jobs.MainJob </ value >
</ property >
</ bean >
<!-- 主任务的监听器 -->
< bean id ="mainTriggerListener"
class ="listeners.NextJobTriggerListener" >
<!-- 下个触发器 -->
< property name ="nextTrigger" ref ="secondTrigger" ></ property >
<!-- 监听器名称 -->
< property name ="name" value ="mainTriggerListener" ></ property >
</ bean >
<!-- 主任务的触发器 -->
< bean id ="mainTrigger"
class ="org.springframework.scheduling.quartz.SimpleTriggerBean" >
< property name ="jobDetail" >
<!-- 上面创建的任务调度对象 -->
< ref bean ="mainJob" />
</ property >
<!-- 启动60秒后执行任务调度的excute方法 -->
< property name ="startDelay" >
< value > 6000 </ value >
</ property >
<!-- 运行次数 -->
< property name ="repeatCount" >
< value > 0 </ value >
</ property >
<!-- 隔一个小时运行一次(貌似多余,不写会报错) -->
< property name ="repeatInterval" >
< value > 3600000 </ value >
</ property >
< property name ="triggerListenerNames" >
< list >
< value > mainTriggerListener </ value >
</ list >
</ property >
</ bean >
<!-- 后续任务 -->
< bean id ="secondJob"
class ="org.springframework.scheduling.quartz.JobDetailBean" >
<!-- 运行的类 -->
< property name ="jobClass" >
< value > jobs.SecondJob </ value >
</ property >
</ bean >
<!-- 后续任务的触发器 -->
< bean id ="secondTrigger"
class ="org.springframework.scheduling.quartz.SimpleTriggerBean" >
< property name ="jobDetail" >
<!-- 上面创建的任务调度对象 -->
< ref bean ="secondJob" />
</ property >
<!-- 启动6秒后执行任务调度的excute方法 -->
< property name ="startDelay" >
< value > 6000 </ value >
</ property >
<!-- 运行次数 -->
< property name ="repeatCount" >
< value > 0 </ value >
</ property >
<!-- 隔一个小时运行一次(貌似多余,不写会报错) -->
< property name ="repeatInterval" >
<!--
<value>3600000</value>
-->
< value > 6000 </ value >
</ property >
</ bean >
<!-- 任务调度工厂类 -->
< bean
class ="org.springframework.scheduling.quartz.SchedulerFactoryBean" >
<!-- 这一部分的配置不用管 -->
< property name ="quartzProperties" >
< props >
< prop key ="org.quartz.threadPool.class" >
org.quartz.simpl.SimpleThreadPool
</ prop >
< prop key ="org.quartz.threadPool.threadCount" > 10 </ prop >
< prop key ="org.quartz.threadPool.threadPriority" >
5
</ prop >
< prop
key ="org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread" >
true
</ prop >
</ props >
</ property >
<!-- 触发器,可以放一大堆触发器 -->
< property name ="triggers" >
< list >
<!-- 在这里加 -->
< ref bean ="mainTrigger" />
</ list >
</ property >
< property name ="triggerListeners" >
< list >
<!-- 触发器的监听器 -->
< ref bean ="mainTriggerListener" />
</ list >
</ property >
</ bean >
</ beans >
DEBUG
[
MainJob.executeInternal(14)
]
Just say hi.
DEBUG [ NextJobTriggerListener.triggerComplete(38) ] inside scheduleJob .3
DEBUG [SecondJob.executeInternal(14)] I'm the second job.
DEBUG [ NextJobTriggerListener.triggerComplete(43) ] oldJob == null:false
DEBUG [ NextJobTriggerListener.triggerComplete(44) ] oldTrigger == null:false
DEBUG [ NextJobTriggerListener.triggerComplete(38) ] inside scheduleJob .3
DEBUG [SecondJob.executeInternal(14)] I'm the second job.
DEBUG [ NextJobTriggerListener.triggerComplete(43) ] oldJob == null:false
DEBUG [ NextJobTriggerListener.triggerComplete(44) ] oldTrigger == null:false
另外这里一个任务只绑定了一个简单的触发器,这样做是为了比较方便地可以检测到任务完成的情况;至于任务的具体内容就任由大家发挥了。写这篇文章希望能有人在其中获得启发。
Let life be beautiful like summer flowers and death like autumn leaves.
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