CronTrigger的未触发指令学习
CronTrigger的未触发指令MISFIRE_INSTRUCTION_FIRE_ONCE_NOW与默认的MISFIRE_INSTRUCTION_SMART_POLICY指令功能一致，另外还有一种指令.MISFIRE_INSTRUCTION_DO_NOTHING，实例区别如下：
MyQuartzJobBean.java:
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package quartz.example.example5.test1;
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import java.util.Date;
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import org.quartz.JobDataMap;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.Trigger;
import org.springframework.scheduling.quartz.QuartzJobBean;
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public class MyQuartzJobBean extends QuartzJobBean {
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@SuppressWarnings("unused")
@Override
protected void executeInternal(JobExecutionContext jobexecutioncontext) throws JobExecutionException {
Trigger trigger = jobexecutioncontext.getTrigger();
JobDataMap ?map=jobexecutioncontext.getJobDetail().getJobDataMap();
String triggerName = trigger.getName();
String group = trigger.getGroup();
Date lastalivetime=new Date();
System.out.println("testMethod1.......1"+lastalivetime);
}
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}
MisFireTest.java:
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package quartz.example.example5.test1;
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import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
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public class MisFireTest {
public ApplicationContext app;
public Scheduler sched;
public JobDetail job;
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public void run() throws Exception {
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System.out.println("------- Initializing -------------------");
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System.out.println("------- Initialization Complete -----------");
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System.out.println("------- Scheduling Jobs -----------");
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CronTrigger trigger = new CronTrigger("trigger11", "group", job.getName(),
Scheduler.DEFAULT_GROUP);
trigger.setCronExpression("0/5 * * ? * * *");
trigger.setMisfireInstruction(CronTrigger.MISFIRE_INSTRUCTION_DO_NOTHING);
//trigger.setMisfireInstruction(CronTrigger.MISFIRE_INSTRUCTION_FIRE_ONCE_NOW);
sched.scheduleJob(job, trigger);
System.out.println("------- Starting Scheduler ----------------");
sched.start();
System.out.println("------- Started Scheduler -----------------");
try {
Thread.sleep(10L * 1000L);
} catch (Exception e) {
}
System.out.println("------- Shutting Down ---------------------");
sched.pauseTrigger("trigger11", "group");
try {
Thread.sleep(10L * 1000L);//暂停10秒
} catch (Exception e) {
}
sched.resumeTrigger("trigger11", "group");
System.out.println("------- Shutdown Complete -----------------");
try {
Thread.sleep(10L * 1000L);
} catch (Exception e) {
}
sched.shutdown(true);
}
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public static void main(String[] args) ?throws Exception {
MisFireTest example = new MisFireTest();
example.app = new ClassPathXmlApplicationContext(new String[] {
"classpath:applicationContext.xml",
"classpath:applicationContext-quartz.xml" });
example.sched = (Scheduler) example.app.getBean("quartzScheduler");
example.job = (JobDetail) example.app.getBean("jobDetail");
example.run();
}
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}
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applicationContext-quartz.xml:<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd"><beans>? ? <bean name="quartzScheduler" value="applicationContextKey"/>? ? ? ? <property name="configLocation" value="classpath:quartz.properties"/>? ? </bean>? ??? ? ?<bean id="jobDetail" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"? ? xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"? ? xmlns:aop="http://www.springframework.org/schema/aop"? ? xmlns:tx="http://www.springframework.org/schema/tx"? ? xmlns:context="http://www.springframework.org/schema/context"? ? ?xmlns:jee="http://www.springframework.org/schema/jee"? ? xsi:schemaLocation="? ? http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd? ? http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd? ? http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd? ? http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd? ? ?http://www.springframework.org/schema/jee? ? ? ?http://www.springframework.org/schema/jee/spring-jee-2.5.xsd" ?>??? ?<context:component-scan base-package="com.sundoctor"/><!-- 属性文件读入 --><bean id="propertyConfigurer" destroy-method="close"><property name="driverClass" value="${jdbc.driverClassName}" /><property name="jdbcUrl" value="${jdbc.url}" /><property name="user" value="${jdbc.username}" /><property name="password" value="${jdbc.password}" /><property name="initialPoolSize" value="5" /><property name="minPoolSize" value="5" /><property name="maxPoolSize" value="20" /><property name="acquireIncrement" value="2" /><property name="maxIdleTime" value="3600" /><property name="idleConnectionTestPeriod" ?value="180"/> ?<property name="automaticTestTable" value="C3P0TESTTABLE"/>?</bean>
</beans>
jdbc.properties:jdbc.driverClassName=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=UTF-8&autoReconnect=truejdbc.username=rootjdbc.password=
quartz.properties:#============================================================== ?#Configure Main Scheduler Properties ?#============================================================== ??org.quartz.scheduler.instanceName = TestScheduler1 ??org.quartz.scheduler.instanceId = AUTO ?
#============================================================== ?#Configure ThreadPool ?#==============================================================?org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPoolorg.quartz.threadPool.threadCount = 10org.quartz.threadPool.threadPriority = 5org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true
#============================================================== ?#Configure JobStore ?#==============================================================#注意改参数如果大于10秒则策略失效，重新启动时会补上暂停时段的job?org.quartz.jobStore.misfireThreshold = 5000org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTXorg.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegateorg.quartz.jobStore.tablePrefix = QRTZ_org.quartz.jobStore.maxMisfiresToHandleAtATime=10org.quartz.jobStore.isClustered = true ?org.quartz.jobStore.clusterCheckinInterval = 20000 ?
执行MisFireTest类，结果如下：------- Initializing -------------------------- Initialization Complete ------------------ Scheduling Jobs ------------------ Starting Scheduler ----------------------- Started Scheduler -----------------testMethod1.......1Tue Sep 27 18:44:15 CST 2011testMethod1.......1Tue Sep 27 18:44:20 CST 2011------- Shutting Down ---------------------------- Shutdown Complete -----------------testMethod1.......1Tue Sep 27 18:44:35 CST 2011testMethod1.......1Tue Sep 27 18:44:40 CST 2011
如果改成MISFIRE_INSTRUCTION_FIRE_ONCE_NOW策略，结果如下：------- Initializing -------------------------- Initialization Complete ------------------ Scheduling Jobs ------------------ Starting Scheduler ----------------------- Started Scheduler -----------------testMethod1.......1Tue Sep 27 18:46:55 CST 2011testMethod1.......1Tue Sep 27 18:47:00 CST 2011------- Shutting Down ---------------------------- Shutdown Complete -----------------testMethod1.......1Tue Sep 27 18:47:14 CST 2011testMethod1.......1Tue Sep 27 18:47:15 CST 2011testMethod1.......1Tue Sep 27 18:47:20 CST 2011
如果org.quartz.jobStore.misfireThreshold = 20000,这无论使用那种策略结果均如下：------- Initializing -------------------------- Initialization Complete ------------------ Scheduling Jobs ------------------ Starting Scheduler ----------------------- Started Scheduler -----------------testMethod1.......1Tue Sep 27 18:50:00 CST 2011testMethod1.......1Tue Sep 27 18:50:05 CST 2011testMethod1.......1Tue Sep 27 18:50:10 CST 2011------- Shutting Down ---------------------------- Shutdown Complete -----------------testMethod1.......1Tue Sep 27 18:50:20 CST 2011 ?//补上服务暂停时的任务testMethod1.......1Tue Sep 27 18:50:20 CST 2011testMethod1.......1Tue Sep 27 18:50:25 CST 2011testMethod1.......1Tue Sep 27 18:50:30 CST 2011