CronTrigger的未触发授命学习
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:
package quartz.example.example5.test1;
import java.util.Date;
import org.quartz.JobDataMap;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.Trigger;
import org.springframework.scheduling.quartz.QuartzJobBean;
public class MyQuartzJobBean extends QuartzJobBean {
@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);
}
}
MisFireTest.java:
package quartz.example.example5.test1;
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MisFireTest {
public ApplicationContext app;
public Scheduler sched;
public JobDetail job;
public void run() throws Exception {
System.out.println("------- Initializing -------------------");
System.out.println("------- Initialization Complete -----------");
System.out.println("------- Scheduling Jobs -----------");
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);
}
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();
}
}
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" 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.JobDetailBean">
<property name="jobClass">
<value>
quartz.example.example5.test1.MyQuartzJobBean
</value>
</property>
</bean>
</beans>
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: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" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:jdbc.properties</value> </list> </property> </bean> <!-- 数据源定义,使用c3p0 连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" 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.Driver jdbc.url=jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true jdbc.username=root jdbc.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.SimpleThreadPool org.quartz.threadPool.threadCount = 10 org.quartz.threadPool.threadPriority = 5 org.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 = 5000 org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX org.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegate org.quartz.jobStore.tablePrefix = QRTZ_ org.quartz.jobStore.maxMisfiresToHandleAtATime=10 org.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 2011 testMethod1.......1Tue Sep 27 18:44:20 CST 2011 ------- Shutting Down --------------------- ------- Shutdown Complete ----------------- testMethod1.......1Tue Sep 27 18:44:35 CST 2011 testMethod1.......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 2011 testMethod1.......1Tue Sep 27 18:47:00 CST 2011 ------- Shutting Down --------------------- ------- Shutdown Complete ----------------- testMethod1.......1Tue Sep 27 18:47:14 CST 2011 testMethod1.......1Tue Sep 27 18:47:15 CST 2011 testMethod1.......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 2011 testMethod1.......1Tue Sep 27 18:50:05 CST 2011 testMethod1.......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 2011 testMethod1.......1Tue Sep 27 18:50:25 CST 2011 testMethod1.......1Tue Sep 27 18:50:30 CST 2011