spring quartz2.2.1 cluster

quartz 持久化介绍

1 大家都清楚quartz最基本的概念就是job，在job内调用具体service完成具体功能，quartz需要把每个job存储起来，方便调度，quartz存储job方式就分三种，我们最常用的也是quartz默认的是RAMJobStore，RAMJobStore顾名思义就是把job的相关信息存储在内存里，如果用spring配置quartz的job信息的话，所有信息是配置在xml里，当spirng
context启动的时候就把xml里的job信息装入内存。这一性质就决定了一旦JVM挂掉或者容器挂掉，内存中的job信息就随之消失，无法持久化。另外两种方式是JobStoreTX和JobStoreCMT，暂时不讨论这两者的区别，使用这两种JobStore，quartz就会通过jdbc直连或者应用服务器jndi连接数据库，读取配置在数据库里的job初始化信息，并且把job通过java序列化到数据库里，这样就使得每个job信息得到了持久化，即使在jvm或者容器挂掉的情况下，也能通过数据库感知到其他job的状态和信息。 
 2 quartz集群各节点之间是通过同一个数据库实例(准确的说是同一个数据库实例的同一套表)来感知彼此的。 

quartz实现代码

1.新建quartz相关表
链接：http://download.csdn.net/detail/fmynjy/9705319
2.quartz.properties

#==============================================================
#Configure Main Scheduler Properties
#==============================================================
org.quartz.scheduler.instanceName = DefaultQuartzScheduler
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
#==============================================================
org.quartz.jobStore.misfireThreshold = 60000
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreCMT
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.maxMisfiresToHandleAtATime=10
org.quartz.jobStore.isClustered = true
org.quartz.jobStore.clusterCheckinInterval = 20000

3.spring-scheduler.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:task="http://www.springframework.org/schema/task"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"
default-lazy-init="true">
<description>使用Spring的 Scheduled的定时任务配置</description>

<!-- 注册调度任务 -->
<bean id="mapScheduler" lazy-init="false" autowire="no"
class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="triggers">
<list>
<ref bean="testTrigger"/>
</list>
</property>
<property name="applicationContextSchedulerContextKey" value="applicationContext" />
<property name="configLocation" value="classpath:quartz.properties" />
<!--可选，QuartzScheduler启动时更新己存在的Job，这样就不用每次修改targetObject后删除qrtz_job_details表对应记录了 -->
<property name="overwriteExistingJobs" value="true" />
<!--设置自动启动 -->
<property name="autoStartup" value="true" />
</bean>

<bean name="springCronJob" class="com.test.util.schedule.SpringCronJob"></bean>
<bean id="testSpringCronJob" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
<property name="jobClass">
<value>com.test.util.schedule.MyDetailQuartzJobBean</value>
</property>
<property name="jobDataAsMap">
<map>
<entry key="targetObject" value="springCronJob" />
<entry key="targetMethod" value="pmenuCount" />
</map>
</property>
<property name="durability" value="true" />
</bean>
<bean id="testTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
<property name="jobDetail">
<ref bean="testSpringCronJob" />
</property>
<property name="cronExpression">
<!-- 每次启动主线程的等待时间 时间顺序按 秒 分 时 日 月 周 年 当前为每30秒执行一次 -->
<value>*/30 * * * * ?</value>
</property>
</bean>

</beans>

4.MyDetailQuartzJobBean.java

package com.test.util.schedule;

import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.context.ApplicationContext;
import org.springframework.scheduling.quartz.QuartzJobBean;

/**
* Spring调度任务
* @author admin
*
*/
public class MyDetailQuartzJobBean extends QuartzJobBean {
/**
* 日志打印
*/
private static final Log log = LogFactory.getLog(MyDetailQuartzJobBean.class);
private String targetObject;
private String targetMethod;
private ApplicationContext applicationContext;
@Override
protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
try {
Object otargetObject = applicationContext.getBean(targetObject);
Method m = null;
try {
m = otargetObject.getClass().getMethod(targetMethod, new Class[] {JobExecutionContext.class});
m.invoke(otargetObject, new Object[] {context});
} catch (SecurityException e) {
log.info(e.getMessage());
} catch (NoSuchMethodException e) {
log.info(e.getMessage());
}
} catch (Exception e) {
throw new JobExecutionException(e);
}
}
public void setApplicationContext(ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
public void setTargetObject(String targetObject) {
this.targetObject = targetObject;
}

public void setTargetMethod(String targetMethod) {
this.targetMethod = targetMethod;
}
}

5.SpringCronJob.java

package com.test.util.schedule;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.quartz.JobExecutionContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.test.service.PMenuService;

@Component
public class SpringCronJob{

private static final Log log = LogFactory.getLog(SpringCronJob.class);

@Autowired
private PMenuService pmService;

/**
* 定时打印
*/
public void pmenuCount(JobExecutionContext context){
log.info("执行结果为：" + pmService.count());
}
}

注：
本文实现基于spirng4.0以上版本，quartz-2.2.1版本，低版本的quartz需要的spring版本也不同，否则会出现各种错误