定时任务解决方案4 spring quartz 分布式解决利用数据库保存任务

最新推荐文章于 2023-03-10 23:13:05 发布

Allchin

最新推荐文章于 2023-03-10 23:13:05 发布

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分类专栏： Schedule 文章标签： quartz 任务数据库 spring triggers class

本文链接：https://blog.youkuaiyun.com/citi007/article/details/6532077

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本文详细介绍了如何使用Spring和Quartz实现分布式任务调度，包括配置文件、任务实现及注意事项。重点阐述了如何通过数据库存储任务、使用锁机制确保任务执行的唯一性，并提供了具体的XML配置示例和自定义任务类。

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分布式的任务我大概学习了下,

主要是利用quartz cluster将任务保存到数据库中,

然后利用一定的lock机制,

保证任务执行单例执行等等特性

还是先看spring配置文件

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd" default-lazy-init="false"> <description>使用Spring Quertz 分布式定时任务配置</description>    <bean id="jobDetailOfCluder" class="org.springframework.scheduling.quartz.JobDetailBean"> <property name="jobClass" value="cn.test.schedule.spring.SpringQuertzClusterTaskSchedulerTester" />  <property name="requestsRecovery" value="true"/> </bean>  <bean id="scheduleTiggerForCluders" class="org.springframework.scheduling.quartz.SimpleTriggerBean"> <property name="jobDetail" ref="jobDetailOfCluder"/> <property name="repeatInterval" value="1000"/> </bean>  <bean id="schedulerFactoryForCluders" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> <property name="configLocation" value="WEB-INF/classes/cn/test/schedule/spring/quartz-cluster.properties" /> <property name="triggers"> <list> <ref bean="scheduleTiggerForCluders" /> </list> </property> <property name="dataSource" ref="dataSource"/> <property name="applicationContextSchedulerContextKey" value="applicationContext"/> <property name="startupDelay" value="5"/> </bean> </beans>

然后是

quartz-cluster.properties

文件

#============================================================================ # Configure Main Scheduler Properties #============================================================================ org.quartz.scheduler.instanceName = ClusteredScheduler org.quartz.scheduler.instanceId = AUTO #============================================================================ # Configure ThreadPool #============================================================================ org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool org.quartz.threadPool.threadCount = 5 org.quartz.threadPool.threadPriority = 5 org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true #============================================================================ # Configure JobStore ,importent ,you must modified the table info handlely #============================================================================ org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX org.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegate org.quartz.jobStore.misfireThreshold = 60000 org.quartz.jobStore.useProperties = false org.quartz.jobStore.tablePrefix = QRTZ_ org.quartz.jobStore.isClustered = true org.quartz.jobStore.clusterCheckinInterval =15000

除了配置,我们自己需要实现job的内容

package cn.test.schedule.spring; import org.apache.struts2.ServletActionContext; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; import org.springframework.context.ApplicationContext; import org.springframework.scheduling.quartz.QuartzJobBean; /** * Title:SpringQuertzClusterTaskSchedulerTester * Description: * 应为要持久化等特性操作,需要继承 QuartzJobBean * 由于要被持久化,所以不能存放xxxxManager类似对象, * 只能从每次从QuartzJobBean注入的ApplicationContext 中去取出 * * * Copyright: Copyright (c) 2011 * @author Allchin * * @version 1.0 $ 2011-5-19 下午08:03:00 * * */ public class SpringQuertzClusterTaskSchedulerTester extends QuartzJobBean { private ApplicationContext applicationContext=null; @Override protected void executeInternal(JobExecutionContext arg0) throws JobExecutionException { System.out.println(ServletActionContext.getServletContext().getServerInfo()); } public void setApplicationContext(ApplicationContext applicationContext) { this.applicationContext = applicationContext; } }

针对不同的数据库,

要导入的quartz 工作时需要的表与库的sql文件,

这些都可以从网上下载到.