不过在实际的工作中,很少会直接用到它。通常都是用的spring-quartz组件,直接通过配置,让spring框架来自动装配
如下就是spring框架集成quartz组件,配置定时任务的方法
1. Maven依赖
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< dependency >
< groupId >org.springframework</ groupId >
< artifactId >spring-context-support</ artifactId >
< version >4.0.5.RELEASE</ version >
</ dependency >
< dependency >
< groupId >org.quartz-scheduler</ groupId >
< artifactId >quartz</ artifactId >
< version >2.2.1</ version >
</ dependency >
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其中quartz包是核心包,它负责实现定时任务;spring-context-support包中包含了spring对quartz的集成工具
2. Spring配置
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< bean id = "task" class = "..." ></ bean >
< bean id = "job" class = "org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean" >
< property name = "targetObject" ref = "task" />
< property name = "targetMethod" value = "run" />
</ bean >
< bean id = "cronTrigger" class = "org.springframework.scheduling.quartz.CronTriggerFactoryBean" >
< property name = "jobDetail" ref = "job" />
< property name = "cronExpression" value = "0 0 0 * * ?" />
</ bean >
< bean id = "scheduler" class = "org.springframework.scheduling.quartz.SchedulerFactoryBean" >
< property name = "triggers" >
< list >
< ref bean = "cronTrigger" />
</ list >
</ property >
< property name = "autoStartup" value = "true" />
</ bean >
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spring对quartz的配置共分四步:
- 配置实际执行业务逻辑类,即普通的spring bean
- 配置JobDetail类,如上例中的MethodInvokingJobDetailFactoryBean,该工厂类需要指定执行业务逻辑的bean及调用的方法名
- 配置Trigger(任务触发)类,如上例中的CronTriggerFactoryBean,是基于cron表达式触发任务,需要指定JobDetail和cron表达式
- 配置scheduler(定时任务)类,如上例中的SchedulerFactoryBean,是将trigger注册到定时任务中,使trigger生效
以上就是对基本方法调用的任务和基于cron表达式触发的一个定时任务的例子,实际在Java Web项目中也大多采用这种模式
原文链接:http://blog.csdn.net/sadfishsc/article/details/50808027