java crontriggerbean_spring定时器----CronTriggerBean

1. 层次结构

2. CronTriggerBean

.java

public class CronTriggerBean extends CronTrigger

implements JobDetailAwareTrigger, BeanNameAware, InitializingBean {

/** Constants for the CronTrigger class */

private static final Constants constants = new Constants(CronTrigger.class);

private JobDetail jobDetail;

private String beanName;

/**

* Register objects in the JobDataMap via a given Map.

*/

public void setJobDataAsMap(Map jobDataAsMap) {

getJobDataMap().putAll(jobDataAsMap);

}

/**

* Set the misfire instruction via the name of the corresponding

*/

public void setMisfireInstructionName(String constantName) {

setMisfireInstruction(constants.asNumber(constantName).intValue());

}

/**

* Set a list of TriggerListener names for this job, referring to

* non-global TriggerListeners registered with the Scheduler.

*/

public void setTriggerListenerNames(String[] names) {

for (int i = 0; i < names.length; i++) {

addTriggerListener(names[i]);

}

}

/**

* Set the JobDetail that this trigger should be associated with.

*/

public void setJobDetail(JobDetail jobDetail) {

this.jobDetail = jobDetail;

}

public JobDetail getJobDetail() {

return this.jobDetail;

}

public void setBeanName(String beanName) {

this.beanName = beanName;

}

public void afterPropertiesSet() throws ParseException {

if (getName() == null) {

setName(this.beanName);

}

if (getGroup() == null) {

setGroup(Scheduler.DEFAULT_GROUP);

}

if (getStartTime() == null) {

setStartTime(new Date());

}

if (getTimeZone() == null) {

setTimeZone(TimeZone.getDefault());

}

if (this.jobDetail != null) {

setJobName(this.jobDetail.getName());

setJobGroup(this.jobDetail.getGroup());

}

}

}     3. 定时器配置规则

示例：

4. 说明        <1> 通常只用两个属性 JobDetail和CronExpression,前者确定任务的名称、组等信息,后者确定任务的触发时间、间隔时间等信息;

<2> CronExpression属性在CronTrigger类中。

<3> 示例：  0/15 * * * *   执行时刻：0,15,30,45