Spring Quartz2 动态任务的实例详解
时间：2021-01-18 14:46:30|栏目：JSP代码|点击： 次
Spring Quartz2 动态任务的实例详解
此处使用的是Quartz中SimpleScheduleBuilder类，非CronScheduleBuilder，CronScheduleBuilder是Cron表达式的。具体请自行百度。
实现代码：
/**
* 新增任务
* @param scheduleJob
* @throws Exception
*/
@Override
@SuppressWarnings("unchecked")
public void addJobSimple(ScheduleJob scheduleJob) throws Exception{
TriggerKey triggerKey = TriggerKey.triggerKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
//任务触发
Trigger trigger = scheduler.getTrigger(triggerKey);
if (null == trigger) {
JobDetail jobDetail = JobBuilder.newJob((Class<? extends Job>) Class.forName(scheduleJob.getClazz()))
.withIdentity(scheduleJob.getJobName(), scheduleJob.getJobGroup()).build();
jobDetail.getJobDataMap().put("scheduleJob", scheduleJob);
SimpleScheduleBuilder simpleScheduleBuilder = SimpleScheduleBuilder.simpleSchedule();
if("秒".equals(scheduleJob.getTimeType()) ||
"second".equalsIgnoreCase(scheduleJob.getTimeType())){
simpleScheduleBuilder.withIntervalInSeconds(scheduleJob.getTimeValue()).repeatForever();
}else if("分".equals(scheduleJob.getTimeType()) || "分钟".equals(scheduleJob.getTimeType()) ||
"minute".equalsIgnoreCase(scheduleJob.getTimeType())){
simpleScheduleBuilder.withIntervalInMinutes(scheduleJob.getTimeValue()).repeatForever();
}else if("时".equals(scheduleJob.getTimeType()) || "小时".equals(scheduleJob.getTimeType()) ||
"hour".equalsIgnoreCase(scheduleJob.getTimeType())){
simpleScheduleBuilder.withIntervalInHours(scheduleJob.getTimeValue()).repeatForever();
}else if("天".equals(scheduleJob.getTimeType()) ||
"date".equalsIgnoreCase(scheduleJob.getTimeType())){
simpleScheduleBuilder.withIntervalInHours(scheduleJob.getTimeValue()).repeatForever();
}
ScheduleBuilder<SimpleTrigger> schedBuilder = simpleScheduleBuilder.withMisfireHandlingInstructionNextWithRemainingCount();
trigger =TriggerBuilder.newTrigger().withIdentity(scheduleJob.getJobName(), scheduleJob.getJobGroup())
.withSchedule(schedBuilder).build();
trigger = TriggerBuilder.newTrigger().withIdentity(scheduleJob.getJobName(), scheduleJob.getJobGroup()).withSchedule(schedBuilder).build();
scheduler.scheduleJob(jobDetail, trigger);
log.info(CC.LOG_PREFIX + "新增简单任务："+JasonUtils.Object2String(scheduleJob));
}else {
this.updateJobCron(scheduleJob);
}
}
需要注意是的，当定时任务只执行一次时，就要仔细看代码，如上面的简单定时任务，刚开始是我这样的：
simpleScheduleBuilder.withIntervalInSeconds(scheduleJob.getTimeValue());
结果只执行一次，而我需要的是不断循环执行，最后改成：
simpleScheduleBuilder.withIntervalInSeconds(scheduleJob.getTimeValue()).repeatForever();
可以看出，后面多了个：repeatForever()，表示永远重复。
如果是希望执行多少次后不执行，就使用：.withRepeatCount(triggerRepeatCount)，如下：
simpleScheduleBuilder.withIntervalInHours(scheduleJob.getTimeValue()).withRepeatCount(triggerRepeatCount);
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