Spring Quartz2 動態任務的實例詳解
此處使用的是Quartz中SimpleScheduleBuilder類，非CronScheduleBuilder，CronScheduleBuilder是Cron表達式的。具體請自行百度。
實現代碼：
/**
* 新增任務
* @param scheduleJob
* @throws Exception
*/
@Override
@SuppressWarnings("unchecked")
public void addJobSimple(ScheduleJob scheduleJob) throws Exception{
TriggerKey triggerKey = TriggerKey.triggerKey(scheduleJob.getJobName(), scheduleJob.getJobGroup());
//任務觸發
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()) || "分鐘".equals(scheduleJob.getTimeType()) ||
"minute".equalsIgnoreCase(scheduleJob.getTimeType())){
simpleScheduleBuilder.withIntervalInMinutes(scheduleJob.getTimeValue()).repeatForever();
}else if("時".equals(scheduleJob.getTimeType()) || "小時".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();
}
ScheduleBuilderSimpleTrigger> 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 + "新增簡單任務："+JasonUtils.Object2String(scheduleJob));
}else {
this.updateJobCron(scheduleJob);
}
}
需要注意是的，當定時任務只執行一次時，就要仔細看代碼，如上面的簡單定時任務，剛開始是我這樣的：
simpleScheduleBuilder.withIntervalInSeconds(scheduleJob.getTimeValue());
結果只執行一次，而我需要的是不斷循環執行，最后改成：
simpleScheduleBuilder.withIntervalInSeconds(scheduleJob.getTimeValue()).repeatForever();
可以看出，后面多了個：repeatForever()，表示永遠重復。
如果是希望執行多少次后不執行，就使用：.withRepeatCount(triggerRepeatCount)，如下：
simpleScheduleBuilder.withIntervalInHours(scheduleJob.getTimeValue()).withRepeatCount(triggerRepeatCount);
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