使用quartz的定时任务调

Question

/**
* 添加任务
*
* @param job
* @throws SchedulerException
*/
public void addJob(ScheduleJob job) throws SchedulerException {
if (job == null || !ScheduleJob.STATUS_RUNNING.equals(job.getStatus().toString())) {
logger.error("{}添加调度任务失败,job={}", CommonConstants.SystemModul.SCHEDULE, job.toString());
return;
}

    Scheduler scheduler = schedulerFactoryBean.getScheduler();
    TriggerKey triggerKey = TriggerKey.triggerKey(job.getName(), job.getJobGroup());
    CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);
    // 不存在，创建一个
    if (null == trigger) {
        Class clazz = ScheduleJob.CONCURRENT_IS.equals(job.getIsConcurrent()) ? QuartzJobFactory.class : QuartzJobFactoryDisallowConcurrentExecution.class;
        JobDetail jobDetail = JobBuilder.newJob(clazz).withIdentity(job.getName(), job.getJobGroup()).build();
        jobDetail.getJobDataMap().put("scheduleJob", job);
        CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
        trigger = TriggerBuilder.newTrigger().withIdentity(job.getName(), job.getJobGroup()).withSchedule(scheduleBuilder).build();
        scheduler.scheduleJob(jobDetail, trigger);
    } else {
        // Trigger已存在，那么更新相应的定时设置
        CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
        // 按新的cronExpression表达式重新构建trigger
        trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
        // 按新的trigger重新设置job执行
        scheduler.rescheduleJob(triggerKey, trigger);
    }
}

Answer 1

使用quartz的定时任务调度，此方法在多服务器会重复执行，怎么办