改变石英作业计划

我正在考虑使用Quartz安排我的应用程序，但在所有情况下，作业触发器似乎是一次性活动，并且对触发器的更改需要重新部署应用程序才能生效。
是否有任何方法可以让作业触发器检查作业计划的更改而无需重新部署代码？
谢谢，

Answer 1

1. 捕获一些用户驱动的事件，例如更新文本值，例如用于计划作业的cron-string
2. 找到并取消计划/删除旧作业并触发。

3. 使用新触发器再次安排作业。

    public static  T scheduleCronJob(Class clazz, String cronString, String uid){ try{ if(cronString == null){ throw new CronStringConfigurationException(); } String jobGroupName = "cronJobsGroup"; String jobName = "cronJob" + uid; String triggerGroupName = "cronTriggers"; String triggerName = "triggerFor" + uid; JobDetail jobDetail = new JobDetail(jobName, jobGroupName, clazz); CronTrigger trigger = new CronTrigger( triggerName, triggerGroupName, jobName, jobGroupName, cronString); JobDataMap jobDataMap = new JobDataMap(); jobDetail.setJobDataMap(jobDataMap); getScheduler().scheduleJob(jobDetail, trigger); } catch(Exception e){ // print error message, throw stack trace } return null; } public static void reloadCronJob(Class clazz, String cronString, String uid) throws SystemException, ParseException, SchedulerException, CronStringConfigurationException, PortalException{ // locate the job String jobGroupName = "cronJobs"; String jobName = "jobFor" + uid; if(cronString == null){ throw new CronStringConfigurationException(); } JobDetail jobDetail = null; Class jobClass = null; // remove the old job/trigger if it exists try{ jobDetail = scheduler.getJobDetail(jobName, jobGroupName); if(jobDetail != null){ jobClass = jobDetail.getJobClass(); } scheduler.deleteJob(jobName, jobGroupName); } catch(Exception e){ e.printStackTrace(); } if(jobClass == null){ jobClass = clazz; } // create a new trigger scheduleCronJob(jobClass, expandoColumnName, uid); System.out.println("(re)scheduled job " + jobName + " using new cron string " + cronString); }