更改石英作業計划

Question

我正在考慮使用Quartz調度我的應用程序，但是在所有情況下，作業觸發器似乎都是一次性活動，對觸發器的更改需要重新部署應用程序才能生效。
有什么方法可以使作業觸發器檢查作業時間表的更改而無需重新部署代碼？
謝謝，

Answer 1

1. 陷阱一些用戶驅動的事件，例如更新文本值，例如cron字符串以安排作業
2. 找到並取消安排/刪除舊作業並觸發。

3. 使用新的觸發器再次安排作業。

    public static <T> T scheduleCronJob(Class<T> 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); }