Quartz CronTrigger未在指定的startAt（）时间触发

Question

我有一个场景，我需要安排一个工作，必须每天在特定时间执行。当我用特定的时间作为调度器的开始时间来调度它时，quartz不会在设定的开始时间触发作业，而是在下一个周期即延迟24小时后触发作业。即使在检查下一个FireTime时，我们也会得到一天的延迟。

例如：我需要每天安排一项工作在晚上6点进行。今天（2018年3月27日）下午5点开始。工作没有开始，下一次火灾时间是2018年3月28日下午6点。

代码段：

Date startDateTime = new Date(scheduler.getStartDateTime());
Calendar calendar = GregorianCalendar.getInstance();
calendar.setTime(startDateTime);
int hours = calendar.get(Calendar.HOUR_OF_DAY);
int minutes = calendar.get(Calendar.MINUTE);
CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(scheduleTriggerName, schdeuleGroupName).startAt(startDateTime).withSchedule(dailyAtHourAndMinute(hours, minutes)).build();
JobDetail jobDetail = this.getJobDetail(schdeuleJobName, schdeuleGroupName);

SchedulerFactoryBean schedulerFactoryBean= new SchedulerFactoryBean();

QuartzAutowireBeanFactory jobFactory = new QuartzAutowireBeanFactory();
jobFactory.setApplicationContext(applicationContext);
schedulerFactoryBean.setJobFactory(jobFactory);
schedulerFactoryBean.scheduleJob(jobDetail, trigger)// scheduling the job

Answer 1

解决方案

一班轮：

Cron只处理1分钟的决议

calendar.setTime(startDateTime);
            calendar.set(Calendar.SECOND, 0); // this was the solution
            calendar.set(Calendar.MILLISECOND, 0); // this was the solution
            int hours = calendar.get(Calendar.HOUR_OF_DAY);
            int minutes = calendar.get(Calendar.MINUTE);
            trigger = TriggerBuilder.newTrigger();
            trigger.startAt(calendar.getTime()).withSchedule(dailyAtHourAndMinute(hours, minutes));

CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(scheduleTriggerName, schdeuleGroupName).startAt(startDateTime).withSchedule(dailyAtHourAndMinute(hours, minutes)).build();