Quartz Crone Scheduler结束时间

Question

I'm trying to make this trigger run every 3 minutes between 8:15 and 9:45. Is there a possible cron expression that could achive that? If not, can there be more schedules for one trigger or do I just need more triggers?

        String startDateStr = "2017-10-01 00:00:00.0";
        String endDateStr = "2018-06-30 00:00:00.0";

        Date startDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S").parse(startDateStr);
        Date endDate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S").parse(endDateStr);

        CronTrigger lesson1 = newTrigger()
                .withIdentity("lesson1", "Lessons")
                .startAt(startDate)
                .withSchedule(CronScheduleBuilder.cronSchedule("0 15/3 8 * * ? *").withMisfireHandlingInstructionDoNothing())
                .endAt(endDate)
                .forJob("Lesson1", "Lessons")
                .build();

Answer 1

Have you tried the following:

0 15-45/3 8 * * ?   

EDIT:

What about this one:

0 15-45/3 8-9 * * ?