问题
I want to set the scheduler with a quartz cron expression which will trigger every 15 days ,for example 1st and 15th of every month.The 0 15 10 15 * ? is triggering only on 15th of every month.
回答1:
I have tested this and the following expression works fine
"0 0 0 1,15 * ?"
the 1,15 statement fires triggers on 1st and 15th of every month at 00:00 hours. You can change the first three zeroes to fire them at a particular time you want.
the 1st zero -> seconds
the 2nd zero -> minutes
the 3rd zero -> hours
回答2:
The following also works fine, it executes your command on the 15th and the 30th at 02:00 AM of every month:
0 2 */15 * * <yourCommand>
回答3:
You just need to append 1 with a comma to your expression at 'Day of Month' block.
Rest is fine !
0 15 10 1,15 * ?
This will schedule to run every 1st and 15th day of the month and 10:15 am.
回答4:
0 0 1,15 * * “At 00:00 on day-of-month 1 and 15.”
0 0 1,15 1 * “At 00:00 on day-of-month 1 and 15 in January.”
0 0 1,15 1 6 “At 00:00 on day-of-month 1 and 15 and on Saturday in January.”
来源：https://stackoverflow.com/questions/22604362/quartz-cron-expression-run-every-15-days-ie-twice-in-a-month