每小时以外的30分钟后每隔30分钟便会显示一次Java Quartz Scheduler cron表达式

Question

I know how to run a job at every 30 minutes is by using following cron expression:

0 0/30 * * * ?

It runs the job at every 30 minutes like ::

10:30, 11, 11:30, 12.

I want to make it run every after 30 minutes quarter past the hours like::

10:15, 10:45, 11:15, 11:45.

How do I make it run every after 30 minutes quarter past the hours as explained above?

UPDATE :: I have seen that link. The solution stated in the given link is not working. It started cron job at quarter past hour but It is running on every second of the minute like 15:15:00, 15:15:01, 15:15:02.....

Thanks

Answer 1

Just give it a minute value of 15,45

as in

0 15,45 * * * ? *

see www.cronmaker.com

Answer 2

试试这个15表示开始时间：

0 15/30 * * * ?

Answer 3

Another variant of the answers already provided is:

0 15-45/30 * * * ?

Which when tested with CronMaker gave me the below results (Note the different start times):

As you've had some issues with the other cron expressions, I scheduled a job with the above and it has been running fine