Spring Cron scheduler “disable pattern”

Question

My application loads some cron patterns from a properties file. I\'m using the @Scheduled annotation like this:

@Scheduled(cron = "${config.         


        

Answer 1

If you're stuck pre Spring 5.1.0 (SpringBoot < 2.1), your only option may be to disable the bean/service with the @Scheduled method altogether, for example by using a @ConditionalOnProperty("my.scheduleproperty.active") annotation and not setting the property (or setting it to false)

Answer 2

If it was a cron expression, you could have used below which makes the cron run on 2099

59 59 23 31 12 ? 2099

But spring scheduler does not take a year as input. This is what I have found to defer it for some extended period. Below will run on 29 Feb which will be a leap year.

0 0 0 29 2 ?

Answer 3

Per the Javadocs, as of Spring 5.1.0 the @Scheduled annotation can accept "-" as the cron expression to disable the cron trigger.

The special value "-" indicates a disabled cron trigger, primarily meant for externally specified values resolved by a ${...} placeholder.