Spring cron expression for every day 1:01:am

I'm trying to have my code execute on a fixed schedule, based on a Spring cron expression. I would like the code to be executed every day at 1:01:am. I tried the following expression, but this didn't fire up for me. What's wrong with the syntax here?

@Scheduled(cron = "0 1 1 ? * *")
public void resetCache() {
    // ...
}

gipinani

Try with:

@Scheduled(cron = "0 1 1 * * ?")

Below you can find the example patterns from the spring forum:

* "0 0 * * * *" = the top of every hour of every day.
* "*/10 * * * * *" = every ten seconds.
* "0 0 8-10 * * *" = 8, 9 and 10 o'clock of every day.
* "0 0 8,10 * * *" = 8 and 10 o'clock of every day.
* "0 0/30 8-10 * * *" = 8:00, 8:30, 9:00, 9:30 and 10 o'clock every day.
* "0 0 9-17 * * MON-FRI" = on the hour nine-to-five weekdays
* "0 0 0 25 12 ?" = every Christmas Day at midnight

Cron expression is represented by six fields:

second, minute, hour, day of month, month, day(s) of week

(*) means match any

*/X means "every X"

? ("no specific value") - useful when you need to specify something in one of the two fields in which the character is allowed, but not the other. For example, if I want my trigger to fire on a particular day of the month (say, the 10th), but I don't care what day of the week that happens to be, I would put "10" in the day-of-month field and "?" in the day-of-week field.

PS: In order to make it work, remember to enable it in your application context: https://docs.spring.io/spring/docs/3.2.x/spring-framework-reference/html/scheduling.html#scheduling-annotation-support

For my scheduler, I am using it to fire at 6 am every day and my cron notation is:

0 0 6 * * *

If you want 1:01:am then set it to

0 1 1 * * *

Complete code for the scheduler

@Scheduled(cron="0 1 1 * * *")
public void doScheduledWork() {
    //complete scheduled work
}

** VERY IMPORTANT

To be sure about the firing time correctness of your scheduler, you have to set zone value like this (I am in Istanbul):

@Scheduled(cron="0 1 1 * * *", zone="Europe/Istanbul")
public void doScheduledWork() {
    //complete scheduled work
}

You can find the complete time zone values from here.

Note: My Spring framework version is: 4.0.7.RELEASE

user3298173

You can use annotate your method with @Scheduled(cron ="0 1 1 * * ?").

0 - is for seconds

1- 1 minute

1 - hour of the day.

Something missing from gipinani's answer

@Scheduled(cron = "0 1 1,13 * * ?", zone = "CST")

This will execute at 1.01 and 13.01. It can be used when you need to run the job without a pattern multiple times a day.

And the zone attribute is very useful, when you do deployments in remote servers. This was introduced with spring 4.

One thing i've noticed is: spring CronTrigger is not cron. You may end up with 7 parameters in a valid cron expression (wich you can validate on cronmaker.com) and then spring not accept it. Most of cases you just delete the last parameter and everything works fine.

Spring cron expression for every day 1:01:am

@Scheduled(cron = "0 1 1 ? * *")

for more information check this information:

https://docs.oracle.com/cd/E12058_01/doc/doc.1014/e12030/cron_expressions.htm

来源：https://stackoverflow.com/questions/26147044/spring-cron-expression-for-every-day-101am

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