Java 每天 1:01:am 的 Spring cron 表达式
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Spring cron expression for every day 1:01:am
提问by d-man
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?
我正在尝试根据 Spring cron 表达式按固定计划执行我的代码。我希望代码每天在 1:01:am 执行。我尝试了以下表达式，但这并没有让我兴奋。这里的语法有什么问题？
@Scheduled(cron = "0 1 1 ? * *")
public void resetCache() {
// ...
}
回答by gipinani
Try with:
尝试：
@Scheduled(cron = "0 1 1 * * ?")
Below you can find the example patterns from the spring forum:
您可以在下面找到来自 spring 论坛的示例模式：
* "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:
Cron 表达式由六个字段表示：
second, minute, hour, day of month, month, day(s) of week
(*)means match any
(*)表示匹配任何
*/Xmeans "every X"
*/X意思是“每个 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.
?（“无特定值”） - 当您需要在允许字符的两个字段之一中指定某些内容时很有用，而另一个字段则不允许。例如，如果我希望我的触发器在一个月的某一天（比如 10 号）触发，但我不在乎那一天是一周中的哪一天，我会在当天输入“10”-月字段和“？” 在星期字段中。
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
PS：为了使其工作，请记住在您的应用程序上下文中启用它：https: //docs.spring.io/spring/docs/3.2.x/spring-framework-reference/html/scheduling.html#scheduling-注释支持
回答by user3298173
You can use annotate your method with @Scheduled(cron ="0 1 1 * * ?").
您可以使用@Scheduled(cron ="0 1 1 * * ?").
0 - is for seconds
0 - 是秒
1- 1 minute
1-1 分钟
1 - hour of the day.
1 - 一天中的一个小时。
回答by Maleen Abewardana
Something missing from gipinani's answer
gipinani的回答中缺少一些东西
@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.
这将在 1.01 和 13.01 执行。当您需要每天多次在没有模式的情况下运行作业时，可以使用它。
And the zone attribute is very useful, when you do deployments in remote servers. This was introduced with spring 4.
当您在远程服务器上进行部署时，区域属性非常有用。这是在 spring 4 中引入的。
回答by Bahadir Tasdemir
For my scheduler, I am using it to fire at 6 am every day and my cron notation is:
对于我的调度程序，我使用它在每天早上 6 点启动，我的 cron 符号是：
0 0 6 * * *
If you want 1:01:am then set it to
如果你想要 1:01:am 然后将它设置为
0 1 1 * * *
Complete code for the scheduler
调度程序的完整代码
@Scheduled(cron="0 1 1 * * *")
public void doScheduledWork() {
//complete scheduled work
}
** VERY IMPORTANT
**非常重要
To be sure about the firing time correctness of your scheduler, you have to set zone value like this (I am in Istanbul):
为了确保调度程序的触发时间正确性，您必须像这样设置区域值（我在伊斯坦布尔）：
@Scheduled(cron="0 1 1 * * *", zone="Europe/Istanbul")
public void doScheduledWork() {
//complete scheduled work
}
You can find the complete time zone values from here.
您可以从这里找到完整的时区值。
Note: My Spring framework version is: 4.0.7.RELEASE
注意：我的 Spring 框架版本是：4.0.7.RELEASE
回答by Irlan Cidade
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.
我注意到的一件事是：spring CronTrigger 不是 cron。您可能会在有效的 cron 表达式中得到 7 个参数（您可以在 cronmaker.com 上进行验证），然后 spring 不接受它。大多数情况下，您只需删除最后一个参数，一切正常。
回答by MACCXpace
Spring cron expression for every day 1:01:am
每天 1:01:am 的 Spring cron 表达式
@Scheduled(cron = "0 1 1 ? * *")
@Scheduled(cron = "0 1 1 ? * *")
for more information check this information:
有关更多信息，请查看以下信息：
https://docs.oracle.com/cd/E12058_01/doc/doc.1014/e12030/cron_expressions.htm
https://docs.oracle.com/cd/E12058_01/doc/doc.1014/e12030/cron_expressions.htm
