Spring task 调度周期 Cron Expressions表达式含义

本文详细介绍了CronCronTrigger表达式的使用方法及其组成部分。CronCronTrigger是一种用于配置org.quartz.Trigger实例的工具,通过cron表达式来定义任务的执行周期。cron表达式由六个或七个字段组成,分别对应秒、分、小时、日期、月份、周几以及年份,每个字段支持特定的值范围和特殊字符。

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        Cron CronTrigger的表达式是用来配置实例,org.quartz.Trigger的子类。cron表达式是一个字符串组成的六、七子表达式(字段),描述个人日程安排的细节。    空格隔开,这些字段可以包含任何允许的值和各种组合为该字段允许的字符。

         

名称是否必要允许值允许的特殊字符

秒(Seconds)

Y

0-59

, - * /

分(Minutes)

Y

0-59

, - * /

时(Hours)

Y

0-23

, - * /

几号(Day of month)

Y

1-31

, - * ? / L W C

月(Month)

Y

0-11 or JAN-DEC

, - * /

周几(Day of week)

Y

1-7 or SUN-SAT

, - * ? / L C #

年(Year)

N

empty or 1970-2099

, - * /



示例 : 

ExpressionMeans
0 0 12 * * ?Fire at 12:00 PM (noon) every day
0 15 10 ? * *Fire at 10:15 AM every day
0 15 10 * * ?Fire at 10:15 AM every day
0 15 10 * * ? *Fire at 10:15 AM every day
0 15 10 * * ? 2005Fire at 10:15 AM every day during the year 2005
0 * 14 * * ?Fire every minute starting at 2:00 PM and ending at 2:59 PM, every day
0 0/5 14 * * ?Fire every 5 minutes starting at 2:00 PM and ending at 2:55 PM, every day
0 0/5 14,18 * * ?Fire every 5 minutes starting at 2:00 PM and ending at 2:55 PM, AND fire every 5 minutes starting at 6:00 PM and ending at 6:55 PM, every day
0 0-5 14 * * ?Fire every minute starting at 2:00 PM and ending at 2:05 PM, every day
0 10,44 14 ? 3 WEDFire at 2:10 PM and at 2:44 PM every Wednesday in the month of March
0 15 10 ? * MON-FRIFire at 10:15 AM every Monday, Tuesday, Wednesday, Thursday and Friday
0 15 10 15 * ?Fire at 10:15 AM on the 15th day of every month
0 15 10 L * ?Fire at 10:15 AM on the last day of every month
0 15 10 ? * 6LFire at 10:15 AM on the last Friday of every month
0 15 10 ? * 6LFire at 10:15 AM on the last Friday of every month
0 15 10 ? * 6L 2002-2005Fire at 10:15 AM on every last friday of every month during the years 2002, 2003, 2004, and 2005
0 15 10 ? * 6#3Fire at 10:15 AM on the third Friday of every month
0 0 12 1/5 * ?Fire at 12 PM (noon) every 5 days every month, starting on the first day of the month
0 11 11 11 11 ?Fire every November 11 at 11:11 AM


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