| 字段 | 允許值 | 允許的特殊字符 | ||
|---|---|---|---|---|
秒 |
0-59 |
, - * / |
||
分 |
0-59 |
, - * / |
||
小時 |
0-23 |
, - * / |
||
日期 |
1-31 |
, - * ? / L W C |
||
月份 |
1-12 或者 JAN-DEC |
, - * / |
||
星期 |
1-7 或者 SUN-SAT |
, - * ? / L C # |
||
年（可選） |
留空, 1970-2099 |
, - * / |
“-”字符被用來指定一個範圍。
“*”字符被用來指定所有的值。
“?”字符只在日期域和星期域中使用。它被用來指定“非明確的值”。
“,”字符被用來指定另外的值。For example "MON,WED,FRI" in the day-of-week field means "the days Monday, Wednesday, and Friday".
L("last") 例如：用在day-of-month字段意思是 "這個月最後一天"；
# 第幾個。
/ 符號前表示開始時間，符號後表示每次遞增的值；
C 指和calendar聯繫後計算過的值。例：在day-of-month 字段用“5C”指在這個月第5天或之後包括calendar的第一天；在day-of-week字段用“1C”指在這週日或之後包括calendar的第一天。
W("weekday") 只能用在day-of-month字段。用來描敘最接近指定天的工作日（週一到週五）。例如：在day-of-month字段用“15W”指“最接近這個月第15天的工作日”，即如果這個月第15天是週六，那麼觸發器將會在這個月第14天即週五觸發；如果這個月第15天是週日，那麼觸發器將會在這個月第 16 天即週一觸發；如果這個月第15天是週二，那麼就在觸發器這天觸發。注意一點：這個用法只會在當前月計算值，不會越過當前月。“W”字符僅能在day- of-month指明一天，不能是一個範圍或列表。也可以用“LW”來指定這個月的最後一個工作日。
The '/' character is used to specify increments. For example "0/15" in the seconds field means "the seconds 0, 15, 30, and 45". And "5/15" in the seconds field means "the seconds 5, 20, 35, and 50". Specifying '*' before the '/' is equivalent to specifying
0 is the value to start with. Essentially, for each field in the expression, there is a set of numbers that can be turned on or off. For seconds and minutes, the numbers range from 0 to 59. For hours 0 to 23, for days of the month 0 to 31, and for months 1
to 12. The "/" character simply helps you turn on every "nth" value in the given set. Thus "7/6" in the month field only turns on month "7", it does NOT mean every 6th month, please note that subtlety.
The 'L' character is allowed for the day-of-month and day-of-week fields. This character is short-hand for "last", but it has different meaning in each of the two fields. For example, the value "L" in the day-of-month field means "the last day of the month"
- day 31 for January, day 28 for February on non-leap years. If used in the day-of-week field by itself, it simply means "7" or "SAT". But if used in the day-of-week field after another value, it means "the last xxx day of the month" - for example "6L" means
"the last friday of the month". When using the 'L' option, it is important not to specify lists, or ranges of values, as you'll get confusing results.
L是‘last’的省略寫法可以表示day-of-month和day-of-week域，但在兩個字段中的意思不同，例如day-of-month域中表示一個月的最後一天，
如果在day-of-week域表示‘7’或者‘SAT’，如果在day-of-week域中前面加上數字，它表示一個月的最後幾天，例如‘6L’就表示一個月的最後一個
星期五，
The 'W' character is allowed for the day-of-month field. This character is used to specify the weekday (Monday-Friday) nearest the given day. As an example, if you were to specify "15W" as the value for the day-of-month field, the meaning is: "the nearest weekday
to the 15th of the month". So if the 15th is a Saturday, the trigger will fire on Friday the 14th. If the 15th is a Sunday, the trigger will fire on Monday the 16th. If the 15th is a Tuesday, then it will fire on Tuesday the 15th. However if you specify "1W"
as the value for day-of-month, and the 1st is a Saturday, the trigger will fire on Monday the 3rd, as it will not 'jump' over the boundary of a month's days. The 'W' character can only be specified when the day-of-month is a single day, not a range or list
of days
.
The 'L' and 'W' characters can also be combined for the day-of-month expression to yield 'LW', which translates to "last weekday of the month".
The '#' character is allowed for the day-of-week field. This character is used to specify "the nth" XXX day of the month. For example, the value of "6#3" in the day-of-week field means the third Friday of the month (day 6 = Friday and "#3" = the 3rd one in
the month). Other examples: "2#1" = the first Monday of the month and "4#5" = the fifth Wednesday of the month. Note that if you specify "#5" and there is not 5 of the given day-of-week in the month, then no firing will occur that month.
The 'C' character is allowed for the day-of-month and day-of-week fields. This character is short-hand for "calendar". This means values are calculated against the associated calendar, if any. If no calendar is associated, then it is equivalent to having an
all-inclusive calendar. A value of "5C" in the day-of-month field means "the first day included by the calendar on or after the 5th". A value of "1C" in the day-of-week field means "the first day included by the calendar on or after sunday".
關於cronExpression的介紹:
字段 允許值 允許的特殊字符
秒 0-59 , - * /
分 0-59 , - * /
小時 0-23 , - * /
日期 1-31 , - * ? / L W C
月份 1-12 或者 JAN-DEC , - * /
星期 1-7 或者 SUN-SAT , - * ? / L C #
年（可選） 留空, 1970-2099 , - * /
表達式意義
"0 0 12 * * ?" 每天中午12點觸發
"0 15 10 ? * *" 每天上午10:15觸發
"0 15 10 * * ?" 每天上午10:15觸發
"0 15 10 * * ? *" 每天上午10:15觸發
"0 15 10 * * ? 2005" 2005年的每天上午10:15觸發
"0 * 14 * * ?" 在每天下午2點到下午2:59期間的每1分鐘觸發
"0 0/5 14 * * ?" 在每天下午2點到下午2:55期間的每5分鐘觸發
"0 0/5 14,18 * * ?" 在每天下午2點到2:55期間和下午6點到6:55期間的每5分鐘觸發
"0 0-5 14 * * ?" 在每天下午2點到下午2:05期間的每1分鐘觸發
"0 10,44 14 ? 3 WED" 每年三月的星期三的下午2:10和2:44觸發
"0 15 10 ? * MON-FRI" 週一至週五的上午10:15觸發
"0 15 10 15 * ?" 每月15日上午10:15觸發
"0 15 10 L * ?" 每月最後一日的上午10:15觸發
"0 15 10 ? * 6L" 每月的最後一個星期五上午10:15觸發
"0 15 10 ? * 6L 2002-2005" 2002年至2005年的每月的最後一個星期五上午10:15觸發
"0 15 10 ? * 6#3" 每月的第三個星期五上午10:15觸發
每天早上6點
0 6 * * *
每兩個小時
0 */2 * * *
晚上11點到早上8點之間每兩個小時，早上八點
0 23-7/2，8 * * *
每個月的4號和每個禮拜的禮拜一到禮拜三的早上11點
0 11 4 * 1-3
1月1日早上4點
0 4 1 1 *
quartz的高級特性不僅如此
1 數據庫存儲
2 集羣支持
3 數據庫持久化任務，trigger
4 trigger 的停止，運行
5 任務的任意添加
6 比corntrigger 更詳盡的任務安排
7 線程的內部數據交換