| 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
|
, - * /
|
The '*' character is used to specify all values. For example, "*" in the
minute field means "every minute".
“*”字符被用來指定所有的值。如：”*“在分鐘的字段域裏表示“每分鐘”。
The '?' character is allowed for the day-of-month and day-of-week fields. It
is used to specify 'no specific value'. This is useful when you need to specify
something in one of the two fileds, but not the other. See the examples below
for clarification.
“?”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”。當你需要通過在這兩個域中的一個來指定一些東西的時候，它是有用的。看下面的例子你就會明白。
月份中的日期和星期中的日期這兩個元素時互斥的一起應該通過設置一個問號(?)來表明不想設置那個字段
The '-' character is
used to specify ranges For example "10-12" in the hour field means "the hours
10, 11 and 12".
“-”字符被用來指定一個範圍。如：“10-12”在小時域意味着“10點、11點、12點”。
The
',' character is used to specify additional values. For example "MON,WED,FRI" in
the day-of-week field means "the days Monday, Wednesday, and Friday".
“,”字符被用來指定另外的值。如：“MON,WED,FRI”在星期域裏表示”星期一、星期三、星期五”.
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
