Jenkins系列
1.环境说明操作系统：win7旗舰版64bit
jdk:sun JDK1.7.0_80 64bit
tomcat:apache-tomcat-8.0.41
jenkins：2.32.3LST
本系列教程如果没有特殊说明，都会默认采用此环境。
2.定时构建的写法
勾选『Poll SCM』,点击输入框右边的帮助图标：
https://images2015.cnblogs.com/blog/829967/201704/829967-20170402232408320-1636053260.png
弹出的内容中详细解释了定时构建的用法，并给出了几个例子：
This field follows the syntax of cron (with minor differences). Specifically, each line consists of 5 fields separated by TAB or whitespace:
MINUTE HOUR DOM MONTH DOW
MINUTE Minutes within the hour (
0–59)
HOUR The hour of the day (
0–23)
DOM The day of the month (
1–31)
MONTH The month (
1–12)
DOW The day of the week (
0–7) where 0 and 7 are Sunday.
To specify multiple values
for one field, the following operators are available. In the order of precedence,
* specifies all valid values
M
-N specifies a range of values
M
-N/X or */X steps by intervals of X through the specified range or whole valid range
A,B,...,Z enumerates multiple values
To allow periodically scheduled tasks to produce even load on the system, the symbol H (
for “hash”) should be used wherever possible. For example, using 0 0 * * * for a dozen daily jobs will cause a large spike at midnight. In contrast, using H H * * * would still execute each job once a day, but not all at the same time, better using limited resources.
The H symbol can be used with a range. For example, H H(
0-7) * * * means some time between 12:00 AM (midnight) to 7:59 AM. You can also use step intervals with H, with or without ranges.
The H symbol can be thought of as a random value over a range, but it actually is a hash of the job name, not a random
function, so that the value remains stable for any given project.
Beware that
for the day of month field, short cycles such as */3 or H/3 will not work consistently near the end of most months, due to variable month lengths. For example, */3 will run on the 1st, 4th, …31st days of a long month, then again the next day of the next month. Hashes are always chosen in the 1-28 range, so H/3 will produce a gap between runs of between 3 and 6 days at the end of a month. (Longer cycles will also have inconsistent lengths but the effect may be>
Empty lines and lines that start with # will be ignored as comments.
In addition, @yearly, @annually, @monthly, @weekly, @daily, @midnight, and @hourly are supported as convenient aliases. These use the hash system
for automatic balancing. For example, @hourly is the same as H * * * * and could mean at any time during the hour. @midnight actually means some time between 12:00 AM and 2:59 AM.
Examples:
# every fifteen minutes (perhaps at :
07, :22, :37, :52)
H
/15 * * * *
# every ten minutes
in the first half of every hour (three times, perhaps at :04, :14, :24)
H(
0-29)/10 * * * *
# once every two hours at
45 minutes past the hour starting at 9:45 AM and finishing at 3:45 PM every weekday.
45 9-16/2 * * 1-5
# once
in every two hours slot between 9 AM and 5 PM every weekday (perhaps at 10:38 AM, 12:38 PM, 2:38 PM, 4:38 PM)
H H(
9-16)/2 * * 1-5
# once a day on the 1st and 15th of every month except December
3.示例
在22:21新建的项目，希望在22:22触发构建。
https://images2015.cnblogs.com/blog/829967/201703/829967-20170329233533842-1480020521.gif
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