Azure WebJob不接受有效的(?)CRON表达式 [英] Azure WebJob not accepting a valid(?) CRON expression
问题描述
我使用
对我来说,在
问题..
- 差异在哪里?
- Microsoft是否以传统的方式拥有一个带有前导零的专有
实现? - 如果标准是分钟小时日期月平均日,
前导零描述是什么?
请查看文档:
CRON表达式由以下6个字段组成:{second} {minute}
因此,前面的0表示秒。
* * * * * *要执行的命令
┬┬┬┬┬┬
│││││ │
│││││││
││││││└────星期(0 - 7)(0或7是星期日,或使用名称)
│ │││└────────月(1 - 12)
│││└───────月(1 - 31) )
│| └────────────小时(0 - 23)
│└───────── ───────min(0 - 59)
└──────────────second (0 - 59)
I used crontab.guru to create a very simple CRON expression with the desired behavior to execute every day at 3:15 (AM) and this is the result: 15 3 * * *
Unfortunately for me, in Azure Portal this does not work, but if I add a leading 0
to my expression as such, 0 15 3 * * *
, Azure will accept it, while crontab.guru
will tell me it is wrong. The specification according to crontab.guru
is: minute hour date month weekday.
The questions..
- From where comes the discrepancy?
- Is it Microsoft that in their traditional ways have a proprietary implementation with a leading zero?
- If the standard is minute hour date month weekday, what does the leading zero describe?
Have a look at the documentation:
The CRON expression is composed of 6 fields: {second} {minute} {hour} {day} {month} {day of the week}.
So the first 0 describes the seconds.
* * * * * * command to be executed
┬ ┬ ┬ ┬ ┬ ┬
│ │ │ │ │ │
│ │ │ │ │ │
│ │ │ │ │ └───── day of week (0 - 7) (0 or 7 are Sunday, or use names)
│ │ │ │ └────────── month (1 - 12)
│ │ │ └─────────────── day of month (1 - 31)
│ | └──────────────────── hour (0 - 23)
│ └───────────────────────── min (0 - 59)
└────────────────────────────── second(0 - 59)
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