我需要一个cron表达式

Question

我需要一个cron表达式来在完整的5:30 am工作日执行一些代码。

我试过这个

30 5 * * 1-5

但它在晚上10:30执行。在互联网上搜索我找到了这个

0 30 5 ? * MON,TUE,WED,THU,FRI *

但红宝石给我看了一条异常信息说：

C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rufus-scheduler-3.5.2/lib/rufus/scheduler/jobs.rb:674:in `next_time_from': undefined method `next_time' for nil:NilClass (NoMethodError)
    from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rufus-scheduler-3.5.2/lib/rufus/scheduler/jobs.rb:668:in `set_next_time'
    from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rufus-scheduler-3.5.2/lib/rufus/scheduler/jobs.rb:636:in `initialize'
    from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rufus-scheduler-3.5.2/lib/rufus/scheduler.rb:617:in `new'
    from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rufus-scheduler-3.5.2/lib/rufus/scheduler.rb:617:in `do_schedule'
    from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/rufus-scheduler-3.5.2/lib/rufus/scheduler.rb:224:in `cron'
    from E:/Marcos_Guerra/RubyWorkspace/calisoft-suite/Proyectos/RedmineApi/api.rb:30:in `<main>'

这是我的代码：

ENV['TZ'] = 'America/New_York'

scheduler = Rufus::Scheduler.new
scheduler.cron '0 30 5 ? * MON,TUE,WED,THU,FRI *' do
    begin
      # do something that might fail...
      # every day of the week at 05:30 am
      puts RedmineConnector.resetYourLife(user,pass)
    rescue => e

    end
  end
sleep 3

我正在使用Rufus Gem

Answer 1

According to the project README，您可以使用时区指定cron作业，如下所示：

scheduler.cron '30 5 * * 1-5 America/New_York' do
  # ...
end

这意味着“正好在工作日的上午5:30”，如您所愿。