Grails创建例程 [英] Grails creating routines

问题描述

比方说，我在数据库中有一个特定信息，需要在一天的特定时间通过电子邮件为特定用户发送特定信息.

Let's say, i have a specific information in the database that needs to be sent for a specific user by email in a specific time of the day.

a)如何在Grails中创建一个例程，该例程基本上是始终在运行的动作-而不与任何事件相关联?假设，每个小时运行一次该操作.

a) How can i create a routine in Grails, which is basically an action that is always running - without being associated with any event? Let's say, every hour that action is runned.

我在想这样的事情:

while(true){

...
myCodeHere
...
wait 30minutes
}

这会真正起作用吗?没有太多的处理?而且无论如何，我如何才能永久执行一项操作.我有这样做的特定方法吗? 提前致谢， RR

Will this actually work? Without too much processing? And how can i have an action permanently running no matter what. I there is a specific way of doing this? Thanks in advanced, RR

推荐答案

避免使用石英和插件，您可以使用纯Spring框架

Avoiding quartz and plugins you may use pure Spring Framework

1)添加到容器

<task:annotation-driven executor="executor" scheduler="scheduler"/>
<task:executor id="executor" pool-size="5"/>
<task:scheduler id="scheduler" pool-size="10"/>

(不要忘记定义任务和tx命名空间)

(do not forget to define task and tx namespaces)

2)创建一些bean并添加方法

2) Create some bean and add method

@Scheduled(fixedDelay=4000)
public void method() {
  // do something every 4 seconds
}

完成！ 有关更多信息，请参见 spring框架

finish! For more info see spring framework

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