l转自：http://www.cnblogs.com/linjiqin/p/4530311.html
定时任务轮询比如任务自服务器启动就开始运行，并且每隔5秒执行一次。
以下用spring注解配置定时任务。
1、添加相应的schema
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xmlns:task="
xsi:schemaLocation="
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.0.xsd"
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完整schema如下：
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<
beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.0.xsd">
</
beans
>
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2、配置自动调度的包和定时开关
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<!-- 注解扫描包 -->
<
context:component-scan
base-package="com.ljq.web.controller.annotation" />
<!-- Enables the Spring Task @Scheduled programming model -->
<
task:executor
id="executor" pool-size="5" />
<
task:scheduler
id="scheduler" pool-size="10" />
<
task:annotation-driven
executor="executor" scheduler="scheduler" />
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3、添加调度测试类
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package
com.ljq.web.controller.annotation;
import
org.springframework.scheduling.annotation.Scheduled;
import
org.springframework.stereotype.Service;
/**
* 调度测试类(每隔5秒执行一次)
*
* @author Administrator
*
*/
@Service
public
class
TaskTest {
@Scheduled
(cron =
"0/5 * * * * ? "
)
public
void
myTestWork() {
System.out.println(System.currentTimeMillis());
}
}
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备注：cron = "0/5 * * * * ? "从左到右依次是：秒、分、小时、日、月、周、年