1、spring的配置文件
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.0.xsd">
<task:annotation-driven /> <!-- 定时器开关-->
<bean id="myTaskXml" class="com.spring.task.MyTaskXml"></bean>
<task:scheduled-tasks>
<!-- 这里表示的是每隔五秒执行一次 -->
<task:scheduled ref="myTaskXml" method="show" cron="*/5 * * * * ?" />
<task:scheduled ref="myTaskXml" method="print" cron="*/10 * * * * ?"/>
</task:scheduled-tasks>
<!-- 自动扫描的包名 -->
<context:component-scan base-package="com.spring.task" />
</beans>
2、基于xml的定时器任务
package com.spring.task;
/**
* 基于xml的定时器
* @author hj
*/
public class MyTaskXml {
public void show(){
System.out.println("XMl:is show run");
}
public void print(){
System.out.println("XMl:print run");
}
}
3、基于注解的定时器任务
package com.spring.task;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
/**
* 基于注解的定时器
* @author hj
*/
@Component
public class MyTaskAnnotation {
/**
* 定时计算。每天凌晨 01:00 执行一次
*/
@Scheduled(cron = "0 0 1 * * *")
public void show(){
System.out.println("Annotation：is show run");
}
/**
* 心跳更新。启动时执行一次，之后每隔2秒执行一次
*/
@Scheduled(fixedRate = 1000*2)
public void print(){
System.out.println("Annotation：print run");
}
}
4、测试
package com.spring.test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Main {
public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("spring-mvc.xml");
}
}
运行结果：
Annotation：print run
Annotation：print run
Annotation：print run
XMl:print run
XMl:is show run
Annotation：print run
Annotation：print run
spring定时任务执行两次bug参考链接：http://nkliuliu.iteye.com/blog/816335
转载链接:http://blog.csdn.net/wxwzy738/article/details/25158787
转载请注明原文地址: https://ju.6miu.com/read-969062.html
