这几天想写一个动态添加任务项目找了找Spring下的自带定时功能发现还真有，然后网上找了找资料写了个demo
写了两种方式来执行定时的任务（XML配置和注解）
先建两个普通的任务类（XML配置调用的任务类）
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | package com.ebbbe.task; /** * 基于配置xml的定时器 * @author Lese */ public class TaskTest { public void show(){ System.out.println( "XML配置:is show run" ); } public void print(){ System.out.println( "XML配置:is print run" ); } } |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | package com.ebbbe.task; import org.springframework.scheduling.annotation.Scheduled; import org.springframework.stereotype.Component; /** * 基于注解的定时器 * @author Lese */ @Component public class TestTaskAnnotation { /** * 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( "注解：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( "注解：is print run" ); } } |
在写一个测试的Main方法
| 1 2 3 4 5 6 7 8 9 10 11 12 13 | package com.ebbbe.test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; /** * @author Lese */ public class Main { public static void main(String[] args) { ApplicationContext ctx = new ClassPathXmlApplicationContext( "spring-mvc.xml" ); } } |
spring-mvc.XML
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | < 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 = "TaskTest" class = "com.ebbbe.task.TaskTest" ></ bean > < task:scheduled-tasks > <!-- 这里表示的是从第五秒开始 ，每三秒执行一次 （而不是 三分之五 秒执行一次哦~~） --> < task:scheduled ref = "TaskTest" method = "show" cron = "*/5 * * * * ?" /> < task:scheduled ref = "TaskTest" method = "print" cron = "*/10 * * * * ?" /> </ task:scheduled-tasks > <!-- 自动扫描的包名 --> < context:component-scan base-package = "com.ebbbe.task" /> </ beans >
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