【spring】task 任務調度（定時任務）

1.定時任務的幾種實現能夠看這裏：http://gong1208.iteye.com/blog/1773177

2.須要導入spring的jar包，能夠參看以前的【spring】相關文章

3.這裏使用的是基於註解的方式完成定時任務，在spring的配置文件中配置以下 applicationContext.xml:

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:task="http://www.springframework.org/schema/task"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
            http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
            http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.1.xsd">
  <context:component-scan base-scan="com.raipeng.work.spring.task"/>
  <task:annotation-driven executor="executor" scheduler="scheduler" proxy-target-class="true"/>
  <task:executor id="executor" pool-size="5"/>
  <task:scheduler id="scheduler" pool-size="10"/>
</beans>

4.須要定時的 HelloWorldTask.java

package com.raipeng.work.spring.task;

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

/**
 * Created by 111 on 2015/11/23.
 */
@Component
public class HelloWorldTask {

    @Scheduled(cron = "0 * 16 * * ?")  //天天從下午四點到四點59分每分鐘執行一次
    public void sayHello(){
        System.out.println("hello world!");
    }
}

 

5.控制檯打印結果

INFO: Root WebApplicationContext: initialization completed in 930 ms
[2015-11-23 04:46:12,680] Artifact work-test:war exploded: Artifact is deployed successfully
[2015-11-23 04:46:12,680] Artifact work-test:war exploded: Deploy took 2,397 milliseconds
十一月 23, 2015 4:46:19 下午 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory D:\Program Files\apache-tomcat-7.0.59-windows-x64\apache-tomcat-7.0.59\webapps\manager
十一月 23, 2015 4:46:19 下午 org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deployment of web application directory D:\Program Files\apache-tomcat-7.0.59-windows-x64\apache-tomcat-7.0.59\webapps\manager has finished in 83 ms
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!
hello world!

6.cronExpression（時間表達式）具體使用方法能夠看這裏：cronExpressiion表達式

7.以上只是一個簡單的使用，定時任務能夠用於日誌分析，選擇定時在午夜完成。