Spring的Task任务

Spring Task提供两种方式进行配置，一种是annotation(标注)，而另外一种就是XML配置了。因为任务调度这样的需求，通常改动都是比较多的，如果用annotation的方式的话，改动就变得麻烦了，必须去重新编译。所以，我只是选择用XML配置的方式。

1.XML方式

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	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.xsd
          http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd">

	<bean id="reminderProcessor" class="com.foo.task.ReminderProcessor">
		<property name="workers">
			<array value-type="com.foo.task.Worker">
				<ref bean="projectScheduleRemindWorker" />
			</array>
		</property>
	</bean>

    <!-- 配置任务线性池 -->
 	<task:executor id="executor" pool-size="3" />
	<task:scheduler id="scheduler" pool-size="3" />
    <!-- 启用annotation方式 -->
	<task:annotation-driven scheduler="scheduler"
		executor="executor" proxy-target-class="true" />

	<task:scheduled-tasks scheduler="scheduler">
		<task:scheduled ref="reminderProcessor" method="process"
			cron="0 0 12 * * ?" />
	</task:scheduled-tasks>
</beans>

2.注解

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:sec="http://www.springframework.org/schema/security"
	xmlns:task="http://www.springframework.org/schema/task"
	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
		http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.1.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:tx="http://www.springframework.org/schema/tx">
	<!—spring扫描注解的配置   -->
	<context:component-scan base-package="com.test.cache" />
	<!-- 配置任务线性池 -->
	<task:scheduler id="scheduler" pool-size="10" />
	<task:executor id="executor" pool-size="10" />
	<!—开启这个配置，spring才能识别@Scheduled注解   -->
	<task:annotation-driven scheduler="scheduler" executor="executor" />
</beans>

java的类

package com.test.cache;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

@Component
public class CrontabTask {
	
	@Scheduled(cron = "0 0/5 * * * *")
	public void autoBid() {
		System.out.println("执行定时任务");
	}
	
}

参考： http://zywang.iteye.com/blog/949123

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