定时任务简单实例

1、java util包中自带的Timer及TimerTask作定时任务
public class TimerTaskTestXml {
	
	private int delay=0;
	private long period=0;
	
	public void setDelay(int delay) {
		this.delay = delay;
	}

	public void setPeriod(long period) {
		this.period = period;
	}

	public TimerTaskTestXml(int dealy,long period){
		this.delay=dealy;
		this.period=period;
		this.timeTask();
	}
	
	public void timeTask(){
		Timer timer=new Timer();
		timer.schedule(new TimerTask(){
			@Override
			public void run() {
				queryAlipays();
				try{
					testfunction();
				}catch(Exception ex){
					System.out.println(ex.getMessage());
				}
				System.out.println("dssssssss");
			}
		}, delay, period);
	}
	
	public void queryAlipays(){
		List<AlipayInfoEntity> alipays=AlipayInfoEntity.findAllAlipayInfoEntitys();
		if(alipays!=null){
			for(AlipayInfoEntity aie:alipays)
				System.out.println(aie.getOutTradeNo()+"----------"+aie.getTradeStatus());
		}
	}
	
	public void testfunction(){
		try{
			int i=0;
			i=i/0;
		}catch(Exception ex){
			ex.printStackTrace();
			System.out.println("function aaa is exception");
		}
	}
}

spring配置文件如下：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.springframework.org/schema/beans"  xmlns:task="http://www.springframework.org/schema/task" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd       http://www.springframework.org/schema/task  http://www.springframework.org/schema/task/spring-task-3.0.xsd">

<bean id="timerTaskTestXml" class="tv.bgsc.paymentplatform.routine.test.TimerTaskTestXml">
    <constructor-arg index="0" value="2000"/>
    <constructor-arg index="1" value="3000"/>
</bean>

</beans>

2、spring3.0及以上版本自带的@scheduler注释
@Component
public class SpringSchedulerTaskTest {

	/******
	 * 每隔1分钟执行
	 */
	@Scheduled(cron="* */1 * * * ?")
	public void schedulerTask(){
		this.queryTransactioins();
	}
	
	public void queryTransactioins(){
		List<TransactionEntity> trans=TransactionEntity.findAllTransactionEntitys();
		if(trans!=null){
			for(TransactionEntity te:trans)
				System.out.println(te.getOrderNo()+"----------"+te.getUserNo());
		}
	}
}

spring配置文件如下：
省略了xml文件：将1中的<bean></bean>部分去掉，换为下面的代码即可。更详细的配置请参考spring参考文档。</span>
<task:annotation-driven scheduler="myScheduler" mode="proxy"/> //相当于是启动定时任务
<task:scheduler id="myScheduler" pool-size="10"/>
注意:使用注解时，该类要被扫描到，不然注解无用，就不能执行了。

3、spring与quartz搭配使用
public class SpringQuartzTaskTtest{

	/*******
	 * 业务逻辑处理
	 */
	public void doTask(){
		this.queryAlipays();
		System.out.println("---------------------------");
	}
	
	public void queryAlipays(){
		List<AlipayInfoEntity> alipays=AlipayInfoEntity.findAllAlipayInfoEntitys();
		if(alipays!=null){
			for(AlipayInfoEntity aie:alipays)
				System.out.println(aie.getOutTradeNo()+"----------"+aie.getTradeStatus());
		}
	}
}

spring配置文件如下：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.springframework.org/schema/beans"  xmlns:task="http://www.springframework.org/schema/task" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd       http://www.springframework.org/schema/task  http://www.springframework.org/schema/task/spring-task-3.0.xsd">

<!-- 线程执行器配置，用于任务注册 -->
<bean id="executor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
    <property name="corePoolSize" value="10"/>
    <property name="maxPoolSize" value="100"/>
    <property name="queueCapacity" value="500"/>
</bean>

<!-- 定义业务逻辑处理类 -->
<bean id="springQuartzTaskTtest" class="tv.bgsc.paymentplatform.routine.test.SpringQuartzTaskTtest"></bean>

<!-- 高度业务逻辑 -->
<bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
	<property name="targetObject" ref="springQuartzTaskTtest" />
 	<property name="targetMethod" value="doTask" />
</bean>

<!-- 增加高度触发器 -->
<bean id="taskTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
	<property name="jobDetail" ref="jobDetail"/>
	<property name="startDelay" value="10000"/>
	<property name="repeatInterval" value="60000"/>
</bean>
<!-- <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
	<property name="jobDetail" ref="jobDetail" />
 	<property name="cronExpression" value="10 */2 * * * ?" />
</bean> -->

<!-- 配置调度工厂 -->
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
	<property name="triggers">
		<list>
			<!-- <ref bean="cronTrigger"/> -->
			<ref bean="taskTrigger"/>
		</list>
	</property>
	<property name="taskExecutor" ref="executor"/>
</bean>
</beans>

注：在这里使用Quartz的Maven依赖如下：
<dependency>
 <groupId>org.quartz-scheduler</groupId>
 <artifactId>quartz</artifactId>
 <version>1.8.4</version>
</dependency>
而我首次使用的是quratz版本为2.1.1时cronExpression及repeatInterval在对应类或超类中没有找到对应的set方法，因此不能像上面那样使用。感兴趣的朋友可以去研究一下，弄出来了，可以贴出来大家分享！