Spring 定时执行任务配置

1，三种方式： quartz,Timer,Executor 详情参考 ： http://blog.csdn.net/52rainbow/article/details/4004206

2，具体例子：

http://www.blogjava.net/sundc/archive/2007/10/19/154355.html

http://beyondlovew.iteye.com/blog/436973

3，还有一点要说明，quartz能够实现动态设置Cron表达式，也能够设置手工触发方式来控制scheduler.

注意下面划线部分，想要手工控制scheduler，能够先获取SchedulerFactoryBean,经过它，能够控制调度，还能够取得CronTriggerBean，进而动态设置cronExpression。

<bean id="push2UcScheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
		<property name="triggers">
			<list>
				<ref local="push2UcTrigger"/>
			</list> 
		</property>
		<property name="autoStartup" value="false" /> 	
		<property name="schedulerName" value="push2UcScheduler" />
	</bean>
	<bean id="push2UcTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean"> 
        <property name="jobDetail"> 
            <ref bean="push2UcJob"/> 
        </property>  <property name="cronExpression"> <!--每1分钟向UC推送一次 --> <value>0 0/1 * * * ?</value> </property>      </bean>
	
	<bean id="push2UcJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
		<property name="targetObject">
			<ref bean="ucManagerAO"/>
		</property>
	    <property name="targetMethod">
			<value>addItemToUc</value>
		</property>
		<property name="concurrent" value="false" /> 
	</bean>