按照老師的方式 配置好了配置文件但是啟動(dòng)后不執(zhí)行 是什么原因

<bean id="SimpleTrigger" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">

<property name="targetObject" ref="timing" />

<property name="targetMethod" value="run" />

<property name="concurrent" value="false"/>

</bean>?

?<bean id="myCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">

? ?<property name="jobDetail" ?ref="SimpleTrigger"/>

? ?<property name="cronExpression" ?value="0/5 * * ? * *"/>

</bean>?

<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">

? ?<property name="triggers">

? ? ? ?<list>

? ? ? ? ? ?<ref bean="myCronTrigger"/>

? ? ? ?</list>

? ?</property>

</bean>

@Component("timing")

public class Timing {

public void run() {

Date date = new Date();

SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

System.out.println("MyBean Executes!" + sf.format(date));

}

}