spring 定时任务

在spring读取bean 的配置文件中配置如下

<bean id="beanScheduler" class="org.springframework.scheduling.quartz.CronTriggerBean">
        <property name="jobDetail">
            <bean id="work1"
                class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
                <property name="targetObject" ref="xxx" />//定时任务的类注册的beanid
                <property name="targetMethod" value="XXX" />//引用bean的某个方法
            </bean>
        </property>
        <property name="cronExpression" value="0 0 4 * * ?" />//方法执行时间
    </bean>
    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean"
        lazy-init="false" autowire="no">
        <property name="triggers">
            <list>                  
                 <ref bean="beanScheduler"/>
            </list>
        </property>
        <property name="quartzProperties">
            <props>
                <prop key="org.quartz.jobStore.class">
                    org.quartz.simpl.RAMJobStore
                </prop>
            </props>
        </property>
    </bean>