org.springframework.beans.factory.BeanCreationException:。。。FactoryBean which is currently in creatio

Error creating bean with name ‘doubanJob’: FactoryBean which is currently in creation returned null from getObject

<!-- 豆瓣抓取配置开始 -->    <bean id="doubanJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">        <property name="targetObject" ref="doubanJob"></property>        <property name="targetMethod" value="myTask"></property>    </bean>    <bean id="doubanTigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">        <property name="jobDetail" ref="doubanJob"></property>        <!-- <property name="cronExpression" value="0 0 2 * * ?"></property> -->        <property name="cronExpression" value="0/20 * * * * ?"></property>    </bean>    <!-- 豆瓣抓取配置结束 -->

上面代码中，配置，id与ref同名了，改成不同的名字就好了