关于Failed to convert property value of type [org.quartz.impl.StdScheduler] to required type [org.springframework.scheduling.quartz.SchedulerFactoryBean

private SchedulerFactoryBeanscheduler;

    public SchedulerFactory BeangetScheduler() {
        return scheduler;
    }

    public void setScheduler(SchedulerFactoryBean scheduler) {
        this.scheduler = scheduler;
    }

   <property name="scheduler">
           <ref bean="schedulerFactoryBean" />
        </property>

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

   private StdScheduler scheduler;

    public StdScheduler getScheduler() {
        return scheduler;
    }

    public void setScheduler(StdScheduler scheduler) {
        this.scheduler = scheduler;
    }