quartz 中service不能注入？

@Controller
public class SystemJob extends QuartzJobBean {
 
    private TaoBaoService taoBaoService;
 
    @Override
    protected void executeInternal(final JobExecutionContext context)
            throws JobExecutionException {
        System.out.println(taoBaoService);
        taoBaoService.test();
    }
 
    @Autowired
    public void setTaoBaoService(final TaoBaoService taoBaoService) {
        this.taoBaoService = taoBaoService;
    }
 
    @RequestMapping("test")
    public void test() {
        System.out.println(taoBaoService);
        System.out.println("test..");
    }
}

<!-- quartz -->
<bean id="systemJob" class="org.springframework.scheduling.quartz.JobDetailBean">
    <property name="jobClass" value="com.pqc.tbk.web.scheduling.SystemJob"></property>
</bean>
<bean id="myCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
    <property name="jobDetail">
        <ref bean="systemJob"/>
    </property>
    <property name="cronExpression" value="0 10 0 * * ? *"/>
</bean>
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
    <property name="triggers">
        <list>
            <ref bean="myCronTrigger"/>
        </list>
        </property>
    </bean>

直接通过地址栏访问test打印的不是null

但是通过任务执行，打印的是null，奇怪的是既然service是null，执行test()方法竟然没有报空指针？应该是注入成功了啊？