How to get Service? in the Job class of Quartz

how to get Service, in the Job class of Quartz and Service is Null in the Job class.
found several methods on the Internet but did not solve it. The code is below. Please take a look at it.

error message

java.lang.NullPointerException
    at com.wufu.util.SpringContextUtil.getBean(SpringContextUtil.java:26)
    at com.xinfu.quartz.QuartzJob.execute(QuartzJob.java:27)
    at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
    at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)

declare timing tasks

   long time = System.currentTimeMillis()+2000;
            SchedulerFactory sf = new StdSchedulerFactory();
            Scheduler sched = sf.getScheduler();
            Date runTime = DateBuilder.evenSecondDate(timestampToDate(time));
            JobDetail job = JobBuilder.newJob(QuartzJob.class)
                    .withIdentity("job1", "group1")
                    .usingJobData("param", 389)
                    .build();
            Trigger trigger = TriggerBuilder.newTrigger()
                    .withIdentity("trigger1", "group1")
                    .startAt(runTime)
                    .build();

Job class

public class QuartzJob implements Job {
    @Override
    public void execute(JobExecutionContext content) throws JobExecutionException {
        try {
            RefundService rs = (RefundService)SpringContextUtil.getBean("RefundService");
            System.out.println(rs.refund());
        }catch (Exception e){
            e.printStackTrace();
        }
    }
}

get the Bean utility class

@Component
public class SpringContextUtil implements ApplicationContextAware {
    private static ApplicationContext context;

    @Override
    @SuppressWarnings("static-access" )
    public void setApplicationContext(ApplicationContext contex) throws BeansException {
        this.context = contex;
    }
    public static Object getBean(String beanName){
        return context.getBean(beanName);
    }
    public static String getMessage(String key){
        return context.getMessage(key, null, Locale.getDefault());
    }
    public static Object getBeanByClass(Class elementType) {
        return context.getBean(elementType);
    }
}

ApplicationContext.xml

 <bean id="SpringContextUtil" class="com.XXX.util.SpringContextUtil"  lazy-init="false"></bean>
<bean id="RefundService" class="com.XXX.serv.RefundService"  ></bean>
<bean id="QuartzJob" class="com.XXX.quartz.QuartzJob"></bean>