timer定时器在项目初始化的时候注入service为null

Question

定时器任务开始执行的时候，一直没办法加载，后来发现是service为null
这是定时器执行的方法，在调用TimeWorkAction以后，里面的service就是null了

 public class WorkTimer extends HttpServlet{


    //时间间隔(一天)  
    private static final long PERIOD_DAY = 24 * 60 * 60 * 1000;

    @Override
    public void init() throws ServletException {
        // TODO Auto-generated method stub
        System.out.println("开始执行定时器查询");
        Calendar calendar = Calendar.getInstance();  
        calendar.set(Calendar.HOUR_OF_DAY, 19); //夜晚23点 
        calendar.set(Calendar.MINUTE, 57);
        calendar.set(Calendar.SECOND, 0);
        Date date=calendar.getTime(); //第一次执行定时任务的时间  
        TimerTask task = new TimeWorkAction();
        Timer timer = new Timer();
        timer.schedule(task,date, PERIOD_DAY);
        super.init();
    }


}

 @Component
public class TimeWorkAction extends TimerTask{

    WorkService workService = (WorkService)ApplicationContextUtil.getBean("workService");
    Work work = (Work)ApplicationContextUtil.getBean("work");
    public void run(){
        try {
            //获取当前日期
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
            Date date1 = new Date();
            String dates = simpleDateFormat.format(date1);
            long currentDate = 0;
            try {
                currentDate = simpleDateFormat.parse(dates).getTime();
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            //获取权限用户
            List userName = workService.getName();
            for (int i = 0; i < userName.size(); i++) {
                Object obj = userName.get(i);
                String name = obj.toString();
                List addDate = workService.addDate(name,currentDate);
                if(addDate.isEmpty()){
                    work = new Work();
                    work.setName(name);
                    work.setWorkDate(currentDate);
                    workService.save(work);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public WorkService getWorkService() {
        return workService;
    }

    public void setWorkService(WorkService workService) {
        this.workService = workService;
    }

    public Work getWork() {
        return work;
    }

    public void setWork(Work work) {
        this.work = work;
    }


}

之前service直接private WorkService workService也不行

Answer 1

http://www.cnblogs.com/zy1411/p/5443287.html