@Controller
@RequestMapping("/demo")
public class DemoController {

    @Autowired
    private DemoService demoService;

    @RequestMapping(value = "/greet")
    public String greetWorld(
            @RequestParam(value = "name", required = false, defaultValue = "World") String name, Model model) {
        String showCase = demoService.demoShow();
        model.addAttribute("msg", "Greet " + name + " " + showCase);

        return "demo/hello";
    }

@Service
public class DemoServiceImpl implements DemoService {

    @Autowired
    private DemoManager demoManager;

    public String demoShow() {
        return demoManager.showCase();
    }
}

@Repository
public class DemoManagerImpl implements DemoManager {

    @Autowired
    private DemoDao demoDao;

    public String showCase() {
        return demoDao.showCase();
    }
}

public class DemoListener implements ServletContextListener {

public void contextInitialized(ServletContextEvent servletContextEvent) {
        try {
            AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
            ctx.scan(new String[] { "demo.service","demo.manager","demo.dao" });
            ctx.refresh();
            Map<String, Object> services = ctx.getBeansWithAnnotation(Job.class);

...