在action中 使用@Resource注解service层 总是得到null

在action中 使用@Resource注解service层 总是得到null dao层和service层中的都能正常得到值
但是使用getBean（）却可以得到service什么原因求指教。。。
架构是s2sh纯注解。

@Service("serviceFaceImpl")
public class ServiceFaceImpl implements ServiceFace {
@Resource
private UserLoginService userLoginService;
@Resource
private LeaveService leaveService;
@Override
public void setUserLoginService(UserLoginService userLoginService) {
this.userLoginService = userLoginService;
}

@Override
public UserLoginService getUserLoginService() {
return userLoginService;
}
@Override
public LeaveService getLeaveService() {
return leaveService;
}
@Override
public void setLeaveService(LeaveService leaveService) {
this.leaveService = leaveService;
}

}

action 中：
public class WebBaseAction extends ActionSupport implements ServletRequestAware,ServletResponseAware {

/**
*
*/
private static final long serialVersionUID = 1L;
//public ServiceFace serviceFace;
protected static Logger log = Logger.getLogger(WebBaseAction.class);
public HttpServletRequest request ;
public HttpServletResponse response ;
@Resource
protected ServiceFace serviceFace;//这个无法得到

//protected ServiceFace serviceFace = (ServiceFace) SpringIoc.getApplicationContext().getBean("serviceFaceImpl");//这个可以得到serviceFace

public ServiceFace getServiceFace() {
return serviceFace;
}

public void setServiceFace(ServiceFace serviceFace) {
this.serviceFace = serviceFace;
}