如果要在每个页面上放置一些数据，则很容易使用拦截器：
public class PagePopulationInterceptor extends HandlerInterceptorAdapter { @Autowired private UserService userService; @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { if(modelAndView != null) { User user = userService.findOne(request); modelAndView.addObject("myUserProfile", user); } }}为此，还需要在webmvc-config.xml（webapp的spring配置）中声明拦截器：
<mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**"/> <bean /> </mvc:interceptor> <!-- other interceptors (locale, theme and so on) --></mvc:interceptors>
