使用springMVC怎么将Model数据传递到jsp页面中

@Controller // 加入到IOC容器//@RequestMapping(value="/topic")public class TopicAction {  @Resource(name = "topicServiceImpl")  private TopicService topicService;    @RequestMapping(value="/index")  public String index(Model model){    List<Topic> topicList = topicService.getAllTopicList();    model.addAttribute("topics", topicList);    System.out.println("封装的model="+model);    return "index.jsp";  }}