spring MVC jsp链接地址跳转

spring MVC jsp链接地址跳转

//此写法是不带参数的访问页面地址

@Controller

 @RequestMapping(value = "/olearn/olearn_topic")

    public String olearnTopic() {

    return "olearn/olearn_topic";
}

//此写法是带参数的访问页面地址

@Controller

    @RequestMapping(value = "")
    public ModelAndView index(HttpServletRequest request,String cardNo) {
            ModelAndView mav = new ModelAndView("upgradeTip");
            return mav;
    }