/**
*
* @param request 可以把原生servlet有的东西写在参数里,response,session等
* @param map 可以存在Map中
* @param model 可以存在model接口对象 中
* @return 跳转到一个jsp页面,因为配置了视图定位,所以只要号index
*/
@RequestMapping("demo13")
public String demo13(HttpServletRequest request,Map<String,String> map,Model model) {
request.setAttribute("request", "requestName");
request.getSession().setAttribute("session", "sessionName");
request.getServletContext().setAttribute("application","applicationName");
//SpringMVC会把map放在request中
map.put("map", "mapName");
model.addAttribute("model","modelName");
return "index";
}
在jsp中用el表达示取出:
<body>
request:${requestScope.request }<br/>
session:${sessionScope.session }<br/>
application:${applicationScope.application }<br/>
map:${requestScope.map }<br/>
model:${requestScope.model }<br/>
</body>
使用ModelAndView类:
@RequestMapping("demo14")
public ModelAndView demo14() {
//new ModeAndVie()的参数代表要进行跳转的路径
ModelAndView mode = new ModelAndView("index");
//存入一条数据。存在request中
mode.addObject("modeAndView","modeAndView");
return mode;
}