SpringMVC项目：ALL

package controller; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import javax.servlet.Servlet; import javax.servlet.ServletContext; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import java.util.Map; @Controller public class ScopeController { //req域、session域、ServletContest域 //用ServletAPT向req域对象共享数据 @RequestMapping("/testRequestByServletAPI") public String test01(HttpServletRequest req){ req.setAttribute("testRequestScope","hello,ServletAPI"); return "ok";//转发 } //以下是MVC提供的四种 //用ModelAndView向req域对象共享数据 @RequestMapping("/ByModelAndView") public ModelAndView test02(){ ModelAndView mav=new ModelAndView(); mav.addObject("testRequestScope","hello,MAV");//处理模型数据 mav.setViewName("ok");//设置视图名称 return mav; } //Model @RequestMapping("/ByModel") public String test03(Model model){ model.addAttribute("testRequestScope","hello,Model"); return "ok"; } //Map @RequestMapping("/ByMap") public String test04(Map<String,Object> map){ map.put("testRequestScope","hello,Map"); return "ok"; } //ModelMap @RequestMapping("/ByModelMap") public String test05(ModelMap modelMap){ modelMap.addAttribute("testRequestScope","hello,Model11Map"); System.out.println(modelMap.getClass().getName());//后三种的参数本质上都是BindingAwareModelMap类型的 return "ok"; } //向session域共享数据 @RequestMapping("/testSession") public String test06(HttpSession session){ session.setAttribute("testSessionScope","hello,Session"); return "ok"; } //向Application(ServletContext)共享数据 @RequestMapping("/testApplication") public String test07(HttpSession session){ ServletContext application=session.getServletContext(); application.setAttribute("testApplicationScope","hello,Application"); return "ok"; } }