Springmvc获取session,session里存取值得方法

 session对象的获取：
 1：最简单当形参注入

  
     @RequestMapping("/main/login")
    public String userLogin(String yhdm,
            HttpSession httpSession, HttpServletRequest request) {
         
        httpSession.setAttribute("clientUser", "a");
        request.getRemodeAddr();
        return "main/framework";
    }
 2：先获取request(通过web.xml配监听，详细在点击打开链接(上一章怎么获取request里))，在通过request获取session


  RequestAttributes ra = RequestContextHolder.getRequestAttributes();
HttpServletRequest request = ((ServletRequestAttributes)ra).getRequest();
request.getSession().setAttribute("sessionMessage", "im'sessionMessage!");





 方法一：使用servlet-api

 @Controller
 public class ManagerController {
   //存
     @Resource
     private ManagerService managerServiceImpl;

     @RequestMapping(value = "manager/login.do",method = RequestMethod.GET)
     public ModelAndView login(ManagerModel managerModel,HttpSession httpSession){

         ManagerModel manager = managerServiceImpl.getManager(managerModel);
         if(manager!=null){
             manager.setPassword("");
             httpSession.setAttribute("manager", manager);
             return new ModelAndView(new RedirectView("../admin/main.jsp"));
         }else{
             return new ModelAndView(new RedirectView("../admin/login.jsp"));
         }
     }
       //取
     @RequestMapping(value = "manager/logout.do",method = RequestMethod.GET)
     public String logout(HttpSession httpSession){
         httpSession.getAttribute("manager");
         return "success";
     }
 }

 方法二：使用SessionAttributes

 @Controller
 @SessionAttributes("manager")
 public class ManagerController {

     @Resource
     private ManagerService managerServiceImpl;
      //存
     @RequestMapping(value = "manager/login.do",method = RequestMethod.GET)
     public ModelAndView login(ManagerModel managerModel,ModelMap model){

         ManagerModel manager = managerServiceImpl.getManager(managerModel);
         if(manager!=null){
             manager.setPassword("");
             model.addAttribute("manager", manager);
             return new ModelAndView(new RedirectView("../admin/main.jsp"));
         }else{
             return new ModelAndView(new RedirectView("../admin/login.jsp"));
         }
     }
      //取
     @RequestMapping(value = "manager/logout.do",method = RequestMethod.GET)
     public String logout(@ModelAttribute("manager")ManagerModel managerModel){
         return "success";
     }
 }