Controller的跳转

1. Controller的跳转默认是请求转发
2. 要进行重定向跳转用redirect开头就行，这样不会经过视图解析器，如return “redirect:/index.jsp”

       @RequestMapping("login")

       public ModelAndView login(User user,ModelAndView mv,HttpSession session) {

              System.out.println(user);

              mv.setViewName("redirect:/login.jsp");//重定向：需要写完整绝对路径

              mv.addObject("name",user.getName());

              session.setAttribute("password", user.getPassword());

              return mv;

       }