1、ModelAndView
// 跳转到登录界面
@RequestMapping("toLogin")
public ModelAndView toLogin() {
ModelAndView mv = new ModelAndView("/login/login");
mv.addObject("ls", "数据");
return mv;
} 2、return
// 点击注销执行的方法
@RequestMapping("tologout")
public String tologout(HttpServletRequest request) {
request.setAttribute("showList", "数据");
return "/login/login";
}