JAVA Spring Mybatis 退出功能问题

//这个是登录方法是可以用的
@RequestMapping(value = “/login“,method = RequestMethod.POST)
    public String testLogin(HttpServletRequest request,@RequestParam String username, @RequestParam String password) {
     log.info(“执行了testLogin方法！”);
     User user = userService.findUserByName(username);
     if(user!=null){;
     if(user.getPassword().equals(DigestUtils.md5Hex(password))){
     request.getSession().setAttribute(“userId”, user.getId());
     request.getSession().setAttribute(“user”, username);
         return “redirect:” + RequestUtil.retrieveSavedRequest();//跳转至访问页面
     }else{
     log.info(“密码错误”);
         request.getSession().setAttribute(“message”, “用户名密码错误，请重新登录”);
         return “login“;
     }
     }else{
     log.info(“用户名不存在”);
     request.getSession().setAttribute(“message”, “用户名不存在，请重新登录”);
     return “login“;
     }
    }



    @RequestMapping(value = “/loginout”,method = RequestMethod.GET)
public String signOut() {
log.info(“返回首页！”);

//请问退出，比如页面点击了退出按钮超链接到这方法，怎么弄呢？怎么写？

return “login“;
}

@ResponseBody
	@RequestMapping("/logout")
	public String logout(HttpServletRequest request){
		HttpSession session=request.getSession();
		session.setAttribute("user", null);
		return "login";
	}

把session的用户数据清空，再跳回登录页面就好了

也可以remove掉