【Cookie】清除Cookie，退出登录功能实现

清理Cookie

• 新建一个同名的Cookie，value为null，替换掉原有的Cookie

SpringBoot代码展示

@GetMapping("/index")
    public String go_index(
            HttpServletRequest request,
            HttpServletResponse response){
        request.getSession().removeAttribute("user");
        Cookie cookie = new Cookie("token",null);
        cookie.setMaxAge(0);//设置存活时间，“0”即马上消失
        cookie.setPath("/");
        response.addCookie(cookie);
        return "redirect:/";
    }