1.存入

1.1 所需形参

HttpSession session, HttpServletResponse response

1.2 将token存入cookie

token = UUID.randomUUID().toString();
Cookie tokenCookie = new Cookie("token", token);
tokenCookie.setMaxAge(60*60*24);
tokenCookie.setPath("/");
response.addCookie(tokenCookie);

1.3 将token的值为key，登录用户的信息为value存入session

session.setAttribute(token,loginCourier);

2取出

2.1 所需形参

@CookieValue("token") String token

2.2 获取用户信息

Courier courier = (Courier)session.getAttribute(token);