java写cookie

/**
     * 创建cookie
     *
     * @param cookieName保存的cookieKey
     * @param param保存的cookieValue
     * @param time时效(单位：秒)
     * @param response
     */
    public static boolean addCookie(final String cookieName,
            final String param, int time, HttpServletResponse response) {
        try {
            // 创建保存用户的cookie
            Cookie cookiesUser = new Cookie(cookieName, param);
            // 设置访问域
            cookiesUser.setPath("/");
            // 设定自动登录期限为二周
            cookiesUser.setMaxAge(time);
            //
            response.addCookie(cookiesUser);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 清除cookie
     *
     * @param cookieName要清除的cookie名
     * @param response
     * @return
     */
    public static boolean deleteCookie(final String cookieName,
            HttpServletResponse response) {
        try {
            Cookie cookie = new Cookie(cookieName, null);
            cookie.setPath("/");
            // 时效为0时即时删除
            cookie.setMaxAge(0);
            response.addCookie(cookie);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }