CookieUtil工具类

设置cookie

	/**
     * 设置cookie
     * @param response
     * @param name cookie名字
     * @param value cookie值
     * @param maxAge cookie生命周期 以秒为单位
     */
    public static void addCookie(HttpServletResponse response, String name, String value, int maxAge) {
        Cookie cookie = new Cookie(name, value);
        cookie.setPath("/");
        if (maxAge > 0)
            cookie.setMaxAge(maxAge);
        response.addCookie(cookie);
    }

根据名字获取cookie

	/**
     * 根据名字获取cookie
     *
     * @param request
     * @param name cookie名字
     * @return
     */
    public static Cookie getCookieByName(HttpServletRequest request, String name) {
        Map<String, Cookie> cookieMap = ReadCookieMap(request);
        if (cookieMap.containsKey(name)) {
            Cookie cookie = cookieMap.get(name);
            return cookie;
        } else {
            return null;
        }
    }

将cookie封装到Map里面

    /**
     * 将cookie封装到Map里面
     *
     * @param request
     * @return
     */
    private static Map<String, Cookie> ReadCookieMap(HttpServletRequest request) {
        Map<String, Cookie> cookieMap = new HashMap<>();
        Cookie[] cookies = request.getCookies();
        if (null != cookies) {
            for (Cookie cookie : cookies) {
                cookieMap.put(cookie.getName(), cookie);
            }
        }
        return cookieMap;
    }