直接上代碼犀变，如下

package com.hu.flyCloud.util.cookie;

import org.springframework.util.StringUtils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CookieUtil {


    /**
     * 在request對象中獲取指定Cookie
     *
     * @param request    request對象
     * @param cookieName Cookie名稱
     * @return 查找到的Cookie對象
     */
    public static Cookie getCookie(HttpServletRequest request, String cookieName) {
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie != null && cookieName.equals(cookie.getName())) {
                    return cookie;
                }
            }
        }
        return null;
    }


    /**
     * 添加cookie
     *
     * @param response response
     * @param name     Cookie名稱
     * @param value    Cookie值
     * @param path     Cookie寫入路徑
     * @param domain   Cookie的作用域
     * @param timeout  Cookie有效期 (秒)
     */
    public static void addCookie(HttpServletResponse response, String name, String value, String path, String domain, int timeout) {
        Cookie cookie = new Cookie(name, value);
        if (StringUtils.isEmpty(path) == true) {
            path = "/";
        }
        if (StringUtils.isEmpty(domain) == false) {
            cookie.setDomain(domain);
        }
        cookie.setPath(path);
        cookie.setMaxAge(timeout);
        response.addCookie(cookie);
    }


    /**
     * 刪除Cookie
     *
     * @param request  request對象
     * @param response response對象
     * @param name     Cookie名稱
     */
    public static void delCookie(HttpServletRequest request, HttpServletResponse response, String name) {
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie != null && (name).equals(cookie.getName())) {
                    addCookie(response, name, null, null, null, 0);
                    return;
                }
            }
        }
    }


    /**
     * 修改cookie的value值
     *
     * @param request  request對象
     * @param response response對象
     * @param name     Cookie名稱
     * @param value    Cookie值
     */
    public static void updateCookie(HttpServletRequest request, HttpServletResponse response, String name,
                                    String value) {
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if (cookie != null && (name).equals(cookie.getName())) {
                    addCookie(response, name, value, cookie.getPath(), cookie.getDomain(), cookie.getMaxAge());
                    return;
                }
            }
        }
    }

}