JAVA Cookie 读写工具类

港控/mmm° 2023-07-08 09:06 11阅读 0赞

CookieUtil：

public class CookieUtil {
    
        // 默认缓存时间,单位/秒, 2H
        private static final int COOKIE_MAX_AGE = 60 * 60 * 2;
        // 保存路径,根路径
        private static final String COOKIE_PATH = "/";
    
        /**
         * 保存
         *
         * @param response
         * @param key
         * @param value
         * @param ifRemember
         */
        public static void set(HttpServletResponse response, String key, String value, boolean ifRemember) {
            int age = ifRemember?COOKIE_MAX_AGE:-1;
            set(response, key, value, null, COOKIE_PATH, age, true);
        }
    
        /**
         * 保存
         *
         * @param response
         * @param key
         * @param value
         * @param maxAge
         */
        private static void set(HttpServletResponse response, String key, String value, String domain, String path, int maxAge, boolean isHttpOnly) {
            Cookie cookie = new Cookie(key, value);
            if (domain != null) {
                cookie.setDomain(domain);
            }
            cookie.setPath(path);
            cookie.setMaxAge(maxAge);
            cookie.setHttpOnly(isHttpOnly);
            response.addCookie(cookie);
        }
    
        /**
         * 查询value
         *
         * @param request
         * @param key
         * @return
         */
        public static String getValue(HttpServletRequest request, String key) {
            Cookie cookie = get(request, key);
            if (cookie != null) {
                return cookie.getValue();
            }
            return null;
        }
    
        /**
         * 查询Cookie
         *
         * @param request
         * @param key
         */
        private static Cookie get(HttpServletRequest request, String key) {
            Cookie[] arr_cookie = request.getCookies();
            if (arr_cookie != null && arr_cookie.length > 0) {
                for (Cookie cookie : arr_cookie) {
                    if (cookie.getName().equals(key)) {
                        return cookie;
                    }
                }
            }
            return null;
        }
    
        /**
         * 删除Cookie
         *
         * @param request
         * @param response
         * @param key
         */
        public static void remove(HttpServletRequest request, HttpServletResponse response, String key) {
            Cookie cookie = get(request, key);
            if (cookie != null) {
                set(response, key, "", null, COOKIE_PATH, 0, true);
            }
        }
    
    }