java本地缓存存储cookieUtil工具类

版权声明：本文为博主原创文章，未经博主允许不得转载，如果你非要转载，那能怎么办呢？ https://blog.csdn.net/ghjzzhg/article/details/80620426

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * Cookie.Util
 */
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);
              }
       }

}