操作 Cookie 的Java工具类

来源：互联网发布：富远软件编辑：程序博客网时间：2024/05/21 07:02
/** * cn.itcast.bbs.util.CookieUtil * 2014-5-26 * Cookie操作工具类 * gyy */package cn.itcast.bbs.util;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class CookieUtil {private static final int COOKIE_MAX_AGE = 7 * 24 * 3600;public static void removeCookie(HttpServletRequest request,HttpServletResponse response, String name) {if (null == name) {return;}Cookie cookie = getCookie(request, name);if(null != cookie){cookie.setPath("/");cookie.setValue("");cookie.setMaxAge(0);response.addCookie(cookie);}}/** * 根据Cookie名称得到Cookie对象，不存在该对象则返回Null *  * @param request * @param name * @return */public static Cookie getCookie(HttpServletRequest request, String name) {Cookie[] cookies = request.getCookies();if (null == cookies || null == name || name.length() == 0) {return null;}Cookie cookie = null;for (Cookie c : cookies) {if (name.equals(c.getName())) {cookie = c;break;}}return cookie;}/** * 添加一条新的Cookie，默认7天过期时间(单位：秒) *  * @param response * @param name * @param value */public static void setCookie(HttpServletResponse response, String name,String value) {setCookie(response, name, value, COOKIE_MAX_AGE);}/** * 添加一条新的Cookie，可以指定过期时间(单位：秒) *  * @param response * @param name * @param value * @param maxValue */public static void setCookie(HttpServletResponse response, String name,String value, int maxValue) {if (null == name) {return;}if (null == value) {value = "";}Cookie cookie = new Cookie(name, value);cookie.setPath("/");if (maxValue != 0) {cookie.setMaxAge(maxValue);} else {cookie.setMaxAge(COOKIE_MAX_AGE);}response.addCookie(cookie);}}
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