CookieUtils工具类

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.Date;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/*** CookieUtils工具类* @author 蔡龙* @version 2013-01-15*/
public class CookieUtils {/*** 设置 Cookie（生成时间为1天）* @param request 请求对象* @param response 响应对象* @param key 键* @param value 值*/public static void setCookie(HttpServletRequest request,HttpServletResponse response, String key, String value) {setCookie(request, response, key, value, 60*60*24);}/*** 设置 Cookie（生成时间为1天）* @param request 请求对象* @param response 响应对象* @param key 键* @param value 值* @param path 指定路径，一般可指定/,若为null则写入当前页面的URL中取出当前路径*/public static void setCookie(HttpServletRequest request,HttpServletResponse response, String key, String value, String path) {setCookie(request,response, key, value, path, 60*60*24);}/*** 设置 Cookie* @param request 请求对象* @param response 响应对象* @param key 键* @param value 值* @param maxAge 生存时间（单位秒）-1代表关闭浏览器就失效*/public static void setCookie(HttpServletRequest request,HttpServletResponse response, String key, String value, int maxAge) {setCookie(request,response, key, value, "/", maxAge);}/*** 设置 Cookie* @param request 请求对象* @param response 响应对象* @param key 键* @param value 值* @param path 指定路径，一般可指定/,若为null则写入当前页面的URL中取出当前路径* @param maxAge 生存时间（单位秒）*/public static void setCookie(HttpServletRequest request,HttpServletResponse response, String key, String value, String path, int maxAge) {Cookie cookie = new Cookie(key, null);cookie.setPath(path);cookie.setMaxAge(maxAge);cookie.setValue(value);response.addCookie(cookie);}/*** 设置 Cookie （只能通过http访问，javaScript无法访问）* @param request 请求对象* @param response 响应对象* @param key 键* @param value 值* @param path 指定路径，一般可指定/,若为null则写入当前页面的URL中取出当前路径* @param maxAge 生存时间（单位秒）*/public static void setCookieHttpOnly(HttpServletRequest request,HttpServletResponse response, String key, String value, String path, int maxAge) {Date date=new Date();long ms=date.getTime()+(maxAge*1000);date=new Date(ms);response.addHeader("Set-Cookie", key+"=" + (value==null?"":value) + ";Path="+path+"; HttpOnly;Expires="+date.toString());}/*** @param request 请求对象* 获得指定Cookie的值* @param key 键* @return 值*/public static String getCookie(HttpServletRequest request, String key) {return getCookie(request, null, key, false);}/*** 获得指定Cookie的值，并删除。* @param request 请求对象* @param response 响应对象* @param key 键* @return 值*/public static String getCookie(HttpServletRequest request, HttpServletResponse response, String key) {return getCookie(request, response, key, true);}/*** 获得指定Cookie的值* @param request 请求对象* @param response 响应对象* @param key 键* @param isRemove 是否移除* @return 值*/public static String getCookie(HttpServletRequest request, HttpServletResponse response, String key, boolean isRemove) {String value = null;Cookie[] cookies = request.getCookies();if (cookies != null) {for (Cookie cookie : cookies) {if (cookie.getkey().equals(key)) {try {value = URLDecoder.decode(cookie.getValue(), "utf-8");} catch (UnsupportedEncodingException e) {e.printStackTrace();}if (isRemove) {cookie.setMaxAge(0);response.addCookie(cookie);}}}}return value;}
}

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