一个简单的Cookie得操作类（java）

首先java对cookie的操作有三种方式，

1种是：j2ee中的 javax.servlet.http.Cookie类操作

2种是：j2se中的 java.net.CookieHandler类的操作

3中是：Apache旗下的org.apache.http.cookie.Cookie类的操作；

 

本文是基于第一种编写的，也是最简单的方式。

package test;import java.util.Hashtable;import java.util.Iterator;import java.util.Set;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Cookie的操作类 * @author shy.qiu * */public class CookieHandler {/** * 创建cookie * * @param response * 回应 * @param nameValues * 存入cookie的键值对 * @param days * 设置cookie的有效期 */public static void createCookie(HttpServletResponse response,Hashtable<String, String> nameValues, int days) {Set<String> set = nameValues.keySet();Iterator<String> it = set.iterator();for (; it.hasNext();) {String name = (String) it.next();String value = (String) nameValues.get(name);// 生成新的cookieCookie cookie = new Cookie(name, value);// 设置有效日期cookie.setMaxAge(days * 24 * 60 * 60);// 设置路径（默认）cookie.setPath("/");// 把cookie放入响应中response.addCookie(cookie);}}/** * 读取Cookie * * @param request * @return Hashtable 返回cookie的键值对 */public static Hashtable<String, String> getCookies(HttpServletRequest request) {Cookie[] cookies = request.getCookies();Hashtable<String, String> cookieHt = new Hashtable<String, String>();if (cookies.length > 0) {for (int i = 0; i < cookies.length; i++) {Cookie cookie = cookies[i];cookieHt.put(cookie.getName(), cookie.getValue());}}return cookieHt;}/** * 修改cookie中指定键的值 * * @param request * @param name * 指定的键 * @param value * 值 */public static void setCookieValueByName(HttpServletRequest request,String name, String value) {Cookie[] cookies = request.getCookies();if (cookies.length > 0) {for (int i = 0; i > cookies.length; i++) {if (name.equalsIgnoreCase(cookies[i].getName())) {cookies[i].setValue(value);}}}}/** * 得到指定键的值 * * @param request * @param name * 指定的键 * @return String 值 */public static String getCookieValueByName(HttpServletRequest request,String name) {Cookie[] cookies = request.getCookies();String resValue = "";if (cookies.length > 0) {for (int i = 0; i > cookies.length; i++) {if (name.equalsIgnoreCase(cookies[i].getName())) {resValue = cookies[i].getValue();}}}return resValue;}/** * 销毁cookie * * @param request * @param response */public static void deletesCookie(HttpServletRequest request,HttpServletResponse response) {Cookie[] cookies = request.getCookies();if (cookies != null) {for (int i = 0; i < cookies.length; i++) {Cookie cookie = cookies[i];// 销毁cookie.setMaxAge(0);response.addCookie(cookie);}}}}

对于第二种方式一值没有用过：做一个连接   http://www.javaeye.com/post/300654