COOKIE有关问题 在线啊 急死人了

HttpServletResponse rep = ServletActionContext.getResponse()  ; Cookie nameCookie = new Cookie("loginname",LoginName);                   nameCookie.setMaxAge(60);                                  rep.addCookie(nameCookie);  

HttpServletRequest req=ServletActionContext.getRequest(); Cookie[] cks = req.getCookies();           String loginname="";         for(Cookie ck :cks)         {             if("loginname".equals(ck.getName())){                 loginname=ck.getValue();                  }              System.out.println(ck.getValue());              System.out.println(ck.getName());                  }                     System.out.println(cks.length);                    System.out.println("$$$$$$$$$$$ cookie-- name:" + loginname );             

import java.io.UnsupportedEncodingException;import java.net.URLDecoder;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class CookieUtil {    /**     * 通过cookie name获取一组cookie     * @param request     * @param name     * @return     */    public static Cookie getCookie(HttpServletRequest request, String name) {        Cookie cookies[] = request.getCookies();        if (cookies == null || name == null || name.length() == 0)            return null;        for (int i = 0; i < cookies.length; i++) {            if (name.equals(cookies[i].getName())) {                 //    && request.getServerName().equals(cookies[i].getDomain())) {                return cookies[i];            }        }        return null;    }        /**     * 通过cookie name 读取 value     * @param request     * @param name     * @return     */    public static String readCookie(HttpServletRequest request, String name) {        String value = null;        try {            Cookie cookies[] = request.getCookies();            if (cookies == null || name == null || name.length() == 0)                return null;            for (int i = 0; i < cookies.length; i++) {                if (name.equals(cookies[i].getName())) {                    // && request.getServerName().equals(cookies[i].getDomain())) {                    value = URLDecoder.decode(cookies[i].getValue(), "UTF-8");                    return value;                }            }        } catch (UnsupportedEncodingException e) {            e.printStackTrace();        }        return null;    }        /**     * 删除cookie     * @param request     * @param response     * @param cookie     */    public static void deleteCookie(HttpServletRequest request,            HttpServletResponse response, Cookie cookie) {        if (cookie != null) {            cookie.setPath(getPath(request));            cookie.setValue("");            cookie.setMaxAge(0);            response.addCookie(cookie);        }    }    /**     * 通过cookie name 删除一组cookie     * @param request     * @param response     * @param name     */    public static void deleteCookie(HttpServletRequest request,            HttpServletResponse response, String name) {        deleteCookie(request, response, getCookie(request, name));    }        /**     * 设置新的cookie ，默认时间是0x278d00（一个月）     * @param request     * @param response     * @param name     * @param value     */    public static void setCookie(HttpServletRequest request,            HttpServletResponse response, String name, String value) {        setCookie(request, response, name, value, 0x278d00);    }    /**     * 设置新的cookie，maxAge为默认值，cookie仅仅保存在浏览器进程中     * @param request     * @param response     * @param name     * @param value     * @param maxAge     */    public static void setCookie(HttpServletRequest request,            HttpServletResponse response, String name, String value, int maxAge) {        Cookie cookie = new Cookie(name, value == null ? "" : value);//        cookie.setMaxAge(maxAge);            //设置cookie生命周期，单位秒（365*24*60*60 一年），如果设置为负值的话，则为浏览器进程Cookie(内存中保存)，关闭浏览器就失效。默认为-1        cookie.setPath(getPath(request));    //-设置Cookie适用的路径。如果不指定路径，Cookie将返回给当前页面所在目录及其子目录下的所有页面。                                            //-这里的方法可以用来设定一些更一般的条件。例如，setPath("/")，此时服务器上的所有页面都可以接收到该Cookie。        response.addCookie(cookie);    }    /**     * 私有方法     * 获取项目路径，如/nc_System     * @param request     * @return     */    private static String getPath(HttpServletRequest request) {        String path = request.getContextPath();        return (path == null || path.length() == 0) ? "/" : path;    }}