cookie存取：

 存： Cookie cookie = new Cookie("title",URLEncoder.encode("标题","utf-8"))

          cookie.setMaxAge(365 * 24 * 60 * 60);

           response.addCookie(cookie);

 取： Cookie[] cookies = request.getCookies();

          Cookie sCookie = null;

          String cookievalue="";

          for(int i = 0; i < cookies.length; i++){

                 sCookie = cookies[i];

                 if(sCookie.getName()!=null&&sCookie.getName().equals("title"))

                           cookievalues=URLDecoder.decode(sCookie.getValue(),"utf-8");

          }