工具类_java 操作cookie

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class CookieUtil {
        private static String default_path
             ="/";
        private static int default_age =365*24*3600;
    /**
     *@Function: 添加cookie 可設置時間
     *@Author: zzp
     *@param name
     *@param value
     *@param response
     *@param age
     *@throws UnsupportedEncodingException  void
     *@Date: 2014-2-19
     *@Modifications:
     *@Modifier Name; Date; The Reason for Modifying
     *
     */
        public static void addCookie(String name,String value,
                        HttpServletResponse response,int age) throws UnsupportedEncodingException{
                Cookie cookie =
                    new Cookie(name,URLEncoder.encode(value,"utf-8"));
                cookie.setMaxAge(age);
                cookie.setPath(default_path);
                response.addCookie(cookie);
        }
        /**
         *@Function: 添加cookie 默認時間
         *@Author: zzp
         *@param name
         *@param value
         *@param response
         *@throws UnsupportedEncodingException  void
         *@Date: 2014-2-19
         *@Modifications:
         *@Modifier Name; Date; The Reason for Modifying
         *
         */
        public static void addCookie(String name,String value,HttpServletResponse
                        response) throws UnsupportedEncodingException{
                addCookie(name,value,response,default_age);
        }
        /**
         *@Function: 展示所有cookie
         *@Author: zzp
         *@param name
         *@param request
         *@return
         *@throws UnsupportedEncodingException  String
         *@Date: 2014-2-19
         *@Modifications:
         *@Modifier Name; Date; The Reason for Modifying
         *
         */
        public static String findCookie(String name,HttpServletRequest request)
               throws UnsupportedEncodingException{
                String value = null;
                Cookie[] cookies = request.getCookies();
                if(cookies!=null){
                        for(int i=0;i<cookies.length;i++){
                                Cookie cookie = cookies[i];
                                if(cookie.getName().equals(name)){
                                        value = URLDecoder.decode(cookie.getValue(), "utf-8");
                                }
                        }
                }
                return value;
        }
        /**
         *@Function: 刪除cookie
         *@Author: zzp
         *@param name
         *@param response  void
         *@Date: 2014-2-19
         *@Modifications:
         *@Modifier Name; Date; The Reason for Modifying
         *
         */
        public static void deleteCookie(String name,HttpServletResponse
                        response){
                Cookie cookie = new Cookie(name,"");
                cookie.setMaxAge(0);
                cookie.setPath(default_path);
                response.addCookie(cookie);
        }
}