cookie案例-显示用户上次访问网站的时间

package cn.itcast.cookie;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CookieDemo extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setCharacterEncoding("UF-8");
        response.setContentType("text/html;charset=UTF-8");
        
        PrintWriter out = response.getWriter();
        out.print("您上次访问的时间是:");
        
        //获得用户的时间cookie
        Cookie cookies[] = request.getCookies();
        for(int i=0;cookies!=null&&i<cookies.length;i++){
            if(cookies[i].getName().equals("lastAccessTime")){
                long cookieValue = Long.parseLong(cookies[i].getValue());
                Date date = new Date(cookieValue);
                
                out.print(date.toLocaleString());
                
            }
        }
        
        //给用用户会送最新的访问时间。
        Cookie cookie = new Cookie("lastAccessTime",System.currentTimeMillis()+"");
        cookie.setMaxAge(1*30*24*3600);
        cookie.setPath("/ServletDemo");
        
        response.addCookie(cookie);
        
    }

    
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        
    }

}