cookie它是用户访问Web服务器时，服务器在用户硬盘上存放的信息。
1.使用Servlet实现cookie
@WebServlet("/CookieServlet")public class CookieServlet extends HttpServlet {private static final long serialVersionUID = 1L; ???private int count1;private int count2; ???public CookieServlet() { ???????super(); ???}protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {Cookie cookie = new Cookie("cookieName" +count1++, "cookieValue" + ?count2++);cookie.setMaxAge(15);response.addCookie(cookie);Cookie[] cookies = request.getCookies();if (cookies == null) {return;}for(Cookie cook : cookies){System.out.println("cookie name: " +cook.getName());System.out.println("cookie value: " +cook.getValue());}}/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stubdoGet(request, response);}}cookie的设值方法： response.addCookie(cookie)
cookie的取值方法：Cookie[] cookies = request.getCookies();
2. 使用Jsp实现Cookie
<%@ page language="java" contentType="text/html; charset=UTF-8" ???pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><body><%! int count1 = 0;int count2 = 0;%><% Cookie cookie = new Cookie("cookieName"+ count1++, "cookieValue" +count2++); ????cookie.setMaxAge(15); ????response.addCookie(cookie);%><%Cookie[] cookies = request.getCookies();if(null == cookie){return;}for(Cookie c : cookies){%><p><b>cookie name: <%= c.getName() %><b><br><b>cookie value: <%= c.getValue() %></b></p><%}%></body></html>
Jsp Cookie
原文地址：http://www.cnblogs.com/linlf03/p/7691370.html