模拟淘宝购物,运用cookie,记录登录账号信息,并且记住购物车内所选的商品
Posted 熊猫卡洛斯
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1、登录界面
<%@ 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> <% String name=""; //获取所有cookie Cookie[] ck=request.getCookies(); if(ck!=null) { //遍历 for(Cookie co:ck) { if(co.getName().equals("name")) { name=co.getValue(); } } } %> 请登录购物账号 <form action="Test.jsp" method="post"> 账户:<input type="text" name="name" value="<%=name %>"> 密码:<input type="password" name="password"> <input type="submit" value="点击登录"> </form> </body> </html>
2,验证登录
<%@ 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> <% response.setHeader("Cache-Control", "no-cache"); String name= request.getParameter("name"); String password=request.getParameter("password"); if(name == null || password == null || name.equals("") || password.equals("")) { out.write("请正确登录!"); response.setHeader("refresh", "2;url=Denglu.jsp"); } else{ //验证 if(name.equals("1234")&&password.equals("123456")) { //用cookie记住账号 //创建cookie Cookie coo=new Cookie("name",name); coo.setMaxAge(20*24*3600); response.addCookie(coo); //保持登录状态 //创建session session.setAttribute("name", name); session.setMaxInactiveInterval(20*60); response.sendRedirect("Gouwuche.jsp"); } else { out.write("用户名或密码错误"); } } %> </body> </html>
3.购物界面
<%@page import="java.net.URLEncoder"%> <%@ 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> 淘宝首页 <br> <% Object obj=session.getAttribute("name"); if(obj==null) { out.write("回话超时或未登录"); response.setHeader("refresh", "2;url=Denglu.jsp"); } else { out.write(obj+",欢迎登录"); } %> <form action="Daoru.jsp" method="post"> 请输入您想要购买的商品名称:<input type="text" name="namesp" /><br/> <input type="submit" value="加入购物车" /><br/> </form> <br> <a href="logout.jsp">退出</a> </body> </html>
4.退出界面
<%@ 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> <% //销毁session session.invalidate(); out.print("退出成功"); response.setHeader("refresh", "2;url=Denglu.jsp"); %> </body> </html>
5.创建cookie商品
<%@page import="java.net.URLEncoder"%> <%@ 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> <% String namesp=request.getParameter("namesp"); namesp=new String(namesp.getBytes("ISO-8859-1"),"UTF-8"); //设置cookie Cookie coo = new Cookie("namesp", URLEncoder.encode(namesp) );//利用cookie记住购物车内的物品 //设置cookie的生命周期为10分钟 coo.setMaxAge(600); //发送cookie response.addCookie(coo); //跳转页面到菜单选择 response.sendRedirect("ShangPin.jsp"); %> </body> </html>
6.购物车内商品
<%@page import="java.net.URLDecoder"%> <%@ 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> <% Object obj=session.getAttribute("name"); if(obj!=null) { Cookie[] ck=request.getCookies(); if(ck!=null) { for(int i =0 ;i<ck.length;i++){ if(ck[i].getName().equals("namesp")){ out.print(ck[i].getName() + "= " + URLDecoder.decode(ck[i].getValue()) + "<br/>"); } } } else { out.write("购物车没有商品") ; } } else { out.write("未登录"); } %> <a href="Gouwuche.jsp">返回进行购物</a> </body> </html>
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