JavaWeb_Session实现简易购物车

来源：互联网发布：centos分辨率设置编辑：程序博客网时间：2024/05/21 17:26

效果图如下:
这里写图片描述

实现方法如下:

具体代码如下:
step-1.jsp

<%@ 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>step-1</title></head><body>    <h2>step-1: 选择要购买的图书</h2>    <form action="<%=request.getContextPath() %>/processStep1" method="post">        <table border="1" cellpadding="10" cellspacing="0">            <tr>                <td>书名</td>                <td>购买</td>            </tr>            <tr>                <td>Java</td>                <td><input type="checkbox" name="book" value="Java"/></td>            </tr>            <tr>                <td>Oracle</td>                <td><input type="checkbox" name="book" value="Oracle"/></td>            </tr>            <tr>                <td>Structs</td>                <td><input type="checkbox" name="book" value="Structs"/></td>            </tr>            <tr>                <td colspan="2">                    <input type="submit"  value="Submits"/>                </td>            </tr>        </table>    </form></body></html>

step-2.jsp

<%@ 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>step-2</title></head><body>    <h2>Step-2: 请输入寄送地址和信用卡信息</h2>    <form action="<%=request.getContextPath() %>/processStep2" method="post">        <table cellpadding="10" cellspacing="0" border="1">        <tr>            <td colspan="2">寄送地址</td>        </tr>        <tr>            <td>姓名</td>            <td><input type="text" name="name"/></td>        </tr>        <tr>            <td>寄送地址</td>            <td><input type="text" name="address"/></td>        </tr>        <tr>            <td colspan="2">信用卡信息</td>        </tr>        <tr>            <td>种类</td>            <td>                <input type="radio" name="cardType" value="Visa"/>Visa                <input type="radio" name="cardType" value="Master"/>Master            </td>        </tr>        <tr>            <td>卡号</td>            <td>                <input type="text" name="card"/>            </td>        </tr>        <tr>            <td colspan="2"><input type="submit" value="提交"/></td>        </tr>    </table>    </form></body></html>

confirm.jsp

<%@page import="com.chance.javaweb.Customer"%><%@ 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>    <%        Customer customer = (Customer)session.getAttribute("customer");        String [] books = (String [])session.getAttribute("books");    %>    <table border="1" cellpadding="10" cellspacing="0">        <tr>            <td>顾客姓名:</td>            <td><%=customer.getName() %></td>        </tr>        <tr>            <td>地址:</td>            <td><%=customer.getAddress() %></td>        </tr>        <tr>            <td>卡的种类:</td>            <td><%=customer.getCardType() %></td>        </tr>        <tr>            <td>卡号:</td>            <td><%=customer.getCard() %></td>        </tr>        <tr>            <td>Books:</td>            <td>                <%                    for(String book:books){                        out.print(book);                        out.print("<br>");                    }                %>            </td>        </tr>    </table></body></html>

Customer.java

package com.chance.javaweb;public class Customer {    private String name;    private String address;    private String cardType;    private String card;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getAddress() {        return address;    }    public void setAddress(String address) {        this.address = address;    }    public String getCardType() {        return cardType;    }    public void setCardType(String cardType) {        this.cardType = cardType;    }    public String getCard() {        return card;    }    public void setCard(String card) {        this.card = card;    }    public Customer(String name, String address, String cardType, String card) {        super();        this.name = name;        this.address = address;        this.cardType = cardType;        this.card = card;    }    public Customer() {    }}

ProcessStep1Servlet.java

package com.chance.javaweb;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Servlet implementation class ProcessStep1Servlet */@WebServlet({ "/ProcessStep1Servlet", "/processStep1" })public class ProcessStep1Servlet extends HttpServlet {    private static final long serialVersionUID = 1L;    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        //1.获取选中的图书信息        String [] books = request.getParameterValues("book");        //2.把图书信息放入到httpsession中        request.getSession().setAttribute("books", books);        //3.重定向到shoppingcar/step-2.jsp        System.out.println(request.getContextPath() + "/shoppingcar/step-2.jsp");        response.sendRedirect(request.getContextPath() + "/shoppingcar/step-2.jsp");    }}

ProcessStep2Servlet.java

package com.chance.javaweb;import java.io.IOException;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;public class ProcessStep2Servlet extends HttpServlet {    private static final long serialVersionUID = 1L;    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        //1.获取请求参数name address cardType card        String name = request.getParameter("name");        String address = request.getParameter("address");        String cardType = request.getParameter("cardType");        String card = request.getParameter("card");        Customer customer = new Customer(name, address, cardType, card);        //2.把请求信息存入到httpsession中        HttpSession session = request.getSession();        session.setAttribute("customer", customer);        //3.重定向到confirm.jsp页面        response.sendRedirect(request.getContextPath() + "/shoppingcar/confirm.jsp");    }}

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