step1.jsp
<%--
Created by IntelliJ IDEA.
User: dell
Date: 2019/7/10
Time: 16:59
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h4>Step1:选择要购买的书籍</h4>
<form action="<%=request.getContextPath()%>/Step1Servlet" method="post">
<table border="1">
<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>Strust</td>
<td><input type="checkbox" name="book" value="Strust"></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit">
</td>
</tr>
</table>
</form>
</body>
</html>
step1.jsp效果图：
Step1Servlet
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class Step1Servlet extends HttpServlet {
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//1.获取选中的图书的信息
String [] books = req.getParameterValues("book");
//2.把图书信息放入到HttpSession中
req.getSession().setAttribute("books",books);
//3.重定向页面到shopcart/step2.jsp
resp.sendRedirect(req.getContextPath() + "/shopcart/step2.jsp");
}
}
Step2.jsp
<%--
Created by IntelliJ IDEA.
User: dell
Date: 2019/7/10
Time: 17:03
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h4>Step2:请输入寄送地址与信用卡信息</h4>
<form action="<%=request.getContextPath()%>/Step2Servlet" method="post">
<table cellpadding="10" cellspacing="0" border="1">
<tr>
<td colspan="2">寄送信息</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="Submit"></td>
</tr>
</table>
</form>
</body>
</html>
step2.jsp效果图
Step2Servlet
import com.demo.javaweb.Customer;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
public class Step2Servlet extends HttpServlet {
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//1.获取请求参数
String address = req.getParameter("address");
byte [] bytes1 = address.getBytes("ISO8859-1");
address = new String(bytes1,"UTF-8");
String name = req.getParameter("name");
byte [] bytes2 = name.getBytes("ISO8859-1");
name = new String(bytes2,"UTF-8");
Customer customer = new Customer();
customer.setName(name);
customer.setAddress(address);
customer.setCardType(req.getParameter("cardType"));
customer.setCard(req.getParameter("card"));
HttpSession session = req.getSession();
System.out.println(customer);
session.setAttribute("customer",customer);
resp.sendRedirect(req.getContextPath()+"/shopcart/submit.jsp");
}
}
submit.jsp
<%--
Created by IntelliJ IDEA.
User: dell
Date: 2019/7/10
Time: 17:12
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" import="com.demo.javaweb.Customer" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<%
Customer customer = (Customer) session.getAttribute("customer");
String[] books = (String[]) session.getAttribute("books");
%>
<table cellspacing="0" cellpadding="10" border="1">
<tr>
<td>顾客姓名：</td>
<td><%= customer.getName()%></td>
</tr>
<tr>
<td>顾客地址：</td>
<td><%= customer.getAddress()%></td>
</tr>
<tr>
<td>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>
submit.jsp效果图
层级关系：
