Day 11-02 Session

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一.简易购物车

1.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>Insert title here</title></head><body><h1>选择购买的图书</h1><form action="<%=request.getContextPath() %>/processStep1" method="post"><table border="1" width="300px"><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>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>JS</td><td><input type="checkbox" name="book" value="JS"></td></tr><tr><td>Andried</td><td><input type="checkbox" name="book" value="Andried"></td></tr><tr><td>PHP</td><td><input type="checkbox" name="book" value="PHP"></td></tr><tr><td><input type="submit" vaiue="submit"></td></tr></table></form></body></html>

2.ProcessStep1Servlet.java

package com.atgugu.shopping;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;@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");// 得到一组数据//2.把取到的放在Session里面request.getSession().setAttribute("book's", books);//3.重定向到shoppingcart/step-2.jspresponse.sendRedirect(request.getContextPath()+"/shoppingcart/step-2.jsp");//相对路径}}

3.Customer.java

package com.atgugu.shopping;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() {super();}}

4.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>Insert title here</title></head><body><h1>Step2：请输入信息</h1><form action="<%=request.getContextPath()%>/processStep2" method="post"><table cellpadding="10" cellspacing="0" border="1"><tr><td colspan="2">寄送信息</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>

5.ProcessStep2Servlet.java

package com.atgugu.shopping;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;@WebServlet({ "/ProcessStep2Servlet", "/processStep2" })public class ProcessStep2Servlet extends HttpServlet {protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//1.获取请求参数：name,address,cardType,cardString 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Session 中HttpSession session=request.getSession();session.setAttribute("customer", customer);//3.重定向页面到confir.jspresponse.sendRedirect(request.getContextPath()+"/shoppingcart/confirm.jsp");}}

6.confirm.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>    <%@ page import="com.atgugu.shopping.Customer" %><!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 h2ere</title></head><body><%Customer customer=(Customer)request.getAttribute("customer");String [] books=(String[])session.getAttribute("books");%><table><tr><td>顾客姓名</td><td><%=customer.getName() %></td></tr><tr><td>地址</td><td><%=customer.getAddress() %></td></tr><tr><td>卡类型</td><td><%=customer.getCardType()%></td></tr><tr><td>Books</td><td><%   for(String book:books){  out.print(book);  out.print("<br>");  }  %></td></tr></table></body></html>

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