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[쉽게 배우는 JSP 웹 프로그래밍] 13장 웹 쇼핑몰 예제 코드 본문

IT/쉽게 배우는 JSP 웹 프로그래밍

[쉽게 배우는 JSP 웹 프로그래밍] 13장 웹 쇼핑몰 예제 코드

yuullog 2022. 12. 6. 21:46
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WebMarket/src/dto/Product.java

package dto;

import java.io.Serializable;

public class Product implements Serializable {
	
	
	private static final long serialVersionUID = 1L;
	private String productId; // 상품 아이디
	private String pname;  // 상품명
	private Integer unitPrice;  // 상품 가격
	private String description;   // 상품 설명
	private String manufacturer; // 제조사
	private String category; // 분류
	private long unitsInStock;  // 재고 수
	private String condition;  // 신상품 or 중고품 or 재생품
	private String filename; // 이미지 파일명
	private int quantity;  // 장바구니에 담은 개수
	
	public Product() {
		super();
	}
	
	public Product(String productId, String pname, Integer unitPrice) {
		this.productId = productId;
		this.pname = pname;
		this.unitPrice = unitPrice;
	}

	public String getProductId() {
		return productId;
	}

	public void setProductId(String productId) {
		this.productId = productId;
	}

	public String getPname() {
		return pname;
	}

	public void setPname(String pname) {
		this.pname = pname;
	}

	public Integer getUnitPrice() {
		return unitPrice;
	}

	public void setUnitPrice(Integer unitPrice) {
		this.unitPrice = unitPrice;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}

	public String getManufacturer() {
		return manufacturer;
	}

	public void setManufacturer(String manufacturer) {
		this.manufacturer = manufacturer;
	}

	public String getCategory() {
		return category;
	}

	public void setCategory(String category) {
		this.category = category;
	}

	public long getUnitsInStock() {
		return unitsInStock;
	}

	public void setUnitsInStock(long unitsInStock) {
		this.unitsInStock = unitsInStock;
	}

	public String getCondition() {
		return condition;
	}

	public void setCondition(String condition) {
		this.condition = condition;
	}
	
	public String getFilename() {
		return filename;
	}
	
	public void setFilename(String filename) {
		this.filename = filename;
	}
	
	public int getQuantity() {
		return quantity;
	}
	
	public void setQuantity(int quantity) {
		this.quantity = quantity;
	}

	

}

 

WebMarket/WebContent/product.jsp

<%@ page contentType="text/html; charset=utf-8"%>
<%@ page import="dto.Product" %>
<%@ page import="dao.ProductRepository" %>
<%@ page errorPage="exceptionNoProductId.jsp" %>
<jsp:useBean id="productDAO" class="dao.ProductRepository" scope="session" />
<html>
<head>
<link rel = "stylesheet" href="./resources/css/bootstrap.min.css" />
<title>상품 상세 정보</title>
<script type="text/javascript">
	function addToCart() {
		if (confirm("상품을 장바구니에 추가하시겠습니까?")) {
			document.addForm.submit();
		} else {
			document.addForm.reset();
		}
	}
</script>
</head>
<body>
	<jsp:include page="menu.jsp" />
	<div class="jumbotron">
		<div class="container">
			<h1 class="display-3">상품 정보</h1>
		</div>
	</div>
	
	<%
		String id = request.getParameter("id");
		ProductRepository dao = ProductRepository.getInstance();
		Product product = dao.getProductById(id);
	%>
	<div class="container">
		<div class="row">
			<div class="col-md-5">
				<img src="./resources/images/<%=product.getFilename() %>" style="width: 100%">
			</div>
			<div class="col-md-6">
				<h3><%=product.getPname() %></h3>
				<p><%=product.getDescription() %>
				<p> <b>상품 코드 : </b><span class="badge badge-danger"><%=product.getProductId() %></span>
				<p> <b>제조사</b> : <%=product.getManufacturer() %>
				<p> <b>분류</b> : <%=product.getCategory() %>
				<p> <b>재고 수</b> : <%=product.getUnitsInStock() %>
				<h4><%=product.getUnitPrice() %>원</h4>
				<p> <form name="addForm" action="./addCart.jsp?id=<%=product.getProductId() %>" method="post">
				<a href="#" class="btn btn-info" onclick="addToCart()"> 상품 주문 &raquo;</a>
				<a href="./cart.jsp" class="btn btn-warning"> 장바구니 &raquo;</a>
				<a href="./products.jsp" class="btn btn-secondary">상품 목록 &raquo;</a>				
				</form>
				
			</div>
		
		</div>
		<hr>
	</div>
	
	<jsp:include page="footer.jsp"/>
</body>
</html>

 

WebMarket/WebContent/addCart.jsp

<%@ page contentType="text/html; charset=utf-8"%>
<%@ page import="java.util.ArrayList" %>
<%@ page import="dto.Product" %>
<%@ page import="dao.ProductRepository" %>

<%
	String id = request.getParameter("id");
	if (id == null || id.trim().equals("")) {
		response.sendRedirect("products.jsp");
		return;
	}
	
	ProductRepository dao = ProductRepository.getInstance();
	
	Product product = dao.getProductById(id);
	if (product == null) {
		response.sendRedirect("exceptionNoProductId.jsp");
	}
	
	ArrayList<Product> goodsList = dao.getAllProducts();
	Product goods = new Product();
	for (int i=0; i<goodsList.size(); i++) {
		goods = goodsList.get(i);
		if (goods.getProductId().equals(id)) {
			break;
		}
	}
	
	ArrayList<Product> list = (ArrayList<Product>) session.getAttribute("cartlist");
	if (list == null) {
		list = new ArrayList<Product>();
		session.setAttribute("cartlist", list);
	}
	
	int cnt = 0;
	Product goodsQnt = new Product();
	for(int i=0; i<list.size(); i++) {
		goodsQnt = list.get(i);
		if (goodsQnt.getProductId().equals(id)) {
			cnt++;
			int orderQuantity = goodsQnt.getQuantity() + 1;
			goodsQnt.setQuantity(orderQuantity);
		}
	}
	
	if (cnt == 0) {
		goods.setQuantity(1);
		list.add(goods);
	}
	
	response.sendRedirect("product.jsp?id=" + id);
	
%>

 

WebMarket/WebContent/cart.jsp

<%@ page contentType="text/html; charset=utf-8"%>
<%@ page import="java.util.ArrayList" %>
<%@ page import="dto.Product" %>
<%@ page import="dao.ProductRepository" %>
<html>
<head>
<link rel = "stylesheet" href="./resources/css/bootstrap.min.css" />
<%
	String cartId = session.getId();
%>
<title>장바구니</title>
</head>
<body>
	<jsp:include page="menu.jsp" />
	<div class="jumbotron">
		<div class="container">
			<h1 class="display-3">장바구니</h1>
		</div>
	</div>
	<div class="container">
		<div class="row">
			<table width="100%">
				<tr>
					<td align="left"><a href="./deleteCart.jsp?cartId=<%=cartId %>" class="btn btn-danger">삭제하기</a></td>
					<td align="right"><a href="#" class="btn btn-success">주문하기</a></td>
				</tr>
			</table>
		</div>
		<div style="padding-top: 50px">
			<table class="table table-hover">
				<tr>
					<th>상품</th>
					<th>가격</th>
					<th>수량</th>
					<th>소계</th>
					<th>비고</th>
				</tr>
				<%
					int sum = 0;
					ArrayList<Product> cartList = (ArrayList<Product>)session.getAttribute("cartlist");
					if (cartList == null)
						cartList = new ArrayList<Product>();
					
					for (int i=0; i<cartList.size(); i++) {  // 상품 리스트 하나씩 출력하기
						Product product = cartList.get(i);
					int total = product.getUnitPrice() * product.getQuantity();
					sum = sum + total;
				%>
				<tr>
					<td><%=product.getProductId()%> - <%=product.getPname()%></td>
					<td><%=product.getUnitPrice() %></td>
					<td><%=product.getQuantity() %></td>
					<td><%=total%></td>
					<td><a href="./removeCart.jsp?id=<%=product.getProductId()%>" class="badge badge-danger">삭제</a></td>
				</tr>
				<%
					}
				%>
				<tr>
					<th></th>
					<th></th>
					<th>총액</th>
					<th><%=sum %></th>
					<th></th>
				</tr>
			</table>
			<a href="./products.jsp" class="btn btn-secondary"> &laquo; 쇼핑 계속하기</a>
		</div>
		<hr>
	</div>
	<jsp:include page="footer.jsp" />
</body>
</html>

 

WebMarket/WebContent/removeCart.jsp

<%@ page contentType="text/html; charset=utf-8"%>
<%@ page import="java.util.ArrayList" %>
<%@ page import="dto.Product" %>
<%@ page import="dao.ProductRepository" %>

<%
	String id = request.getParameter("id");
	if (id == null || id.trim().equals("")) {
		response.sendRedirect("products.jsp");
		return;
	}
	
	ProductRepository dao = ProductRepository.getInstance();
	
	Product product = dao.getProductById(id);
	if (product == null) {
		response.sendRedirect("exceptionNoProductId.jsp");
	}
	
	ArrayList<Product> cartList = (ArrayList<Product>) session.getAttribute("cartlist");
	Product goodsQnt = new Product();
	for (int i=0; i<cartList.size(); i++) {
		goodsQnt = cartList.get(i);
		if (goodsQnt.getProductId().equals(id)) {
			cartList.remove(goodsQnt);
		}
	}
	
	response.sendRedirect("cart.jsp");
%>

 

WebMarket/WebContent/deleteCart.jsp

<%@ page contentType="text/html; charset=utf-8"%>
<%@ page import="dto.Product" %>
<%@ page import="dao.ProductRepository" %>

<%
	String id = request.getParameter("cartId");
	if (id == null || id.trim().equals("")) {
		response.sendRedirect("cart.jsp");
		return;
	}
	
	session.invalidate();
	
	response.sendRedirect("cart.jsp");
%>
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