[웹 쇼핑몰 실습] 상품 목록 표시

상품 클래스 만들기

Product.java

package dto;

import java.io.Serializable;

public class Product implements Serializable {

	private static final long serialVersionUID = -4274700572038677000L;

	private String productId;
	private String pname;
	private Integer unitPrice;
	private String description;
	private String manufacturer;
	private String category;
	private long unitsInStock;
	private String condition;
	private String filename; // 이미지 파일 받을 수 있는 변수
	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 String getPname() {
		return pname;
	}

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

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

	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;
	}

}

 

 

자바빈즈로 사용할 상품 데이터 접근 클래스 만들기

ProductRepository.java

package dao;

import java.util.ArrayList;

import dto.Product;

public class ProductRepository {

	private ArrayList<Product> listOfProducts = new ArrayList<Product>();
	private static ProductRepository instance = new ProductRepository(); // 신규 상품 데이터 저장
	
	public static ProductRepository getInstance() {
		return instance;
	}

	public ProductRepository() {
		Product phone = new Product("P1234", "iPhone 11", 800000);
		phone.setDescription("4.7-inch, 1334X750 Renina HD display, 8-megapixel iSight Camera");
		phone.setCategory("Smart Phone");
		phone.setManufacturer("Apple");
		phone.setUnitsInStock(1000);
		phone.setCondition("New");
		phone.setFilename("p1234.png");

		Product notebook = new Product("P1235", "LG PC 그램", 1500000);
		notebook.setDescription("13.3-inch, IPS LED display, 5rd Generation Intel Core processors");
		notebook.setCategory("Notebook");
		notebook.setManufacturer("LG");
		notebook.setUnitsInStock(1000);
		notebook.setCondition("Refurbished");
		notebook.setFilename("p1235.png");

		Product tablet = new Product("P1236", "Galaxy Tab S", 900000);
		tablet.setDescription("212.8*125.6*6.6mm,  Super AMOLED display, Octa-Core processor");
		tablet.setCategory("Tablet");
		tablet.setManufacturer("Samsung");
		tablet.setUnitsInStock(1000);
		tablet.setCondition("Old");
		tablet.setFilename("p1236.png");

		listOfProducts.add(phone);
		listOfProducts.add(notebook);
		listOfProducts.add(tablet);
	}

	public ArrayList<Product> getAllProducts() {
		return listOfProducts;
	}
	
	public Product getProductById(String productId) {  // 상품 상세정보 가져오는 메소드
		Product productById = null;

		for (int i = 0; i < listOfProducts.size(); i++) {
			Product product = listOfProducts.get(i);
			if (product != null && product.getProductId() != null && product.getProductId().equals(productId)) {
				productById = product;
				break;
			}
		}
		return productById;
	}
	
	public void addProduct(Product product) {
		listOfProducts.add(product);
	}
	
}

 

 

상품 목록 표시하기

products.jsp

<%@ page contentType="text/html; charset=utf-8"%>
<%@ page import="java.util.ArrayList"%>
<%@ page import="dto.Product"%>
<jsp:useBean id="productDAO" class="dao.ProductRepository" scope="session" />
<html>
<head>
<link rel="stylesheet" 	
href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<meta charset="UTF-8">
<title>상품 목록</title>
</head>
<body>
	<jsp:include page="menu.jsp" />
	<div class="jumbotron">
		<div class="container">
			<h1 class="display-3">상품 목록</h1>
		</div>
	</div>
	<%
		ArrayList<Product> listOfProducts = productDAO.getAllProducts();
	%>
	<div class="container">
		<div class="row" align="center">
			<%
				for (int i = 0; i < listOfProducts.size(); i++) {
					Product product = listOfProducts.get(i);
			%>
			<div class="col-md-4">
				<h3><%=product.getPname()%></h3>
				<p><%=product.getDescription()%>
				<p><%=product.getUnitPrice()%>원
				<p><a href="./product.jsp?id=<%=product.getProductId()%>" class="btn btn-secondary" role="button"> 상세 정보 &raquo;</a>
			</div>
			<%
				}
			%>
		</div>
		<hr>
	</div>
	<jsp:include page="footer.jsp" />
</body>
</html>

 

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