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코딩/JSP

웹 쇼핑몰 : 장바구니 페이지 만들기

ehzim 2023. 12. 18. 21:33

 

 

 

 

dto/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;
	private int quantity;
	
	public String getFilename() {
		return filename;
	}

	public void setFilename(String filename) {
		this.filename = filename;
	}

	public product() {
		super();
		// TODO Auto-generated constructor stub
	}
	
	public product(String productId, String pname, Integer unitprice) {
		super();
		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 static long getSerialversionuid() {
		return serialVersionUID;
	}
	
	public int getQuantity() {
		return quantity;
	}
	public void setQuantity(int quantity) {
		this.quantity = quantity;
	}
		
}

 

 

추가된 부분

private int quantity;
	public int getQuantity() {
		return quantity;
	}
	public void setQuantity(int quantity) {
		this.quantity = quantity;
	}

 

 

 

 

 

 

product.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import = "dto.product" %>
<%@ page import="dao.productrepository" %>
<%@ page errorPage="exceptionnoproductid.jsp" %>
<jsp:useBean id = "productDAO" class="dao.productrepository" scope="session" />
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<meta charset="EUC-KR">
<title>상품 상세 정보</title>
<script type="text/javascript">
	function addtocart(){
		if (confirm("상품을 장바구니에 추가하시겠습니까?")){
			document.addform.submit();
		}
		else{
			document.addform.rest();
		}
	}
</script>
</head>
<body>
	<jsp:include page="menu.jsp"></jsp:include>
	<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);
		//String save = request.getServletContext().getRealPath("./resources/images");
	%>
	<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>
	</div>
	
	<jsp:include page="footer.jsp"></jsp:include>
</body>
</html>

 

추가부분

<script type="text/javascript">
	function addtocart(){
		if (confirm("상품을 장바구니에 추가하시겠습니까?")){
			document.addform.submit();
		}
		else{
			document.addform.rest();
		}
	}
</script>

 

<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>

 

상품 주문을 클릭하면 addcart()로 이동하도록 설정했다.

장바구니 버튼을 클릭하면 cart.jsp 이동하도록 했다.

그리고 form의 action으로 addcart.jsp로 이동하도록 했는데 이동시 id를 파라미터로 가지고 가도록 했다.

 

 

 

 

 

addcart.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.util.ArrayList" %>
<%@ page import="dto.product" %>    
<%@ page import="dao.productrepository" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	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);
%>

</body>
</html>

 

 

cart.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.util.ArrayList" %>
<%@ page import="dto.product" %>
<%@ page import="dao.productrepository" %>    
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<%
	String cartid = session.getId();
%>
<meta charset="UTF-8">
<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++){
						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>

 

removecart.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.util.ArrayList" %>
<%@ page import="dto.product" %>
<%@ page import="dao.productrepository" %>       
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<%
		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");
	%>
</body>
</html>

 

 

deletecart.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="dto.product" %>
<%@ page import="dao.productrepository" %>    
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<%
		String id = request.getParameter("cartid");
		if(id == null || id.trim().equals("")){
			response.sendRedirect("cart.jsp");
			return;
		}
		
		session.invalidate();
		
		response.sendRedirect("cart.jsp");
	%>
</body>
</html>

 

 

결과

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