Study/WebServer
[웹 쇼핑몰 실습] 장바구니 페이지 만들기
Gyuri
2021. 8. 22. 23:46
세션 이용해 장바구니 페이지 만들기
상품 상세 정보 페이지 수정
products.jsp 파일에 추가 작성
<script type="text/javascript">
function addToCart() {
if(confirm("상품을 장바구니에 추가하시겠습니까?")) {
document.addForm.submit();
}
else {
document.addForm.reset();
}
}
</script>
<form name="addForm" action="./addCart.jsp?id=<%=product.getProductId() %>" method="post">
<p><a href="#" class="btn btn-info" onclick="addToCart()"> 상품 주문 »</a>
<a href="./cart.jsp" class="btn btn-warning">장바구니 »</a>
</form>
장바구니에 등록하는 페이지 작성
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"%>
<%
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("exeptionNoProductId.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);
%>
장바구니 페이지 작성
cart.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@page import="java.util.ArrayList" %>
<%@page import="ch12.Product"%>
<%@page import="ch12.ProductRepository"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<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 출력
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"> « 쇼핑 계속하기</a>
</div>
<hr>
</div>
<jsp:include page="footer.jsp"/>
</body>
</html>
장바구니에 등록된 개별 상품 삭제 페이지 작성
removeCart.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@page import="java.util.ArrayList" %>
<%@page import="ch12.Product"%>
<%@page import="ch12.ProductRepository"%>
// 장바구니에 등록된 개별 상품 삭제 페이지
<%
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");
%>
장바구니에 등록된 전체 상품 삭제 페이지 작성
deleteCart.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@page import="ch12.Product"%>
<%@page import="ch12.ProductRepository"%>
<%
String id = request.getParameter("cartId");
if(id==null || id.trim().equals("")) {
response.sendRedirect("cart.jsp");
return;
}
session.invalidate();
response.sendRedirect("cart.jsp");
%>
실행결과 (아무 상품도 안 넣은 상태)