- 장바구니 생성
📌 CartController.java 생성
package controller;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import logic.Cart;
import logic.Item;
import logic.ItemSet;
import logic.ShopService;
@Controller
@RequestMapping("cart")
public class CartController {
@Autowired
private ShopService service;
//http://localhost:8088/springmvc1/cart/cartAdd?id=1&quantity=1
@RequestMapping("cartAdd")
public ModelAndView add(Integer id, Integer quantity, HttpSession session) {
ModelAndView mav = new ModelAndView("cart/cart"); //뷰 이름
Item item = service.getItem(id); //상품 정보를 db에서 읽어 오기
//session의 "CART" 속성에 장바구니 정보를 저장.
Cart cart = (Cart)session.getAttribute("CART");
if(cart == null) {
cart = new Cart();
session.setAttribute("CART", cart); //CART 객체를 속성에 등록
}
//cart의 itemSetList에 추가
cart.push(new ItemSet(item, quantity));
mav.addObject("cart",cart);
mav.addObject("message", item.getName() + ":" + quantity + "개 장바구니 추가");
return mav;
}
}
📌 ItemSet.java 생성
package logic;
public class ItemSet {
private Item item;
private Integer quantity;
public ItemSet(Item item, Integer quantity) {
this.item = item;
this.quantity = quantity;
}
//getter, setter, toString
public Item getItem() {
return item;
}
public void setItem(Item item) {
this.item = item;
}
public Integer getQuantity() {
return quantity;
}
public void setQuantity(Integer quantity) {
this.quantity = quantity;
}
@Override
public String toString() {
return "ItemSet [item=" + item + ", quantity=" + quantity + "]";
}
}
📌 Cart.java 생성
package logic;
import java.util.ArrayList;
import java.util.List;
public class Cart {
private List<ItemSet> itemSetList = new ArrayList<>();
public List<ItemSet> getItemSetList() {
return itemSetList;
}
public void push(ItemSet itemSet) {
itemSetList.add(itemSet); //목록에 추가
}
public int getTotal() { //total get 프로퍼티
int sum = 0;
for(ItemSet is : itemSetList) {
sum += is.getItem().getPrice() * is.getQuantity();
}
return sum;
}
}
📌 cart.jsp 생성
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%-- /springmvc1/src/main/webapp/WEB-INF/view/cart/cart.jsp --%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>장바구니</title>
</head>
<body>
<h2>장바구니</h2>
<table>
<tr><td colspan="4">장바구니 상품목록</td></tr>
<tr><th>상품명</th><th>가격</th><th>수량</th><th>합계</th></tr>
<c:forEach items="${cart.itemSetList}" var="set" varStatus="stat">
<tr><td>${set.item.name}</td>
<td><fmt:formatNumber value="${set.item.price}" pattern="###,###"/></td>
<td><fmt:formatNumber value="${set.quantity}" pattern="###,###"/></td>
<td><fmt:formatNumber value="${set.quantity * set.item.price}" pattern="###,###"/>
<a href="cartDelete?index=${stat.index}">ⓧ</a></td></tr>
</c:forEach>
<tr><td colspan="4" align="right">총 구입 금액 :
<fmt:formatNumber value="${cart.total}" pattern="###,###"/>원</td></tr>
</table>
<br>
${message}
<br>
<a href="../item/list">상품목록</a>
<a href="checkout">주문하기</a>
</body>
</html>- 장바구니 상품 추가
📌 CartController.java 내용 추가
package controller;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import logic.Cart;
import logic.Item;
import logic.ItemSet;
import logic.ShopService;
@Controller
@RequestMapping("cart")
public class CartController {
@Autowired
private ShopService service;
//http://localhost:8088/springmvc1/cart/cartAdd?id=1&quantity=1
@RequestMapping("cartAdd")
public ModelAndView add(Integer id, Integer quantity, HttpSession session) {
ModelAndView mav = new ModelAndView("cart/cart"); //뷰 이름
Item item = service.getItem(id); //상품 정보를 db에서 읽어 오기
//session의 "CART" 속성에 장바구니 정보를 저장.
Cart cart = (Cart)session.getAttribute("CART");
if(cart == null) {
cart = new Cart();
session.setAttribute("CART", cart); //CART 객체를 속성에 등록
}
//cart의 itemSetList에 추가
**//itemSetList 존재하는 상품이 추가 되는 경우 수량만 증가시킴**
cart.push(new ItemSet(item, quantity));
mav.addObject("cart",cart);
mav.addObject("message", item.getName() + ":" + quantity + "개 장바구니 추가");
return mav;
}
}
📌 Cart.java 내용 추가
package logic;
import java.util.ArrayList;
import java.util.List;
public class Cart {
private List<ItemSet> itemSetList = new ArrayList<>();
public List<ItemSet> getItemSetList() {
return itemSetList;
}
public void push(ItemSet itemSet) {
**//itemSet : 추가 될 상품**
**for(ItemSet is : itemSetList) {
//is : 이미 추가 된 상품
if(itemSet.getItem().getId() == is.getItem().getId()) {
is.setQuantity(is.getQuantity() + itemSet.getQuantity());
return;
}**
}
itemSetList.add(itemSet); //목록에 추가
}
public int getTotal() { //total get 프로퍼티
int sum = 0;
for(ItemSet is : itemSetList) {
sum += is.getItem().getPrice() * is.getQuantity();
}
return sum;
}
}
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