장바구니 조회

1) 조회 페이지에 전달할 DTO 클래스 생성

package com.shop.dto;

import lombok.Getter;
import lombok.Setter;

@Getter
@Setter
public class CartDetailDto {
    private Long cartItemId;
    private String itemNm;
    private int price;
    private int count;
    private String imgUrl;

    public CartDetailDto(Long cartItemId, String itemNm, int price, int count, String imgUrl) {
        this.cartItemId = cartItemId;
        this.itemNm = itemNm;
        this.price = price;
        this.count = count;
        this.imgUrl = imgUrl;
    }
}

 

2) 인터페이스 생성

package com.shop.repository;

import com.shop.dto.CartDetailDto;
import com.shop.entity.CartItem;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;

import java.util.List;

public interface CartItemRepository extends JpaRepository<CartItem, Long> {
    ...

    @Query("select new com.shop.dto.CartDetailDto(ci.id, i.itemNm, i.price, ci.count, im.imgUrl) " +
            "from CartItem ci, ItemImg im " +
            "join ci.item i " +
            "where ci.cart.id = :cartId and im.item.id = ci.item.id and im.repimgYn = 'Y' " +
            "order by ci.regTime desc")
    List<CartDetailDto> findCartDetailDtoList(Long cartId);
}

 

3) 서비스 구현

package com.shop.service;

import com.shop.dto.CartDetailDto;
import com.shop.dto.CartItemDto;
import com.shop.dto.CartOrderDto;
import com.shop.dto.OrderDto;
import com.shop.entity.*;
import com.shop.repository.CartItemRepository;
import com.shop.repository.CartRepository;
import com.shop.repository.ItemRepository;
import com.shop.repository.MemberRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.thymeleaf.util.StringUtils;

import javax.persistence.EntityNotFoundException;
import java.util.ArrayList;
import java.util.List;

@Service
@RequiredArgsConstructor
@Transactional
public class CartService {
    private final ItemRepository itemRepository;
    private final MemberRepository memberRepository;
    private final CartRepository cartRepository;
    private final CartItemRepository cartItemRepository;
    private final OrderService orderService;

    ...

    @Transactional(readOnly = true)
    public List<CartDetailDto> getCartList(String email){
        List<CartDetailDto> cartDetailDtoList = new ArrayList<>();

        Member member = memberRepository.findByEmail(email);
        Cart cart = cartRepository.findByMemberId(member.getId());
        if(cart == null){
            return cartDetailDtoList;
        }

        cartDetailDtoList = cartItemRepository.findCartDetailDtoList(cart.getId());
        return cartDetailDtoList;
    }    
}

 

4) 컨트롤러 구현

package com.shop.controller;

import com.shop.dto.CartDetailDto;
import com.shop.dto.CartItemDto;
import com.shop.dto.CartOrderDto;
import com.shop.service.CartService;
import lombok.RequiredArgsConstructor;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.security.Principal;
import java.util.List;

@Controller
@RequiredArgsConstructor
public class CartController {
    private final CartService cartService;

    ...

    @GetMapping(value = "/cart")
    public String orderHist(Principal principal, Model model){
        List<CartDetailDto> cartDetailList = cartService.getCartList(principal.getName());
        model.addAttribute("cartItems", cartDetailList);
        return "cart/cartList";
    }    
}

 

5) cartList.html 구현

소스코드 아래링크 참고

https://github.com/gusrl6394/SpringbootShop/blob/master/src/main/resources/templates/cart/cartList.html

 

결과)