Cart 부분

src/main/java/spring_team4/spring_team4/cart/Cart.java

@@ -0,0 +1,25 @@
+package spring_team4.spring_team4.cart;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+import spring_team4.spring_team4.product.Product;
+import spring_team4.spring_team4.user.User;
+
+@Entity
+@Getter
+@Setter
+public class Cart {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long cartId;
+
+    @ManyToOne
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @ManyToOne
+    @JoinColumn(name = "product_id")
+    private Product product;
+}

src/main/java/spring_team4/spring_team4/cart/CartController.java

@@ -0,0 +1,42 @@
+package spring_team4.spring_team4.cart;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.*;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/cart")
+public class CartController {
+
+    @Autowired
+    private CartService cartService;
+
+    @PostMapping
+    public ResponseEntity<String> addToCart(@RequestBody Cart cart) {
+        boolean isAdded = cartService.addProductToCart(cart);
+        if (isAdded) {
+            return ResponseEntity.status(HttpStatus.CREATED).body("Product added to cart.");
+        }
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Failed to add product to cart.");
+    }
+
+    @GetMapping
+    public ResponseEntity<List<Cart>> getCartItems(
+            @RequestParam(required = false) Long productId,
+            @RequestParam(required = false) Long categoryId,
+            @RequestParam(required = false) Long userId) {
+        List<Cart> cartItems = cartService.getCartItems(productId, categoryId, userId);
+        return ResponseEntity.ok(cartItems);
+    }
+
+    @DeleteMapping
+    public ResponseEntity<String> removeFromCart(@RequestBody List<Long> cartIds) {
+        boolean isRemoved = cartService.removeProductsFromCart(cartIds);
+        if (isRemoved) {
+            return ResponseEntity.ok("Products removed from cart.");
+        }
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Failed to remove products from cart.");
+    }
+}

src/main/java/spring_team4/spring_team4/cart/CartRepository.java

@@ -0,0 +1,11 @@
+package spring_team4.spring_team4.cart;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface CartRepository extends JpaRepository<Cart, Long> {
+    List<Cart> findByProductProductId(Long productId);
+    List<Cart> findByProductCategoryId(Long categoryId);
+    List<Cart> findByUserUserId(Long userId);
+}

src/main/java/spring_team4/spring_team4/cart/CartService.java

@@ -0,0 +1,37 @@
+package spring_team4.spring_team4.cart;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class CartService {
+
+    @Autowired
+    private CartRepository cartRepository;
+
+    public boolean addProductToCart(Cart cart) {
+        // 장바구니에 동일한 상품이 이미 있으면 추가하지 않거나, 수량 증가 로직 등을 넣을 수 있음
+        cartRepository.save(cart);
+        return true;
+    }
+
+    public List<Cart> getCartItems(Long productId, Long categoryId, Long userId) {
+        if (productId != null) {
+            return cartRepository.findByProductProductId(productId);
+        }
+        if (categoryId != null) {
+            return cartRepository.findByProductCategoryId(categoryId);
+        }
+        if (userId != null) {
+            return cartRepository.findByUserUserId(userId);
+        }
+        return cartRepository.findAll();
+    }
+
+    public boolean removeProductsFromCart(List<Long> cartIds) {
+        cartRepository.deleteAllByIdInBatch(cartIds);
+        return true;
+    }
+}

src/main/java/spring_team4/spring_team4/cart/dto/CartRequest.java

@@ -0,0 +1,8 @@
+package spring_team4.spring_team4.cart.dto;
+
+public class CartRequest {
+    private Long productId;
+    private String userId;
+
+    // 생성자, getter, setter
+}

src/main/java/spring_team4/spring_team4/cart/dto/CartResponse.java

@@ -0,0 +1,11 @@
+package spring_team4.spring_team4.cart.dto;
+
+public class CartResponse {
+    private Long cartItemId;
+    private String userId;
+    private Long productId;
+    private String productName;
+    private String categoryName;
+
+    // 생성자, getter, setter
+}

src/main/java/spring_team4/spring_team4/product/ProductRepository.java

@@ -1,13 +1,15 @@
 package spring_team4.spring_team4.product;
 
-
 import java.util.List;
 import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
+
+/*order 추가 예정*/
 import spring_team4.spring_team4.category.Category;
 import spring_team4.spring_team4.cart.cartStandard;
 import spring_team4.spring_team4.order.Order;
+
 @Repository
 public interface ProductRepository extends JpaRepository<Product, Long> {
 
@@ -19,3 +21,4 @@ public interface ProductRepository extends JpaRepository<Product, Long> {
 
     // List<Product> findByProductNameContaining(String keyword);*/
 }
+