feat : fileUpload add (MultiPart Form Data)

src/main/java/com/example/demo/application/product/CreateProductService.java

@@ -15,8 +15,8 @@ public CreateProductService(ProductRepository productRepository) {
         this.productRepository = productRepository;
     }
 
-    public Product createProduct(String name, Money price) {
-        Product product = Product.create(name, price);
+    public Product createProduct(String name, String imageUrl, Money price) {
+        Product product = Product.create(name, imageUrl, price);
 
         productRepository.save(product);
 

src/main/java/com/example/demo/controllers/ProductController.java

@@ -5,33 +5,42 @@
 import com.example.demo.dtos.CreateProductDto;
 import com.example.demo.dtos.ProductListDto;
 import com.example.demo.models.Money;
+import com.example.demo.utils.ImageStorage;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.*;
 
+import java.io.IOException;
+
 @RestController
 @RequestMapping("products")
 @CrossOrigin
 public class ProductController {
     private final GetProductListService getProductListService;
     private final CreateProductService createProductService;
+    private final ImageStorage imageStorage;
+
 
     public ProductController(GetProductListService getProductListService,
-                             CreateProductService createProductService) {
+                             CreateProductService createProductService, ImageStorage imageStorage) {
         this.getProductListService = getProductListService;
         this.createProductService = createProductService;
+        this.imageStorage = imageStorage;
     }
 
     @GetMapping
     public ProductListDto list() {
         return getProductListService.getProductListDto();
     }
 
-    @PostMapping
+    @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
     @ResponseStatus(HttpStatus.CREATED)
-    public void create(@RequestBody CreateProductDto dto) {
+    public void create(@ModelAttribute CreateProductDto dto)
+            throws IOException {
         String name = dto.name().strip();
+        String imageUrl = imageStorage.save(dto.image());
         Money price = new Money(dto.price());
 
-        createProductService.createProduct(name, price);
+        createProductService.createProduct(name, imageUrl, price);
     }
 }

src/main/java/com/example/demo/dtos/CreateProductDto.java

@@ -1,7 +1,10 @@
 package com.example.demo.dtos;
 
+import org.springframework.web.multipart.MultipartFile;
+
 public record CreateProductDto(
     String name,
-    Long price
+    Long price,
+    MultipartFile image
 ) {
 }

src/main/java/com/example/demo/dtos/ProductListDto.java

@@ -16,6 +16,7 @@ public List<ProductDto> getProducts() {
     public record ProductDto(
         String id,
         String name,
+        String imageUrl,
         Long price
     ) {
     }

src/main/java/com/example/demo/infrastructure/CartDtoFetcher.java

@@ -20,7 +20,7 @@ public CartDto fetchCartDto(CartId cartId) {
         String sql = """
             SELECT
                 *,
-                products.name AS product_name
+                products.name AS product_name2
             FROM line_items
             JOIN products ON line_items.product_id = products.id
             WHERE line_items.cart_id = ?
@@ -31,7 +31,7 @@ public CartDto fetchCartDto(CartId cartId) {
             sql,
             (ResultSet resultSet, int rowNum) -> new CartDto.LineItemDto(
                 resultSet.getString("id"),
-                resultSet.getString("product_name"),
+                resultSet.getString("product_name2"),
                 resultSet.getLong("unit_price"),
                 resultSet.getInt("quantity"),
                 resultSet.getLong("total_price")

src/main/java/com/example/demo/infrastructure/ProductDtoFetcher.java

@@ -28,6 +28,7 @@ public ProductListDto fetchProductListDto() {
                 new ProductListDto.ProductDto(
                     resultSet.getString("id"),
                     resultSet.getString("name"),
+                    resultSet.getString("image_url"),
                     resultSet.getLong("price")
                 )
         );

src/main/java/com/example/demo/models/Cart.java

@@ -26,7 +26,7 @@ public class Cart {
     @UpdateTimestamp
     private LocalDateTime updatedAt;
 
-    private Cart() {
+    protected Cart() {
     }
 
     public Cart(CartId cartId) {

src/main/java/com/example/demo/models/CartId.java

@@ -7,7 +7,7 @@ public class CartId extends EntityId {
     // TODO: Delete this! (카트가 하나만 존재한다고 가정)
     public static final CartId DEFAULT = new CartId("0BV000000CART");
 
-    private CartId() {
+    protected CartId() {
         super();
     }
 

src/main/java/com/example/demo/models/EntityId.java

@@ -4,17 +4,18 @@
 import jakarta.persistence.Column;
 import jakarta.persistence.MappedSuperclass;
 
+import java.io.Serializable;
 import java.util.Objects;
 
 @MappedSuperclass
-public abstract class EntityId {
+public abstract class EntityId implements Serializable {
     @Column(name = "id")
     private String value;
 
-    protected EntityId() {
+    public EntityId() {
     }
 
-    protected EntityId(String value) {
+    public EntityId(String value) {
         this.value = value;
     }
 

src/main/java/com/example/demo/models/LineItem.java

@@ -33,7 +33,7 @@ public class LineItem {
     @UpdateTimestamp
     private LocalDateTime updatedAt;
 
-    private LineItem() {
+    protected LineItem() {
     }
 
     public LineItem(LineItemId id, Product product, int quantity) {

src/main/java/com/example/demo/models/LineItemId.java

@@ -1,7 +1,10 @@
 package com.example.demo.models;
 
+import jakarta.persistence.Embeddable;
+
+@Embeddable
 public class LineItemId extends EntityId {
-    private LineItemId() {
+    public LineItemId() {
         super();
     }
 

src/main/java/com/example/demo/models/Money.java

@@ -10,7 +10,7 @@ public class Money {
     @Column(name = "money")
     private Long value;
 
-    private Money() {
+    public Money() {
 
     }
 

src/main/java/com/example/demo/models/Product.java

@@ -15,6 +15,9 @@ public class Product {
     @Column(name = "name")
     private String name;
 
+    @Column(name = "image_url")
+    private String imageUrl;
+
     @CreationTimestamp
     private LocalDateTime createdAt;
 
@@ -25,17 +28,18 @@ public class Product {
     @AttributeOverride(name = "value", column = @Column(name = "price"))
     private Money price;
 
-    private Product() {
+    public Product() {
     }
 
-    public Product(ProductId id, String name, Money price) {
+    public Product(ProductId id, String name, String imageUrl, Money price) {
         this.id = id;
         this.name = name;
+        this.imageUrl = imageUrl;
         this.price = price;
     }
 
-    public static Product create(String name, Money price) {
-        return new Product(ProductId.generate(), name, price);
+    public static Product create(String name, String imageUrl, Money price) {
+        return new Product(ProductId.generate(), name, imageUrl, price);
     }
 
     public ProductId id() {
@@ -46,6 +50,9 @@ public String name() {
         return name;
     }
 
+    public String imageUrl() {
+        return imageUrl;
+    }
     public Money price() {
         return price;
     }

src/main/java/com/example/demo/models/ProductId.java

@@ -1,7 +1,10 @@
 package com.example.demo.models;
 
+import jakarta.persistence.Embeddable;
+
+@Embeddable
 public class ProductId extends EntityId {
-    private ProductId() {
+    public ProductId() {
         super();
     }
 

src/main/java/com/example/demo/utils/ImageStorage.java

@@ -0,0 +1,30 @@
+package com.example.demo.utils;
+
+import io.hypersistence.tsid.TSID;
+import org.springframework.stereotype.Component;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+@Component
+public class ImageStorage {
+    public String save(MultipartFile multipartFile) {
+        if (multipartFile == null || multipartFile.isEmpty()) {
+            return "No image";
+        }
+
+        String id = TSID.Factory.getTsid().toString();
+        String filename = "data/" + id + ".jpg";
+
+        File file = new File(filename);
+
+        try (FileOutputStream output = new FileOutputStream(file)) {
+            output.write(multipartFile.getBytes());
+            return filename;
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

src/test/java/com/example/demo/application/product/CreateProductServiceTest.java

@@ -27,7 +27,7 @@ void createProduct() {
         String name = "제-품";
         Money price = new Money(100_000L);
 
-        Product product = createProductService.createProduct(name, price);
+        Product product = createProductService.createProduct(name, imageUrl, price);
 
         assertThat(product.name()).isEqualTo(name);
         assertThat(product.price()).isEqualTo(price);

src/test/java/com/example/demo/controllers/ProductControllerTest.java

@@ -67,6 +67,6 @@ void create() throws Exception {
             .andExpect(status().isCreated());
 
         verify(createProductService)
-            .createProduct("멋진 제품", new Money(100_000L));
+            .createProduct("멋진 제품", imageUrl, new Money(100_000L));
     }
 }

src/test/java/com/example/demo/models/ProductTest.java

@@ -7,7 +7,7 @@
 class ProductTest {
     @Test
     void creation() {
-        Product product = Product.create("제품명", new Money(123_456L));
+        Product product = Product.create("제품명", imageUrl, new Money(123_456L));
 
         assertThat(product.id()).isNotNull();
         assertThat(product.name()).isEqualTo("제품명");