백엔드 생존코스 7기 이해준

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, Money price, String url) {
+        Product product = Product.create(name, price, url);
 
         productRepository.save(product);
 

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

@@ -5,33 +5,57 @@
 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.web.bind.annotation.*;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.multipart.MultipartFile;
+
+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) {
         String name = dto.name().strip();
         Money price = new Money(dto.price());
 
-        createProductService.createProduct(name, price);
+        MultipartFile multipartFile = dto.image();
+
+        if (multipartFile == null || multipartFile.isEmpty()) {
+            throw new NullPointerException();
+        }
+        try {
+            String url = imageStorage.save(multipartFile.getBytes());
+            createProductService.createProduct(name, price, url);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
     }
 }

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
+        String name,
+        Long price,
+        MultipartFile image
 ) {
 }

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

@@ -16,7 +16,8 @@ public List<ProductDto> getProducts() {
     public record ProductDto(
         String id,
         String name,
-        Long price
+        Long price,
+        String image
     ) {
     }
 }

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

@@ -28,7 +28,8 @@ public ProductListDto fetchProductListDto() {
                 new ProductListDto.ProductDto(
                     resultSet.getString("id"),
                     resultSet.getString("name"),
-                    resultSet.getLong("price")
+                    resultSet.getLong("price"),
+                    resultSet.getString("image")
                 )
         );
 

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

@@ -1,6 +1,11 @@
 package com.example.demo.models;
 
-import jakarta.persistence.*;
+import jakarta.persistence.AttributeOverride;
+import jakarta.persistence.Column;
+import jakarta.persistence.Embedded;
+import jakarta.persistence.EmbeddedId;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Table;
 import org.hibernate.annotations.CreationTimestamp;
 import org.hibernate.annotations.UpdateTimestamp;
 
@@ -12,7 +17,7 @@ public class Product {
     @EmbeddedId
     private ProductId id;
 
-    @Column(name = "name")
+    @Column(name = "name", nullable = false)
     private String name;
 
     @CreationTimestamp
@@ -22,20 +27,24 @@ public class Product {
     private LocalDateTime updatedAt;
 
     @Embedded
-    @AttributeOverride(name = "value", column = @Column(name = "price"))
+    @AttributeOverride(name = "value", column = @Column(name = "price", nullable = false))
     private Money price;
 
+    @Column(name = "image", nullable = false)
+    private String image;
+
     private Product() {
     }
 
-    public Product(ProductId id, String name, Money price) {
+    public Product(ProductId id, String name, Money price, String image) {
         this.id = id;
         this.name = name;
         this.price = price;
+        this.image = image;
     }
 
-    public static Product create(String name, Money price) {
-        return new Product(ProductId.generate(), name, price);
+    public static Product create(String name, Money price, String image) {
+        return new Product(ProductId.generate(), name, price, image);
     }
 
     public ProductId id() {
@@ -49,4 +58,8 @@ public String name() {
     public Money price() {
         return price;
     }
+
+    public String image() {
+        return image;
+    }
 }

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

@@ -0,0 +1,25 @@
+package com.example.demo.utils;
+
+import io.hypersistence.tsid.TSID;
+import org.springframework.stereotype.Component;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+@Component
+public class ImageStorage {
+    public String save(byte[] bytes) {
+        String id = TSID.Factory.getTsid().toString();
+        String url = "data/" + id + ".jpg";
+        File file = new File(url);
+
+        try (OutputStream outputStream = new FileOutputStream(file)) {
+            outputStream.write(bytes);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        return url;
+    }
+}

src/test/java/com/example/demo/Fixtures.java

@@ -1,18 +1,26 @@
 package com.example.demo;
 
-import com.example.demo.models.*;
+import com.example.demo.models.Cart;
+import com.example.demo.models.CartId;
+import com.example.demo.models.LineItem;
+import com.example.demo.models.LineItemId;
+import com.example.demo.models.Money;
+import com.example.demo.models.Product;
+import com.example.demo.models.ProductId;
 
 import java.util.List;
 
 public class Fixtures {
+    private static final String filename = "src/test/resources/files/test.jpg";
+
     public static Product product() {
         return product(1);
     }
 
     public static Product product(int number) {
         ProductId productId = new ProductId("012300000000" + number);
         return new Product(
-                productId, "Product #" + number, new Money(123_000L));
+                productId, "Product #" + number, new Money(123_000L), filename);
     }
 
     public static Cart cart() {

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

@@ -15,6 +15,8 @@ class CreateProductServiceTest {
 
     private CreateProductService createProductService;
 
+    private final String filename = "src/test/resources/files/test.jpg";
+
     @BeforeEach
     void setUp() {
         productRepository = mock(ProductRepository.class);
@@ -27,7 +29,7 @@ void createProduct() {
         String name = "제-품";
         Money price = new Money(100_000L);
 
-        Product product = createProductService.createProduct(name, price);
+        Product product = createProductService.createProduct(name, price, filename);
 
         assertThat(product.name()).isEqualTo(name);
         assertThat(product.price()).isEqualTo(price);

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

@@ -4,22 +4,25 @@
 import com.example.demo.application.product.GetProductListService;
 import com.example.demo.dtos.ProductListDto;
 import com.example.demo.models.Money;
+import com.example.demo.utils.ImageStorage;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
 import org.springframework.boot.test.mock.mockito.MockBean;
-import org.springframework.http.MediaType;
+import org.springframework.mock.web.MockMultipartFile;
 import org.springframework.test.context.ActiveProfiles;
 import org.springframework.test.web.servlet.MockMvc;
 
+import java.io.FileInputStream;
 import java.util.List;
 
 import static com.example.demo.controllers.helpers.ResultMatchers.contentContains;
+import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.verify;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
-import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
 @WebMvcTest(ProductController.class)
@@ -34,39 +37,43 @@ class ProductControllerTest {
     @MockBean
     private CreateProductService createProductService;
 
+    @MockBean
+    private ImageStorage imageStorage;
+
+    private final String filename = "src/test/resources/files/test.jpg";
+
     @Test
     @DisplayName("GET /products")
     void list() throws Exception {
         ProductListDto.ProductDto productDto =
-            new ProductListDto.ProductDto("test-id", "제품", 100_000L);
+                new ProductListDto.ProductDto("test-id", "제품", 100_000L, filename);
 
         given(getProductListService.getProductListDto()).willReturn(
-            new ProductListDto(List.of(productDto)));
+                new ProductListDto(List.of(productDto)));
 
         mockMvc.perform(get("/products"))
-            .andExpect(status().isOk())
-            .andExpect(contentContains("제품"));
+                .andExpect(status().isOk())
+                .andExpect(contentContains("제품"));
     }
 
     @Test
     @DisplayName("POST /products")
     void create() throws Exception {
-        String json = String.format(
-            """
-                {
-                    "name": "멋진 제품",
-                    "price": %d
-                }
-                """,
-            100_000L
-        );
-
-        mockMvc.perform(post("/products")
-                .contentType(MediaType.APPLICATION_JSON)
-                .content(json))
-            .andExpect(status().isCreated());
+
+        MockMultipartFile file = new MockMultipartFile(
+                "image", "test.jpg", "image/jpeg",
+                new FileInputStream(filename));
+
+        given(imageStorage.save(any())).willReturn(filename);
+
+        mockMvc.perform(multipart("/products")
+                        .file(file)
+                        .param("name", "멋진 제품")
+                        .param("price", String.valueOf(100_000L)))
+                .andExpect(status().isCreated());
 
         verify(createProductService)
-            .createProduct("멋진 제품", new Money(100_000L));
+                .createProduct("멋진 제품", new Money(100_000L), filename);
+        verify(imageStorage).save(any());
     }
 }

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

@@ -5,12 +5,15 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 class ProductTest {
+    private final String filename = "src/test/resources/files/test.jpg";
+
     @Test
     void creation() {
-        Product product = Product.create("제품명", new Money(123_456L));
+        Product product = Product.create("제품명", new Money(123_456L), filename);
 
         assertThat(product.id()).isNotNull();
         assertThat(product.name()).isEqualTo("제품명");
         assertThat(product.price()).isEqualTo(new Money(123_456L));
+        assertThat(product.image()).isEqualTo(filename);
     }
 }