feat: Product 상세 조회 구현

src/main/kotlin/org/store/clothstar/common/config/SecurityConfiguration.kt

@@ -61,7 +61,7 @@ class SecurityConfiguration(
                         "/v1/members/login", "/signup", "/v1/members/email/**", "/v1/access",
                         "/v1/categories/**", "/v1/products/**", "/v1/productLines/**", "/v2/productLines/**",
                         "/productLinePagingSlice", "/productLinePagingOffset",
-                        "/v3/products",
+                        "/v3/products/**",
                         "/v1/orderdetails", "/v1/orders", "membersPagingOffset", "membersPagingSlice",
                         "/v1/orderdetails", "/v1/orders", "/v2/orders", "/v3/orders", "/v1/orders/list",
                         "/v1/orders/list", "/ordersPagingOffset", "/ordersPagingSlice", "/v2/orders/list",

src/main/kotlin/org/store/clothstar/product/controller/ProductController.kt

@@ -7,21 +7,17 @@ import org.springframework.http.ResponseEntity
 import org.springframework.validation.annotation.Validated
 import org.springframework.web.bind.annotation.*
 import org.springframework.web.multipart.MultipartFile
-import org.store.clothstar.category.service.CategoryService
 import org.store.clothstar.common.dto.MessageDTO
 import org.store.clothstar.product.dto.request.ProductCreateRequest
+import org.store.clothstar.product.dto.response.ProductResponse
 import org.store.clothstar.product.service.ProductApplicationService
-import org.store.clothstar.product.service.ProductService
-import java.net.URI
 
 @Tag(name = "Products", description = "Products(상품 옵션) 관련 API 입니다.")
 @RequestMapping("/v3/products")
 @RestController
 private class ProductController (
     private val productApplicationService: ProductApplicationService,
-    private val productService: ProductService,
-    private val categoryService: CategoryService,
-) {
+    ) {
     @PostMapping
     @Operation(summary = "상품 등록",
         description = "카테고리 아이디, 상품 이름, 내용, 가격, 상태를 입력하여 상품을 신규 등록한다.")
@@ -41,4 +37,11 @@ private class ProductController (
         return ResponseEntity(messageDTO, HttpStatus.CREATED)
 
     }
+
+    @GetMapping("/{productId}")
+    @Operation(summary = "상품 상세 조회", description = "상품 ID를 사용하여 특정 상품의 상세 정보를 조회한다.")
+    fun getProductDetails(@PathVariable productId: Long): ResponseEntity<ProductResponse> {
+        val productResponse = productApplicationService.getProductDetails(productId)
+        return ResponseEntity(productResponse, HttpStatus.OK)
+    }
 }

src/main/kotlin/org/store/clothstar/product/domain/Item.kt

@@ -1,6 +1,7 @@
 package org.store.clothstar.product.domain
 
 import jakarta.persistence.*
+import org.hibernate.annotations.BatchSize
 import org.store.clothstar.product.domain.type.DisplayStatus
 import org.store.clothstar.product.domain.type.SaleStatus
 

src/main/kotlin/org/store/clothstar/product/domain/ItemAttribute.kt

@@ -1,6 +1,7 @@
 package org.store.clothstar.product.domain
 
 import jakarta.persistence.Embeddable
+import org.hibernate.annotations.BatchSize
 
 /**
  * { "optionId": 1, "name": "색상", "value": "중청", "valueId": 1 }

src/main/kotlin/org/store/clothstar/product/domain/OptionValue.kt

@@ -1,6 +1,7 @@
 package org.store.clothstar.product.domain
 
 import jakarta.persistence.*
+import org.hibernate.annotations.BatchSize
 import org.store.clothstar.product.domain.type.ProductColor
 
 

src/main/kotlin/org/store/clothstar/product/domain/Product.kt

@@ -1,6 +1,9 @@
 package org.store.clothstar.product.domain
 
 import jakarta.persistence.*
+import org.hibernate.annotations.BatchSize
+import org.hibernate.annotations.Fetch
+import org.hibernate.annotations.FetchMode
 import org.store.clothstar.common.entity.BaseEntity
 import org.store.clothstar.product.domain.type.DisplayStatus
 import org.store.clothstar.product.domain.type.ProductColor
@@ -24,17 +27,18 @@ class Product(
     var name: String,
     var content: String,
     var price: Int,
-    // 색상 목록
 
+    // 색상 목록
     @ElementCollection(targetClass = ProductColor::class)
     @CollectionTable(name = "product_colors", joinColumns = [JoinColumn(name = "product_id")])
     @Enumerated(EnumType.STRING)
+    @Fetch(FetchMode.SUBSELECT)
     var productColors: MutableSet<ProductColor> = mutableSetOf(),
 
     // 이미지 목록
     @ElementCollection
     @CollectionTable(name = "product_image", joinColumns = [JoinColumn(name = "product_line_id")])
-    var imageList: MutableList<ProductImage> = mutableListOf(),
+    var imageList: MutableSet<ProductImage> = mutableSetOf(),
 
     // 기타 정보
     var saleCount: Long = 0,
@@ -44,9 +48,11 @@ class Product(
     var saleStatus: SaleStatus,  // 판매 상태
 
     // 연관 관계 (1:N)
+    @Fetch(FetchMode.SUBSELECT)
     @OneToMany(mappedBy = "product", cascade = [CascadeType.ALL], fetch = FetchType.LAZY)
-    var productOptions: MutableSet<ProductOption> = mutableSetOf(),
+    var productOptions: MutableList<ProductOption> = mutableListOf(),
 
+    @Fetch(FetchMode.SUBSELECT)
     @OneToMany(mappedBy = "product", fetch = FetchType.LAZY, cascade = [CascadeType.ALL])
     var items: MutableList<Item> = mutableListOf(),
 ) : BaseEntity() {

src/main/kotlin/org/store/clothstar/product/domain/ProductImage.kt

@@ -3,6 +3,7 @@ package org.store.clothstar.product.domain
 import jakarta.persistence.Embeddable
 import jakarta.persistence.EnumType
 import jakarta.persistence.Enumerated
+import org.hibernate.annotations.BatchSize
 import org.store.clothstar.product.domain.type.ImageType
 
 @Embeddable

src/main/kotlin/org/store/clothstar/product/domain/ProductOption.kt

@@ -1,6 +1,7 @@
 package org.store.clothstar.product.domain
 
 import jakarta.persistence.*
+import org.hibernate.annotations.BatchSize
 
 
 /**

src/main/kotlin/org/store/clothstar/product/dto/response/ItemResponse.kt → src/main/kotlin/org/store/clothstar/product/dto/response/ProductResponse.kt

@@ -41,11 +41,11 @@ class ProductResponse(
                 id = product.productId!!,
                 name = product.name,
                 description = product.content,
+                imageList = product.imageList.map { ImageResponse.from(it) },
+                productColors = product.productColors.toSet(),
                 price = product.price,
                 displayStatus = product.displayStatus,
                 saleStatus = product.saleStatus,
-                productColors = product.productColors.toSet(),
-                imageList = product.imageList.map { ImageResponse.from(it) },
                 productOptions = product.productOptions.map { ProductOptionResponse.from(it) },
                 items = product.items.map { ItemResponse.from(it) }
             )

src/main/kotlin/org/store/clothstar/product/repository/ProductRepository.kt

@@ -1,10 +1,14 @@
 package org.store.clothstar.product.repository
 
+import org.springframework.data.jpa.repository.EntityGraph
 import org.springframework.data.jpa.repository.JpaRepository
 import org.springframework.stereotype.Repository
 import org.store.clothstar.product.domain.Product
+import java.util.*
 
 @Repository
 interface ProductRepository : JpaRepository<Product, Long> {
     fun findByProductIdIn(productLineIds: List<Long>): List<Product?>
+
+    fun findWithDetailsByProductId(productId: Long): Optional<Product>
 }

src/main/kotlin/org/store/clothstar/product/service/ProductApplicationService.kt

@@ -6,9 +6,11 @@ import org.springframework.web.multipart.MultipartFile
 import org.store.clothstar.member.domain.Member
 import org.store.clothstar.member.domain.vo.MemberShoppingActivity
 import org.store.clothstar.member.service.MemberService
+import org.store.clothstar.product.domain.Product
 import org.store.clothstar.product.domain.ProductImage
 import org.store.clothstar.product.domain.type.ImageType
 import org.store.clothstar.product.dto.request.ProductCreateRequest
+import org.store.clothstar.product.dto.response.ProductResponse
 
 @Service
 class ProductApplicationService(
@@ -41,7 +43,7 @@ class ProductApplicationService(
         val mainImageUrl = "https://on.com2us.com/wp-content/uploads/2023/12/VxdEKDNZCp9hAW5TU5-3MZTePLGSdlYKzEZUyVLDB-Cyo950Ee19yaOL8ayxgJzEfMYfzfLcRYuwkmKEs2cg0w.webp"
         product.imageList.add(ProductImage(mainImageUrl, mainImageUrl, ImageType.MAIN))
 
-        // 3. 서브 이미지 업로드 및 저장
+        // 3. 서브 이미지 업로드 및® 저장
         subImages?.forEach { subImage ->
 //            val subImageUrl = s3Service.uploadFile(subImage)
             val subImageUrl = "https://on.com2us.com/wp-content/uploads/2023/12/%EC%98%A4%EA%B5%AC%EC%99%80-%EB%B9%84%EB%B0%80%EC%9D%98%EC%88%B2-002.jpg"
@@ -61,4 +63,10 @@ class ProductApplicationService(
             product.items.add(item)
         }
     }
+
+    @Transactional(readOnly = true)
+    fun getProductDetails(productId: Long): ProductResponse {
+
+        return productService.getProductDetails(productId)
+    }
 }

src/main/kotlin/org/store/clothstar/product/service/ProductService.kt

@@ -1,27 +1,32 @@
 package org.store.clothstar.product.service
 
+import jakarta.persistence.EntityNotFoundException
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
-import org.springframework.web.server.ResponseStatusException
 import org.store.clothstar.product.domain.Product
 import org.store.clothstar.product.dto.response.ProductResponse
-import org.store.clothstar.product.repository.ItemRepository
-import org.store.clothstar.product.repository.OptionValueRepository
-import org.store.clothstar.product.repository.ProductOptionRepository
 import org.store.clothstar.product.repository.ProductRepository
 
 @Service
 class ProductService(
     private val productRepository: ProductRepository,
 ) {
+    @Transactional
+    fun createProduct(product: Product): Product {
+        return productRepository.save(product)
+    }
+
+    @Transactional(readOnly = true)
+    fun getProductDetails(productId: Long): ProductResponse {
+        val product = productRepository.findWithDetailsByProductId(productId)
+            .orElseThrow { EntityNotFoundException("상품을 찾을 수 없습니다.") }
+
+        return ProductResponse.from(product)
+    }
+
     fun findByProductIdIn(productIds: List<Long>): List<Product> {
         return productRepository.findByProductIdIn(productIds).map {
             it ?: throw IllegalArgumentException("상품을 조회할 수 없습니다.")
         }
     }
-
-    @Transactional
-    fun createProduct(product: Product): Product {
-        return productRepository.save(product)
-    }
 }

src/main/resources/application-db.yml

@@ -30,7 +30,7 @@ spring:
   jpa:
     properties:
       hibernate:
-        default_batch_fetch_size: 1000
+        default_batch_fetch_size: 200
 
 --- # local 공통 설정
 spring:
@@ -67,8 +67,8 @@ spring:
   jpa:
     hibernate:
       ddl-auto: update
-    show-sql: true
     database-platform: org.hibernate.dialect.MySQLDialect
     properties:
       hibernate:
-        format_sql: true
+        format_sql: true
+        show_sql: true

src/main/resources/application.yml

@@ -5,7 +5,7 @@ jasypt:
 spring:
   profiles:
     active:
-      - local, mybatis
+      - local
     group:
       local:
         - db-local