Merge pull request #112 from wafflestudio/111-비로그인-유저의-사진-업로드-허용

🐛 비로그인 유저의 사진 업로드 허용

Author: jaylovegood

src/main/kotlin/com/wafflestudio/spring2025/common/image/controller/ImageController.kt

@@ -2,7 +2,6 @@ package com.wafflestudio.spring2025.common.image.controller
 
 import com.wafflestudio.spring2025.common.image.dto.ImageUploadResponse
 import com.wafflestudio.spring2025.common.image.service.ImageService
-import com.wafflestudio.spring2025.domain.auth.AuthRequired
 import com.wafflestudio.spring2025.domain.auth.LoggedInUser
 import com.wafflestudio.spring2025.domain.user.model.User
 import io.swagger.v3.oas.annotations.Operation
@@ -18,7 +17,6 @@ import org.springframework.web.bind.annotation.RequestPart
 import org.springframework.web.bind.annotation.RestController
 import org.springframework.web.multipart.MultipartFile
 
-@AuthRequired
 @RestController
 @RequestMapping("/api/images")
 class ImageController(
@@ -36,13 +34,13 @@ class ImageController(
         consumes = [MediaType.MULTIPART_FORM_DATA_VALUE],
     )
     fun uploadImage(
-        @Parameter(hidden = true) @LoggedInUser user: User,
+        @Parameter(hidden = true) @LoggedInUser user: User?,
         @RequestPart("image") image: MultipartFile,
         @Parameter(description = "이미지를 저장할 상위 경로", required = false)
         @RequestParam(name = "prefix", required = false)
         prefix: String?,
     ): ResponseEntity<ImageUploadResponse> {
-        val userId = requireNotNull(user.id) { "로그인 사용자 ID가 없습니다." }
+        val userId = user?.id
         val response = imageService.uploadImage(ownerId = userId, image = image, prefix = prefix)
         return ResponseEntity.ok(response)
     }

src/main/kotlin/com/wafflestudio/spring2025/common/image/service/ImageService.kt

@@ -23,7 +23,7 @@ class ImageService(
     private val s3Props: AwsS3Properties,
 ) {
     fun uploadImage(
-        ownerId: Long,
+        ownerId: Long?,
         image: MultipartFile,
         prefix: String?,
     ): ImageUploadResponse {
@@ -32,7 +32,7 @@ class ImageService(
 
         val directory = sanitizePrefix(prefix)
         val ext = extractExtension(image.originalFilename)
-        val key = listOf(directory, ownerId.toString(), "${UUID.randomUUID()}$ext").joinToString(separator = "/")
+        val key = listOf(directory, ownerId?.toString() ?: "new_user", "${UUID.randomUUID()}$ext").joinToString(separator = "/")
 
         val putRequest =
             PutObjectRequest