Feat: S3 파일 업로드 베이스 코드 구현

src/main/java/com/seveneleven/devlens/global/exception/GlobalExceptionHandler.java

@@ -13,7 +13,6 @@ public class GlobalExceptionHandler {
 
     @ExceptionHandler(BusinessException.class)
     public ResponseEntity<APIResponse<?>> handleBusinessException(BusinessException e) {
-        e.printStackTrace();
         return ResponseEntity
                 .status(e.getErrorCode().getStatus())
                 .body(APIResponse.fail(e.getErrorCode()));

src/main/java/com/seveneleven/devlens/global/response/APIResponse.java

@@ -39,9 +39,9 @@ public static <T> APIResponse<T> fail(ErrorCode code, String message) {
     }
 
     //생성
-//    public static <T> APIResponse<T> create(T data) {
-//        return new APIResponse<>(data);
-//    }
+    public static <T> APIResponse<T> create(T data) {
+        return new APIResponse<>(SuccessCode.CREATED.getStatusCode(), SuccessCode.CREATED.getMessage(), data);
+    }
 
     public static <T> APIResponse<T> create(int code, String message, T data) {
         return new APIResponse<>(code, message, data);

src/main/java/com/seveneleven/devlens/global/util/file/Service/FileService.java

@@ -1,6 +1,7 @@
 package com.seveneleven.devlens.global.util.file.Service;
 
 import com.seveneleven.devlens.global.exception.BusinessException;
+import com.seveneleven.devlens.global.response.APIResponse;
 import com.seveneleven.devlens.global.response.ErrorCode;
 import com.seveneleven.devlens.global.util.file.FileValidator;
 import com.seveneleven.devlens.global.util.file.dto.FileMetadataDto;
@@ -28,7 +29,7 @@ public class FileService {
      * @return FileMetadataDto 업로드한 파일 메타데이터
      */
     @Transactional
-    public FileMetadataDto uploadFile(MultipartFile file, Long uploaderId, String fileCategory, Long referenceId) throws Exception {
+    public APIResponse uploadFile(MultipartFile file, Long uploaderId, String fileCategory, Long referenceId) throws Exception {
         //1. 파일 검증
         FileValidator.validateFile(file, fileCategory);
 
@@ -67,7 +68,7 @@ public FileMetadataDto uploadFile(MultipartFile file, Long uploaderId, String fi
             FileMetadata savedMetadata = fileMetadataRepository.save(metadata);
 
             //DTO로 변환 후 반환
-            return FileMetadataDto.toDto(savedMetadata);
+            return APIResponse.create(FileMetadataDto.toDto(savedMetadata));
 
         } catch (Exception e){
             //저장 실패시 S3에서 삭제

src/main/java/com/seveneleven/devlens/global/util/file/Service/S3ClientService.java

@@ -36,7 +36,13 @@ public String generateUniqueFileName(String originalFileName) {
      * 키 = S3 저장시 파일 경로
      */
     public String generateS3Key(Long uploaderId, String category, String fileName) {
-        return String.format("%s/%s/%s", uploaderId, category, fileName);
+        return new StringBuilder()
+                .append(uploaderId)
+                .append("/")
+                .append(category)
+                .append("/")
+                .append(fileName)
+                .toString();
     }
 
     /**

src/main/java/com/seveneleven/devlens/global/util/file/controller/FileController.java

@@ -48,9 +48,9 @@ public class FileController {
                     @ApiResponse(responseCode = "400", description = "Invalid file upload request")
             }
     )
-    public ResponseEntity<FileMetadataDto> uploadFile(@RequestParam("file")  @Schema(type = "string", format = "binary", description = "File to upload") MultipartFile file) throws Exception {
-        FileMetadataDto fileMetadataDto = fileService.uploadFile(file, 1L, "POST_ATTACHMENT", 1L);
-//        return APIResponse.success(fileMetadataDto);
-        return ResponseEntity.status(HttpStatus.CREATED).body(fileMetadataDto);
+    public ResponseEntity<Object> uploadFile(@RequestParam("file")  @Schema(type = "string", format = "binary", description = "File to upload") MultipartFile file) throws Exception {
+         APIResponse uploadResponse = fileService.uploadFile(file, 1L, "POST_ATTACHMENT", 1L);
+
+        return ResponseEntity.status(uploadResponse.getCode()).body(uploadResponse.getData());
     }
 }