[Spring] 파일업로드

//controller
/*
	 * 업로드
	 */
	
	/**
	 * File upload.
	 *
	 * @param req the req
	 * @param res the res
	 * @param uploadFile the upload file
	 * @return the response entity
	 */
	@PostMapping(value={Url.COMMON.FILE_UPLOAD})
	@ResponseBody
	public ResponseEntity<Object> fileUpload(HttpServletRequest req, HttpServletResponse res, MultipartFile uploadFile) {
    	
    	Map<String, Object> resultMap = new HashMap<>(); 
        FileInfo _file;
        try {
        	
        	_file = fileService.uploadFile(req);
            if(_file == null || isEmpty(_file.getFileId())) {
            	resultMap.put("result", "FAIL");
            } else {
            	resultMap.put("result", "SUCC");
            	resultMap.put("fileInfo", _file);
            }
			
		} catch (Exception e) {
			log.error(e.getMessage(), e);
		}
        return makeResponseEntity(resultMap);
    }

fileService.java
/**
	 * Upload file.
	 *
	 * @param req the req
	 * @return the file info
	 * @throws IOException Signals that an I/O exception has occurred.
	 */
	public FileInfo uploadFile(HttpServletRequest req) throws IOException;

fileServiceImpl.java
@Override
		public FileInfo uploadFile(HttpServletRequest req) throws IOException {
			FileInfo result = new FileInfo();
			MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) req;
			
			// Upload 경로에 디렉토리가 없을 경우 만듬
			Path uploadDir = Paths.get(UPLOAD_FILE_PATH);
			
			// FIXME file type cd 에 따른 업로드 디렉토리 구분처리
			// FIXME file type이 이미지인 경우 thum 이미지 생성 처리 추가
			// FIXME file group id를 사용할 경우에 대한 처리
			
			
			// 업로드 디렉도리가 존재하지 않거나 디렉도리가 아닐경우 생성합니다.
			if(!Files.isDirectory(uploadDir)) {
				Files.createDirectories(uploadDir);
			}
			
			for(MultipartFile mFile : multipartRequest.getFileMap().values()) {
				
				UUID tempFileName = UUID.randomUUID(); 
				String originalFileName = mFile.getOriginalFilename();        // 원본 파일명
		        String fileExt = FilenameUtils.getExtension(originalFileName);
		        
				if(originalFileName.toLowerCase().endsWith(".tar.bz2")) {
					fileExt = "tar.bz2";
				} else if(originalFileName.toLowerCase().endsWith(".tar.gz")) {
					fileExt = "tar.gz";
				}
				// 물리파일은 확장자를 제외하고 저장한다.
		        String logicalFileName = tempFileName.toString()+ "." + fileExt;
		        //File file = new File(uploadDir + "/" + logicalFileName);
		        //transferTo(mFile, file);
		        
		        byte[] fileBytes = mFile.getBytes();
		        Path filePath = uploadDir.resolve(logicalFileName);
		        Files.write(filePath, fileBytes);
		   
				// 사이즈가 0일 경우 파일이 존재하지 않는 것으로 판단.
				/*if( mFile.getSize() == 0 ) {
					log.warn("Abort upload file. empty fle");
					throw new RuntimeException("Abort upload file. empty fle");
				}*/
				 
				result.setPyscPath(uploadDir.toString());
				result.setPyscNm(logicalFileName);
				result.setOrigNm(originalFileName);
				result.setFileExt(fileExt);
				result.setContentType(mFile.getContentType());
				result.setFileSize(mFile.getSize());
				result.setRegId(loginUserName());
				fileMapper.insertFile(result);
				
				if(isEmpty(result.getFileId())) {
					throw new RuntimeException("Unable to Save File Info : An error occurred while file upload.");
				}
				break;
			}
			
			
			return result;
		}

fileMapper.java

	/**
	 * Insert file.
	 *
	 * @param file the file
	 * @return the int
	 */
	int insertFile(FileInfo file);

fileMapper.xml
<insert id="insertFile" parameterType="fileInfo" useGeneratedKeys="true" keyProperty="fileId">
		INSERT 
			INTO 
		TB_FILE
			(
<!-- 			FILE_GRP_ID -->
			 ORIG_NM
			,PYSC_NM
			,THUMB_NM
			,PYSC_PATH
			,THUMB_PATH
			,FILE_EXT
			,FILE_SIZE
			,CONTENT_TYPE
			,USE_YN
			,REG_ID
			)
		VALUES(
<!-- 			#{fileGrpId} -->
			#{origNm}
			,#{pyscNm}
			,#{thumbNm}
			,#{pyscPath}
			,#{thumbPath}
			,#{fileExt}
			,#{fileSize}
			,#{contentType}
			,'Y'
			,#{regId}
			
			)	
	</insert>