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[Spring Boot] 업로드된 파일의 메타정보 본문

Backend/스프링부트

[Spring Boot] 업로드된 파일의 메타정보

Gaejirang-e 2022. 12. 27. 17:16

[article/write.html]

<!DOCTYPE html>
<html lang="ko"
      xmlns:th="http://thymeleaf.org"
      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
      layout:decorate="~{layout/layout.html}"
>
<head>
    <title>글쓰기</title>
</head>

<body>
<section layout:fragment="content">
    <div class="container">
        <h1>글쓰기</h1>

        <form th:action method="post" enctype="multipart/form-data">
            <div>
                <span>제목</span>
                <input type="text" name="subject">
            </div>
            <div>
                <span>내용</span>
                <textarea name="content"></textarea>
            </div>
            <div>
                <span>본문이미지</span>
                <input type="file" name="common__bodyImg__1" accept="image/png, image/gif, image/jpeg">
                <input type="file" name="common__bodyImg__2" accept="image/png, image/gif, image/jpeg">
            </div>
            <div>
                <input type="submit" value="작성">
            </div>
        </form>
    </div>
</section>
</body>
</html>

[Util.java]

public class Util {
    public static class date {
        public static String getCurrentDateFormatted(String pattern) {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat(pattern);
            return simpleDateFormat.format(new Date());
        }
    }
    public static class file {
        public static String getExt(String filename) {
            return Optional.ofNullable(filename)
                    .filter(f -> f.contains("."))
                    .map(f -> f.substring(filename.lastIndexOf(".") + 1))
                    .orElse("");
        }

        public static String downloadImg(String url, String filePath) {
            // 부모 디렉터리가 없으면 만들어라
            new File(filePath).getParentFile().mkdirs();

            // url을 통해 이미지를 받고 저장해라
            byte[] imageBytes = new RestTemplate().getForObject(url, byte[].class);
            try {
                Files.write(Paths.get(filePath), imageBytes);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }

            String mimeType = null;
            try {
                // 확장자 감지
                mimeType = new Tika().detect(new File(filePath));
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            // 알아낸 확장자로 바꾸기
            String ext = mimeType.replaceAll("image/", "");
            ext = ext.replaceAll("jpeg", "jpg");

            String newFilePath = filePath + "." + ext;
            // 확장자까지 붙인 바뀐파일 경로를 리턴
            new File(filePath).renameTo(new File(newFilePath));

            return newFilePath;
        }

        public static String getFileExtTypeCodeFromFileExt(String ext) {
            switch (ext) {
                case "jpeg":
                case "jpg":
                case "gif":
                case "png":
                    return "img";
                case "mp4":
                case "avi":
                case "mov":
                    return "video";
                case "mp3":
                    return "audio";
            }
            return "etc";
        }

        public static String getFileExtType2CodeFromFileExt(String ext) {
            switch (ext) {
                case "jpeg":
                case "jpg":
                    return "jpg";
                case "gif":
                    return ext;
                case "png":
                    return ext;
                case "mp4":
                    return ext;
                case "avi":
                    return ext;
                case "mov":
                    return ext;
                case "mp3":
                    return ext;
            }
            return "etc";
        }
    }
}

[GenFileService.java]

@Service
@RequiredArgsConstructor
public class GenFileService {
    private final GenFileRepository genFileRepository;

    public void saveFiles(Article article, Map<String, MultipartFile> fileMap) {
        String relTypeCode = "article";
        long relId = article.getId();

        for(String inputName : fileMap.keySet()) {
            MultipartFile multipartFile = fileMap.get(inputName);

            String[] inputNameBits = inputName.split("__");

            String typeCode = inputNameBits[0];
            String type2Code = inputNameBits[1];
            String originFileName = multipartFile.getOriginalFilename();
            String fileExt = Util.file.getExt(originFileName);
            String fileExtTypeCode = Util.file.getFileExtTypeCodeFromFileExt(fileExt);
            String fileExtType2Code = Util.file.getFileExtType2CodeFromFileExt(fileExt);
            int fileNo = Integer.parseInt(inputNameBits[2]);
            int fileSize = (int) multipartFile.getSize();
            String fileDir = relTypeCode + "/" + Util.date.getCurrentDateFormatted("yyyy_MM_dd");


            GenFile genFile = GenFile.builder()
                    .relTypeCode(relTypeCode)
                    .relId(relId)
                    .typeCode(typeCode)
                    .type2Code(type2Code)
                    .fileExtTypeCode(fileExtTypeCode)
                    .fileExtType2Code(fileExtType2Code)
                    .fileNo(fileNo)
                    .fileSize(fileSize)
                    .fileDir(fileDir)
                    .fileExt(fileExt)
                    .originFileName(originFileName)
                    .build();

            genFileRepository.save(genFile);
        }
    }
}

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