파일 업로드 & 다운로드

File Upload through http

• Multi-part Forms

• Raw Data Uploads

File Upload(Raw data upload)

curl http://localhost:8080/assets/upload\?path\=testfolder1/testfolder2/ohho.pdf 
--request POST --data-binary "@test.pdf" 
-H "Content-Type:application/octet-stream" -i

@PostMapping("/upload")
public ApiResponse<AssetUploadResponse> uploadFile(@RequestParam String path, @RequestBody byte[] data) {
	assetService.upload(path, data);
	return ApiResponse.ok(List.of(new AssetUploadResponse(path)));
}

File Download(Raw data download)

@GetMapping("/download")
public ResponseEntity<byte[]> downloadAsset(@RequestParam String path) {
	byte[] downloadedFile = assetService.download(path);
	return ResponseEntity.ok(downloadedFile);
}

curl http://localhost:8080/assets/download\
?path\=testfolder1/testfolder2/ohho.pdf --request GET -i > test.pdf

브라우저에서 파일 다운받기

@GetMapping("/download/img")
public ResponseEntity<Resource> downloadImg() {
    return ResponseEntity.ok()
        .contentType(MediaType.IMAGE_PNG) // (3)
        .header(HttpHeaders.CONTENT_DISPOSITION, ContentDisposition.inline() // (4)
            .filename(SAMPLE_FILE_NAME, StandardCharsets.UTF_8)
            .build()
            .toString())
        .body(resource);
  }

@RestController
@RequestMapping("/api/files")
@CrossOrigin(value = {"*"}, exposedHeaders = {"Content-Disposition"})
public class FileBoundary {
   // code ...
}