Spring Boot AWS credentials Unauthorized

Question

I m working on a spring boot application and connecting it with Amazon S3 bucket. It is a simple application for uploading videos on aws.

VideoService Class

@Service
@RequiredArgsConstructor
public class VideoService {

    private final S3Service s3Service;
    private final VideoRepository videoRepository;


    public void uploadFile(MultipartFile file)
    {
        String videoURL = s3Service.uploadFile(file);

        var video = new Video();
        video.setVideoUrl(videoURL);

        videoRepository.save(video);

    }
}

Service Class


@Service
@RequiredArgsConstructor
public class S3Service implements FileService{

    public static final String BUCKET_NAME = "****";

    private final AmazonS3Client amazonS3Client;



    @Override
    public String uploadFile(MultipartFile file) {
        var filenameExtension = StringUtils.getFilenameExtension(file.getOriginalFilename());

        var key = UUID.randomUUID().toString() + "." + filenameExtension;

        var metadata = new ObjectMetadata();
        metadata.setContentLength(file.getSize());
        metadata.setContentType(file.getContentType());

        try {
            amazonS3Client.putObject(BUCKET_NAME, key, file.getInputStream(), metadata);
        } catch (IOException ioException) {
            throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR,
                    "An Exception occured while uploading the file");
        }

        amazonS3Client.setObjectAcl(BUCKET_NAME, key, CannedAccessControlList.PublicRead);

        return amazonS3Client.getResourceUrl(BUCKET_NAME, key);
    }
}

Controller class:

@RestController
@RequestMapping("/api/videos")
@RequiredArgsConstructor
public class VideoController {


    private final VideoService videoService;

    @PostMapping
    @ResponseStatus(HttpStatus.CREATED)
    public void uploadVideo(@RequestParam("file")MultipartFile file)
    {
        videoService.uploadFile(file);
    }
}

I already created s3 bucket and access key on aws

The access key and secrey key are stored in VM options: -Dcloud.aws.credentials.access-key=**** -Dcloud.aws.credentials.secret-key=*****

this is what I get in Postman: Postman

this is shown in browser: Browser localhost

Did I miss something?

I was following a tutorial and checked every single code with the completed repo and everything was the same. Instead of giving me 200 status it is giving me 401 status.

smac2020 · Accepted Answer · 2023-03-21T16:29:49.550

I have the exact same use case. One difference is I am using Amazon S3 Java V2 - which is the recommended SDK version to use.

My Controller.

  @RequestMapping(value = "/upload", method = RequestMethod.POST)
    @ResponseBody
    public String singleFileUpload(@RequestParam("file") MultipartFile file) {
        try {
            byte[] bytes = file.getBytes();
            String fileName = file.getOriginalFilename();
            UUID uuid = UUID.randomUUID();
            String unqueFileName = uuid + "-" + fileName;

            DynamoDBService dbService = new DynamoDBService();
            S3Service s3Service = new S3Service();
            AnalyzePhotos analyzePhotos = new AnalyzePhotos();
            UploadEndpoint endpoint = new UploadEndpoint(analyzePhotos, dbService, s3Service);
            endpoint.upload(bytes, fileName);
            return "You have uploaded "+fileName;

        } catch (Exception e) {
            e.printStackTrace();
        }
        return "File was not uploaded";
    }

Notice that i am getting the byte[] of the upload file.

The endpoint.upload() is here:

public void upload(byte[] bytes, String name) {
  // Put the file into the bucket.
  s3Service.putObject(bytes, PhotoApplicationResources.STORAGE_BUCKET, name);
  this.tagAfterUpload(name);
}

The s3Service.putObject() is here:

  // Places an image into a S3 bucket.
    public void putObject(byte[] data, String bucketName, String objectKey) {
        S3Client s3 = getClient();
        try {
            s3.putObject(PutObjectRequest.builder()
                    .bucket(bucketName)
                    .key(objectKey)
                    .build(),
                RequestBody.fromBytes(data));
        } catch (S3Exception e) {
            System.err.println(e.getMessage());
            e.printStackTrace();
            throw e;
        }
    }

The getClient() is

private S3Client getClient() {
        return S3Client.builder()
            .region(PhotoApplicationResources.REGION)
            .build();
    }

Now all of this works and can be invoked from Postman:

Looks like you have Spring Security Dependencies in your POM file (based on your screenshot of a forced login). You should remove them and see if your controller gets the file when setting a break point. You should see:

You re, I commented spring-boot-starter-oauth2-resource-server in the dependencies. Thank you very much sir! — Jack, Mar 21 '23 at 16:33

Spring Boot AWS credentials Unauthorized

1 Answers1