public String uploadImage(MultipartFile image, String bucketName) {

	File imageFile;

	try {
		imageFile = convertMultiPartToFile(image);
	} catch (IOException e) {
		throw new FileUploadException("Unable to convert input stream to file.");
	}

	BufferedImage bimg = null;
	try {
		bimg = ImageIO.read(imageFile);
	} catch (IOException e) {
		throw new FileUploadException("Unable to read image.");
	}

	AmazonS3 s3client = AmazonS3ClientBuilder.standard().withRegion("ap-southeast-1").build();
	TransferManager xfer_mgr = TransferManagerBuilder.standard().withS3Client(s3client).build();
	String fileName = generateFileName(image);

	try {
		Upload xfer = xfer_mgr.upload(new PutObjectRequest(bucketName, fileName, imageFile)
				.withCannedAcl(CannedAccessControlList.PublicRead));

		xfer.waitForCompletion();

	} catch (AmazonServiceException | InterruptedException e) {
		throw new FileUploadException("AWS Error or Upload was interrupted");
	}
	xfer_mgr.shutdownNow();

	return "https://"+bucketName+".s3-ap-southeast-1.amazonaws.com/"+fileName;
}