+ Closer.close(imageDataInputStream);
+ Closer.flush(uploadedImage);
+ }
+ throw new RedirectException("imageBrowser.html?album=" + parent.getId());
+ }
+ }
+
+ //
+ // PRIVATE METHODS
+ //
+
+ /**
+ * Tries to detect the MIME type of the encoded image.
+ *
+ * @param imageData
+ * The encoded image
+ * @return The MIME type of the image, or “application/octet-stream” if the
+ * image type could not be detected
+ */
+ private static String getMimeType(byte[] imageData) {
+ ByteArrayInputStream imageDataInputStream = new ByteArrayInputStream(imageData);
+ try {
+ ImageInputStream imageInputStream = ImageIO.createImageInputStream(imageDataInputStream);
+ Iterator<ImageReader> imageReaders = ImageIO.getImageReaders(imageInputStream);
+ if (imageReaders.hasNext()) {
+ return fromNullable(imageReaders.next().getOriginatingProvider().getMIMETypes())
+ .or(new String[] { UNKNOWN_MIME_TYPE })[0];