com.google.api.client.util.ByteStreams Java Examples

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Example #1
Source File: WebController.java    From spring-cloud-gcp with Apache License 2.0 5 votes vote down vote up 
@PostMapping("/submitDocument")
public ModelAndView submitDocument(@RequestParam("documentUrl") String documentUrl) throws IOException {

	// Uploads the document to the GCS bucket
	Resource documentResource = resourceLoader.getResource(documentUrl);
	BlobId outputBlobId = BlobId.of(ocrBucket, documentResource.getFilename());
	BlobInfo blobInfo =
			BlobInfo.newBuilder(outputBlobId)
					.setContentType(getFileType(documentResource))
					.build();

	try (WriteChannel writer = storage.writer(blobInfo)) {
		ByteStreams.copy(documentResource.getInputStream(), Channels.newOutputStream(writer));
	}

	// Run OCR on the document
	GoogleStorageLocation documentLocation =
			GoogleStorageLocation.forFile(outputBlobId.getBucket(), outputBlobId.getName());

	GoogleStorageLocation outputLocation = GoogleStorageLocation.forFolder(
			outputBlobId.getBucket(), "ocr_results/" + documentLocation.getBlobName());

	ListenableFuture<DocumentOcrResultSet> result =
			documentOcrTemplate.runOcrForDocument(documentLocation, outputLocation);

	ocrStatusReporter.registerFuture(documentLocation.uriString(), result);

	return new ModelAndView("submit_done");
}