Java tutorial
/** * Wabi-Sabi DAM solution * Open source Digital Asset Management platform of great simplicity and beauty. * Copyright (C) 2016 Urchinly <wabi-sabi@urchinly.uk> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package uk.urchinly.wabi.ingest; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.util.Collections; import org.apache.commons.io.IOUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.amqp.rabbit.core.RabbitTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.transaction.annotation.Transactional; import org.springframework.util.FileCopyUtils; import org.springframework.web.bind.annotation.CrossOrigin; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.multipart.MultipartFile; import uk.urchinly.wabi.constants.MessagingConstants; @CrossOrigin @RestController public class UploadController { private static final Logger logger = LoggerFactory.getLogger(UploadController.class); @Value("${app.share.path}") private String appSharePath; @Autowired private AssetRepository assetMongoRepository; @Autowired private RabbitTemplate rabbitTemplate; @RequestMapping(method = RequestMethod.POST, value = "/upload") public ResponseEntity<String> upload(@RequestParam("file") MultipartFile file) { if (file.isEmpty()) { logger.debug("Upload file is empty."); return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Failed with empty file"); } BufferedOutputStream outputStream = null; try { File outputFile = new File(appSharePath + "/" + file.getOriginalFilename()); outputStream = new BufferedOutputStream(new FileOutputStream(outputFile)); FileCopyUtils.copy(file.getInputStream(), outputStream); Asset asset = new Asset(file.getOriginalFilename(), file.getOriginalFilename(), (double) file.getSize(), file.getContentType(), Collections.emptyList()); this.saveAsset(asset); } catch (Exception e) { logger.warn(e.getMessage(), e); return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Failed with error"); } finally { IOUtils.closeQuietly(outputStream); } return ResponseEntity.ok("File accepted"); } @Transactional private void saveAsset(Asset asset) { Asset savedAsset = this.assetMongoRepository.save(asset); this.rabbitTemplate.convertAndSend(MessagingConstants.ASSET_INSERT_IMAGE_ROUTE, savedAsset.toString()); logger.debug("Ingested asset with id {}.", savedAsset.getId()); } }