Java tutorial
/* * Copyright (C) 2000 - 2018 Silverpeas * 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. * * As a special exception to the terms and conditions of version 3.0 of * the GPL, you may redistribute this Program in connection with Free/Libre * Open Source Software ("FLOSS") applications as described in Silverpeas's * FLOSS exception. You should have received a copy of the text describing * the FLOSS exception, and it is also available here: * "http://www.silverpeas.org/docs/core/legal/floss_exception.html" * * 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 org.silverpeas.mobile.server.servlets; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadBase; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.io.IOUtils; import org.silverpeas.components.gallery.GalleryComponentSettings; import org.silverpeas.components.gallery.constant.MediaResolution; import org.silverpeas.components.gallery.constant.MediaType; import org.silverpeas.components.gallery.delegate.MediaDataCreateDelegate; import org.silverpeas.components.gallery.model.Media; import org.silverpeas.components.gallery.model.MediaPK; import org.silverpeas.components.gallery.model.Photo; import org.silverpeas.components.gallery.service.GalleryService; import org.silverpeas.components.gallery.service.MediaServiceProvider; import org.silverpeas.core.util.file.FileRepositoryManager; import org.silverpeas.mobile.server.common.LocalDiskFileItem; import org.silverpeas.mobile.server.helpers.MediaHelper; import javax.activation.MimetypesFileTypeMap; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.Iterator; import java.util.List; @SuppressWarnings("serial") public class MediaServlet extends AbstractSilverpeasMobileServlet { private static final int MEMORY_THRESHOLD = 1024 * 1024 * 3; // 3MB private static long MAX_FILE_SIZE = 1024 * 1024 * 100; // 100MB private static long MAX_REQUEST_SIZE = 1024 * 1024 * 110; // 110MB @Override public void init(final ServletConfig config) throws ServletException { super.init(config); MAX_FILE_SIZE = FileRepositoryManager.getUploadMaximumFileSize(); MAX_REQUEST_SIZE = (long) (MAX_FILE_SIZE * 1.1); } protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { String action = request.getParameter("action"); if (action.equals("view")) { String id = request.getParameter("id"); String instanceId = request.getParameter("instanceId"); Photo photo = getPicture(id); if (photo.canBeAccessedBy(getUserInSession(request))) { InputStream input = photo.getFile(MediaResolution.ORIGINAL).inputStream(); response.setContentType(((Photo) photo).getFileMimeType().getMimeType()); response.setHeader("content-disposition", "attachment; filename=" + photo.getName()); IOUtils.copy(input, response.getOutputStream()); } else { response.sendError(HttpServletResponse.SC_FORBIDDEN); } } } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { checkUserInSession(request, response); processRequest(request, response); } catch (Exception e) { e.printStackTrace(); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String componentId = ""; String albumId = ""; String tempDir = MediaHelper.getTemporaryUploadMediaPath(); // configures upload settings DiskFileItemFactory factory = new DiskFileItemFactory(); // sets memory threshold - beyond which files are stored in disk factory.setSizeThreshold(MEMORY_THRESHOLD); // sets temporary location to store files factory.setRepository(new File(tempDir)); ServletFileUpload upload = new ServletFileUpload(factory); // sets maximum size of upload file upload.setFileSizeMax(MAX_FILE_SIZE); // sets maximum size of request (include file + form data) upload.setSizeMax(MAX_REQUEST_SIZE); // Parse the request @SuppressWarnings("unchecked") List<FileItem> items = null; try { items = upload.parseRequest(request); } catch (FileUploadBase.FileSizeLimitExceededException eu) { response.sendError(HttpServletResponse.SC_REQUEST_ENTITY_TOO_LARGE); return; } catch (FileUploadException e) { e.printStackTrace(); } // Process the uploaded items Iterator iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (item.isFormField()) { if (item.getFieldName().equals("componentId")) componentId = item.getString(); if (item.getFieldName().equals("albumId")) albumId = item.getString(); } else { String fileName = item.getName(); File file = new File(tempDir + File.separator + fileName); try { item.write(file); createMedia(request, response, fileName, getUserInSession(request).getId(), componentId, albumId, file, false, "", "", true); } catch (Exception e) { e.printStackTrace(); } } } } private Photo getPicture(String pictureId) throws Exception { Photo photoDetail = getGalleryService().getPhoto(new MediaPK(pictureId)); return photoDetail; } private GalleryService getGalleryService() throws Exception { return MediaServiceProvider.getMediaService(); } private String createMedia(HttpServletRequest request, HttpServletResponse response, String name, String userId, String componentId, String albumId, File file, boolean watermark, String watermarkHD, String watermarkOther, boolean download) throws Exception { // cration de la photo String type = new MimetypesFileTypeMap().getContentType(file); List<FileItem> parameters = new ArrayList<FileItem>(); LocalDiskFileItem item = new LocalDiskFileItem(file, type); parameters.add(item); MediaDataCreateDelegate delegate = null; if (type.contains("image")) { delegate = new MediaDataCreateDelegate(MediaType.Photo, "fr", albumId, parameters); } if (type.contains("audio")) { delegate = new MediaDataCreateDelegate(MediaType.Sound, "fr", albumId, parameters); } else if (type.contains("video")) { parameters.clear(); parameters.add(new LocalDiskFileItem( MediaHelper.optimizeVideoForWeb(file, request.getSession().getId()), type)); delegate = new MediaDataCreateDelegate(MediaType.Video, "fr", albumId, parameters); } else if (type.contains("octet-stream")) { if (file.getName().endsWith(".mp3")) { delegate = new MediaDataCreateDelegate(MediaType.Sound, "fr", albumId, parameters); } else if (file.getName().endsWith(".mp4")) { parameters.clear(); parameters.add(new LocalDiskFileItem( MediaHelper.optimizeVideoForWeb(file, request.getSession().getId()), type)); delegate = new MediaDataCreateDelegate(MediaType.Video, "fr", albumId, parameters); } } //TODO : use right language if (delegate == null) { response.sendError(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE); return null; } Media newMedia = getGalleryService().createMedia(getUserInSession(request), componentId, GalleryComponentSettings.getWatermark(componentId), delegate); return newMedia.getId(); } }