Java tutorial
/* Copyright (C) 2016 maik.jablonski@jease.org This program is free software: you can redistribute it and/or modify it under the terms of the GNU 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package jease.cms.service; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Date; import jease.cmf.domain.Node; import jease.cmf.domain.NodeException; import jease.cmf.service.Filenames; import jease.cmf.service.Nodes; import jease.cms.domain.Content; import jease.cms.domain.Document; import jease.cms.domain.File; import jease.cms.domain.Folder; import jease.cms.domain.Image; import jease.cms.domain.Text; import jease.cms.domain.User; import jfix.util.MimeTypes; import jfix.util.Urls; import jfix.util.Zipfiles; import jfix.util.Zipfiles.EntryHandler; import org.apache.commons.io.FilenameUtils; import org.apache.commons.io.IOUtils; import org.apache.commons.lang3.StringUtils; /** * Service to import single files or whole file-systems (as zipped files which * will be automatically unzipped) into Jease. */ public class Imports { public static void fromFile(final java.io.File file, final Node parent, final User editor) throws Exception { if (MimeTypes.guessContentTypeFromName(file.getName()).equals("application/zip")) { final StringBuilder errors = new StringBuilder(); Zipfiles.unzip(file, new EntryHandler() { public void process(String path, String entryName, InputStream inputStream) throws Exception { try { if (StringUtils.isNotBlank(path)) { makeFolders(parent, path, editor); } if (inputStream != null) { Imports.fromInputStream(entryName, inputStream, parent.getChild(Filenames.asId(path)), editor); } } catch (NodeException e) { errors.append(e.getMessage()).append(": ").append(path).append("/").append(entryName) .append("\n"); } } }); if (errors.length() != 0) { throw new Exception(errors.toString()); } } else { InputStream inputStream = new FileInputStream(file); Imports.fromInputStream(file.getName(), inputStream, parent, editor); inputStream.close(); } } private static void makeFolders(Node relativeRoot, String path, User editor) throws NodeException { Node node = relativeRoot.getChild(Filenames.asId(path)); if (node == null) { int lastSlash = path.lastIndexOf("/"); if (lastSlash != -1) { String parentPath = path.substring(0, lastSlash); String filename = path.substring(lastSlash + 1, path.length()); makeFolders(relativeRoot, parentPath, editor); Folder newFolder = newFolder(filename); newFolder.setEditor(editor); if (editor.getRole().containsType(newFolder.getClass())) { Nodes.append(relativeRoot.getChild(Filenames.asId(parentPath)), newFolder); } else { throw new NodeException.IllegalNesting(); } } else { Folder newFolder = newFolder(path); newFolder.setEditor(editor); if (editor.getRole().containsType(newFolder.getClass())) { Nodes.append(relativeRoot, newFolder); } else { throw new NodeException.IllegalNesting(); } } } else { if (!(node instanceof Folder)) { throw new NodeException.IllegalNesting(); } } } public static void fromInputStream(String filename, InputStream inputStream, Node parent, User editor) throws Exception { Content newContent = newContent(filename, inputStream, editor); newContent.setEditor(editor); Nodes.append(parent, Contents.customize(newContent)); } private static Content newContent(String filename, InputStream inputStream, User editor) throws NodeException, IOException { String contentType = MimeTypes.guessContentTypeFromName(filename); if (editor.getRole().containsType(Text.class) && contentType.startsWith("text/html")) { return newText(filename, inputStream); } else if (editor.getRole().containsType(Image.class) && contentType.startsWith("image/")) { return newImage(filename, inputStream); } else if (editor.getRole().containsType(Document.class) && filename.matches(".+\\.(csv|doc|docx|odp|ods|odt|pdf|ppt|pps|rtf|sxi|sxw|sxc|txt|xls|xlsx)$")) { return newDocument(filename, inputStream); } else if (editor.getRole().containsType(File.class)) { return newFile(filename, inputStream); } else { throw new NodeException.IllegalNesting(); } } private static Folder newFolder(String filename) { Folder folder = new Folder(); folder.setId(Filenames.asId(filename)); folder.setTitle(filename); folder.setLastModified(new Date()); return folder; } private static Text newText(String filename, InputStream inputStream) throws IOException { Text text = new Text(); text.setId(Filenames.asId(filename)); text.setTitle(FilenameUtils.removeExtension(filename)); text.setLastModified(new Date()); text.setContent(IOUtils.toString(inputStream, "UTF-8")); text.setPlain(true); return text; } private static Image newImage(String filename, InputStream inputStream) throws IOException { Image image = new Image(); image.setId(Filenames.asId(filename)); image.setTitle(FilenameUtils.removeExtension(filename)); image.setLastModified(new Date()); image.setContentType(MimeTypes.guessContentTypeFromName(filename)); copyStreamToFile(inputStream, image.getFile()); return image; } private static Document newDocument(String filename, InputStream inputStream) throws IOException { Document document = new Document(); document.setId(Filenames.asId(filename)); document.setTitle(FilenameUtils.removeExtension(filename)); document.setLastModified(new Date()); document.setContentType(MimeTypes.guessContentTypeFromName(filename)); copyStreamToFile(inputStream, document.getFile()); // Trigger conversion to plain text document.getText(); return document; } private static File newFile(String filename, InputStream inputStream) throws IOException { File file = new File(); file.setId(Filenames.asId(filename)); file.setTitle(FilenameUtils.removeExtension(filename)); file.setLastModified(new Date()); file.setContentType(MimeTypes.guessContentTypeFromName(filename)); copyStreamToFile(inputStream, file.getFile()); return file; } private static void copyStreamToFile(InputStream inputStream, java.io.File file) throws IOException { OutputStream outputStream = new FileOutputStream(file); IOUtils.copy(inputStream, outputStream); outputStream.close(); } }