Java tutorial
/* * (c) Copyright 2010-2011 AgileBirds * * This file is part of OpenFlexo. * * OpenFlexo 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. * * OpenFlexo 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>. * */ package org.openflexo.foundation.utils; /* * XMLUtils.java * Project WorkflowEditor * * Created by benoit on Mar 1, 2004 */ import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.nio.charset.Charset; import java.util.Iterator; import java.util.logging.Level; import java.util.logging.Logger; import org.apache.xerces.parsers.DOMParser; import org.jdom2.JDOMException; import org.jdom2.filter.ElementFilter; import org.jdom2.input.DOMBuilder; import org.jdom2.input.SAXBuilder; import org.jdom2.output.Format; import org.jdom2.output.LineSeparator; import org.jdom2.output.XMLOutputter; import org.w3c.dom.Document; import org.w3c.dom.Element; /** * Some static util methods for xml parsing. * * @author benoit, sylvain */ public class XMLUtils { private static final Logger logger = Logger.getLogger(XMLUtils.class.getPackage().getName()); // ========================================================================== // ============================= JDOM ================================ // ========================================================================== public static org.jdom2.Document getJDOMDocument(File f) throws Exception { Document domDoc = parseXMLFile(f); return convertDOMToJDOM(domDoc); } public static org.jdom2.Document getJDOMDocument(InputStream is) throws Exception { Document domDoc = parseXML(is); return convertDOMToJDOM(domDoc); } public static org.jdom2.Document convertDOMToJDOM(Document domDoc) { DOMBuilder jDomBuilder = new DOMBuilder(); org.jdom2.Document jdomDoc = jDomBuilder.build(domDoc); return jdomDoc; } public static boolean saveXMLFile(Document document, File aFile) { return saveXMLFile(convertDOMToJDOM(document), aFile); } public static boolean saveXMLFile(org.jdom2.Document document, File aFile) { try { return saveXMLFile(document, new FileOutputStream(aFile)); } catch (FileNotFoundException e) { e.printStackTrace(); } return false; } public static boolean saveXMLFile(org.jdom2.Document document, OutputStream os) { try { Format prettyFormat = Format.getPrettyFormat(); prettyFormat.setLineSeparator(LineSeparator.SYSTEM); XMLOutputter outputter = new XMLOutputter(prettyFormat); outputter.output(document, os); return true; } catch (Exception e) { // Warns about the exception if (logger.isLoggable(Level.WARNING)) { logger.warning("Exception raised: " + e.getClass().getName() + ". See console for details."); } e.printStackTrace(); } finally { if (os != null) { try { os.close(); } catch (IOException e) { e.printStackTrace(); } } } return false; } // ========================================================================== // ======================= DOM > deprecated ============================= // ========================================================================== public static Element elementFromFilePath(String xmlFilePath) throws Exception { return parseXMLFile(xmlFilePath).getDocumentElement(); } public static Element elementFromFile(File xmlFile) throws Exception { return parseXMLFile(xmlFile).getDocumentElement(); } public static Document parseXMLFile(String xmlFilePath) throws Exception { File f = new File(xmlFilePath); FileInputStream fis = new FileInputStream(f); return parseXML(fis); } public static Document parseXMLFile(File f) throws Exception { FileInputStream fis = new FileInputStream(f); return parseXML(fis); } /** * @param inputStream * @return * @throws Exception * @throws IOException */ private static Document parseXML(InputStream inputStream) throws Exception, IOException { InputStreamReader reader = new InputStreamReader(inputStream, Charset.forName("utf8")); org.xml.sax.InputSource is = new org.xml.sax.InputSource(reader); Document d = parseXMLFile(is); inputStream.close(); return d; } private static Document parseXMLFile(org.xml.sax.InputSource is) throws Exception { DOMParser parser = new DOMParser(); parser.parse(is); Document d = parser.getDocument(); parser.reset(); return d; } public static Element elementFromString(String s) throws Exception { ByteArrayInputStream bis = new ByteArrayInputStream(s.getBytes()); InputStreamReader reader = new InputStreamReader(bis, Charset.forName("utf8")); org.xml.sax.InputSource is = new org.xml.sax.InputSource(reader); // org.xml.sax.InputSource is = new org.xml.sax.InputSource(bis); Element e = parseXMLFile(is).getDocumentElement(); bis.close(); return e; } public static String replaceAllSpecialChar(String s) { s = replaceStringByStringInString("&", "&", s); s = replaceStringByStringInString("\"", """, s); s = replaceStringByStringInString(">", ">", s); s = replaceStringByStringInString("<", "<", s); return s; } public static String replaceStringByStringInString(String replacedString, String aNewString, String message) { // return replaceString(message,replacedString,aNewString); // DON'T WORK FOR (" ","",message) if (message == null || message.equals("")) { return ""; } if (replacedString == null || replacedString.equals("")) { return message; } if (aNewString == null || aNewString.equals("")) { aNewString = ""; } String newString = ""; int replacedStringLength = replacedString.length(); int indexOfTag = message.indexOf(replacedString); while (indexOfTag != -1) { newString = newString + message.substring(0, indexOfTag) + aNewString; message = message.substring(indexOfTag + replacedStringLength); indexOfTag = message.indexOf(replacedString); } return newString + message; } public static org.jdom2.Document readXMLFile(File f) throws JDOMException, IOException { FileInputStream fio = new FileInputStream(f); SAXBuilder parser = new SAXBuilder(); org.jdom2.Document reply = parser.build(fio); return reply; } public static org.jdom2.Element getElement(org.jdom2.Document document, String name) { Iterator it = document.getDescendants(new ElementFilter(name)); if (it.hasNext()) { return (org.jdom2.Element) it.next(); } else { return null; } } public static org.jdom2.Element getElement(org.jdom2.Element from, String name) { Iterator it = from.getDescendants(new ElementFilter(name)); if (it.hasNext()) { return (org.jdom2.Element) it.next(); } else { return null; } } }