Java XML Format formatXML(String unformatted)

Description

format XML

License

Open Source License

Declaration

public static String formatXML(String unformatted)
            throws SAXException, IOException, TransformerException, ParserConfigurationException 

Method Source Code

//package com.java2s;
/*/*ww w. java2 s.c o  m*/
 * #%L
 * OpenNaaS :: Core :: Resources
 * %%
 * Copyright (C) 2007 - 2014 Fundaci? Privada i2CAT, Internet i Innovaci? a Catalunya
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.xml.sax.SAXException;

public class Main {
    public static String formatXML(String unformatted)
            throws SAXException, IOException, TransformerException, ParserConfigurationException {

        if (unformatted == null)
            return null;

        // remove whitespaces between xml tags
        String unformattedNoWhiteSpaces = unformatted.toString().replaceAll(">[\\s]+<", "><");

        // Instantiate transformer input
        Source xmlInput = new StreamSource(new StringReader(unformattedNoWhiteSpaces));
        StreamResult xmlOutput = new StreamResult(new StringWriter());

        // Configure transformer
        Transformer transformer = TransformerFactory.newInstance().newTransformer();
        transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

        transformer.transform(xmlInput, xmlOutput);
        String formatted = xmlOutput.getWriter().toString();

        return formatted;
    }
}

Related

1. format(Node node, String indent)
2. format(String unformattedXml)
3. formatAttributes(Node node)
4. formattedPrint(Node xml, OutputStream out)
5. formatXML(byte[] xmlData, int indent)
6. formatXml(String xml)
7. formatXML(String xml)
8. formatXml(String xml)
9. formatXML(Transformer transformer)