Here you can find the source of toXMLString(Node node)
public static String toXMLString(Node node) throws Exception
//package com.java2s; /*//w ww . j a v a 2 s .c o m * * This 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 2.1 of * the License, or (at your option) any later version. * * This software 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import java.io.ByteArrayOutputStream; import java.io.OutputStream; import org.w3c.dom.Node; import org.w3c.dom.bootstrap.DOMImplementationRegistry; import org.w3c.dom.ls.DOMImplementationLS; import org.w3c.dom.ls.LSOutput; import org.w3c.dom.ls.LSSerializer; public class Main { public static String toXMLString(Node node) throws Exception { ByteArrayOutputStream baos = new ByteArrayOutputStream(); writeToStream(baos, node); return new String(baos.toByteArray(), "UTF-8"); } public static void writeToStream(OutputStream os, Node node) throws Exception { DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance(); DOMImplementationLS domImpl = (DOMImplementationLS) registry.getDOMImplementation("LS"); LSSerializer serializer = domImpl.createLSSerializer(); // LSOutput lso = domImpl.createLSOutput(); lso.setByteStream(os); lso.setEncoding("UTF-8"); serializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE); serializer.write(node, lso); } }