Here you can find the source of getText(final Node node)
public static String getText(final Node node)
//package com.java2s; // Licensed under the MIT license. See License.txt in the project root. import org.w3c.dom.Document; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import javax.xml.transform.OutputKeys; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import java.io.ByteArrayOutputStream; public class Main { public static String getText(final Node node) { final StringBuilder result = new StringBuilder(); if (!node.hasChildNodes()) return ""; final NodeList list = node.getChildNodes(); for (int i = 0; i < list.getLength(); i++) { Node subnode = list.item(i); if (subnode.getNodeType() == Node.TEXT_NODE) { result.append(subnode.getNodeValue()); } else if (subnode.getNodeType() == Node.CDATA_SECTION_NODE) { result.append(subnode.getNodeValue()); } else if (subnode.getNodeType() == Node.ENTITY_REFERENCE_NODE) { // Recurse into the subtree for text // (and ignore comments) result.append(getText(subnode)); }//ww w . j ava2 s .c o m } return result.toString(); } public static String toString(final Document document) { try { final ByteArrayOutputStream baos = new ByteArrayOutputStream(); final TransformerFactory tf = TransformerFactory.newInstance(); final Transformer transformer = tf.newTransformer(); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); transformer.setOutputProperty(OutputKeys.STANDALONE, "yes"); //http://johnsonsolutions.blogspot.ca/2007/08/xml-transformer-indent-doesnt-work-with.html transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4"); transformer.transform(new DOMSource(document), new StreamResult(baos)); final String result = baos.toString(); return result; } catch (final TransformerException e) { throw new Error(e); } } }