Java tutorial
//package com.java2s; import org.w3c.dom.Document; import javax.xml.transform.OutputKeys; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; 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.OutputStream; import java.io.StringWriter; public class Main { public static String doc2str(Document doc) throws TransformerConfigurationException, TransformerException { StreamResult result = new StreamResult(new StringWriter()); doc2stream(doc, result); String xmlString = result.getWriter().toString(); return xmlString; } public static void doc2stream(Document doc, StreamResult result) throws TransformerConfigurationException, TransformerException { Transformer transformer = TransformerFactory.newInstance().newTransformer(); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); DOMSource source = new DOMSource(doc); transformer.transform(source, result); } public static void doc2stream(Document doc, OutputStream out) throws TransformerConfigurationException, TransformerException { doc2stream(doc, new StreamResult(out)); } }