Java tutorial
//package com.java2s; import java.io.StringWriter; import javax.xml.transform.OutputKeys; import javax.xml.transform.Result; 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 org.w3c.dom.Document; public class Main { /** * Convert the document to an array of bytes. * * @param doc The XML document. * @param encoding The encoding of the output data. * * @return The XML document as an array of bytes. * * @throws TransformerException If there is an error transforming to text. */ public static byte[] asByteArray(Document doc, String encoding) throws TransformerException { Transformer transformer = TransformerFactory.newInstance().newTransformer(); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); transformer.setOutputProperty(OutputKeys.ENCODING, encoding); transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes"); StringWriter writer = new StringWriter(); Result result = new StreamResult(writer); DOMSource source = new DOMSource(doc); transformer.transform(source, result); return writer.getBuffer().toString().getBytes(); } }