How to use

javax.xml.transform.stream.StreamResult

constructor

private static String toString(org.w3c.dom.Node node) {
  try {
    TransformerFactory transFactory = TransformerFactory.newInstance();
    Transformer transformer = transFactory.newTransformer();
    DOMSource domSource = new DOMSource(node);
    StringWriter out = new StringWriter();
    transformer.transform(domSource, new StreamResult(out));
    return out.toString();
  } catch (TransformerException e) {
    throw new JSONException("xml node to string error", e);
  }
}

private static String transform(Transformer transformer, Node element)
  throws TransformerException {
 StreamResult result = new StreamResult(new StringWriter());
 DOMSource source = new DOMSource(element);
 transformer.transform(source, result);
 return result.getWriter().toString();
}

/**
 * 将XML文档写出
 * 
 * @param node {@link Node} XML文档节点或文档本身
 * @param out 写出的Writer，Writer决定了输出XML的编码
 * @param charset 编码
 * @param isPretty 是否格式化输出
 * @since 4.0.8
 */
public static void write(Node node, OutputStream out, String charset, boolean isPretty) {
  transform(new DOMSource(node), new StreamResult(out), charset, isPretty);
}

private String upgrade(String originalContent, URL upgradeScript) {
  try (InputStream xslt = upgradeScript.openStream()) {
    ByteArrayOutputStream convertedConfig = new ByteArrayOutputStream();
    transformer(upgradeScript.getPath(), xslt)
        .transform(new StreamSource(new ByteArrayInputStream(originalContent.getBytes())), new StreamResult(convertedConfig));
    return convertedConfig.toString();
  } catch (TransformerException e) {
    throw bomb("Couldn't transform configuration file using upgrade script " + upgradeScript.getPath(), e);
  } catch (IOException e) {
    throw bomb("Couldn't write converted config file", e);
  }
}

 Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
//initialize StreamResult with File object to save to file
StreamResult result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(doc);
transformer.transform(source, result);
String xmlString = result.getWriter().toString();
System.out.println(xmlString);

private void transform(Document doc) {
  DOMSource source = new DOMSource(doc);
  this.setWriter(new StringWriter());
  StreamResult result = new StreamResult(this.outputWriter);
  try {
    transformer.transform(source, result);
  } catch (TransformerException e) {
    e.printStackTrace();
  }
}

/**
 * 将XML文档写出
 * 
 * @param node {@link Node} XML文档节点或文档本身
 * @param writer 写出的Writer，Writer决定了输出XML的编码
 * @param isPretty 是否格式化输出
 * @since 3.0.9
 */
public static void write(Node node, Writer writer, boolean isPretty) {
  transform(new DOMSource(node), new StreamResult(writer), null, isPretty);
}

@Test
public void streamReaderSourceToStreamResult() throws Exception {
  XMLStreamReader streamReader = inputFactory.createXMLStreamReader(new StringReader(XML));
  StaxSource source = new StaxSource(streamReader);
  assertEquals("Invalid streamReader returned", streamReader, source.getXMLStreamReader());
  assertNull("EventReader returned", source.getXMLEventReader());
  StringWriter writer = new StringWriter();
  transformer.transform(source, new StreamResult(writer));
  assertThat("Invalid result", writer.toString(), isSimilarTo(XML));
}

 TransformerFactory transFactory = TransformerFactory.newInstance();
Transformer transformer = transFactory.newTransformer();
StringWriter buffer = new StringWriter();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
transformer.transform(new DOMSource(node),
   new StreamResult(buffer));
String str = buffer.toString();

public void createXml(OutputStream os) throws TransformerException, ParserConfigurationException {
  final DOMSource source = new DOMSource(getDocument());
  final StreamResult scrResult = new StreamResult(os);
  getTransformer().transform(source, scrResult);
}

/**
 * 将XML文档写出
 * 
 * @param node {@link Node} XML文档节点或文档本身
 * @param out 写出的Writer，Writer决定了输出XML的编码
 * @param charset 编码
 * @param isPretty 是否格式化输出
 * @since 4.0.8
 */
public static void write(Node node, OutputStream out, String charset, boolean isPretty) {
  transform(new DOMSource(node), new StreamResult(out), charset, isPretty);
}

@Test
public void eventReaderSourceToStreamResult() throws Exception {
  XMLEventReader eventReader = inputFactory.createXMLEventReader(new StringReader(XML));
  StaxSource source = new StaxSource(eventReader);
  assertEquals("Invalid eventReader returned", eventReader, source.getXMLEventReader());
  assertNull("StreamReader returned", source.getXMLStreamReader());
  StringWriter writer = new StringWriter();
  transformer.transform(source, new StreamResult(writer));
  assertThat("Invalid result", writer.toString(), isSimilarTo(XML));
}

 TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
StringWriter writer = new StringWriter();
transformer.transform(new DOMSource(doc), new StreamResult(writer));
String output = writer.getBuffer().toString().replaceAll("\n|\r", "");

/**
 * 将XML文档写出
 * 
 * @param node {@link Node} XML文档节点或文档本身
 * @param writer 写出的Writer，Writer决定了输出XML的编码
 * @param isPretty 是否格式化输出
 * @since 3.0.9
 */
public static void write(Node node, Writer writer, boolean isPretty) {
  transform(new DOMSource(node), new StreamResult(writer), null, isPretty);
}

 public static void printDocument(Document doc, OutputStream out) throws IOException, TransformerException {
  TransformerFactory tf = TransformerFactory.newInstance();
  Transformer transformer = tf.newTransformer();
  transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
  transformer.setOutputProperty(OutputKeys.METHOD, "xml");
  transformer.setOutputProperty(OutputKeys.INDENT, "yes");
  transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
  transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");

  transformer.transform(new DOMSource(doc), 
     new StreamResult(new OutputStreamWriter(out, "UTF-8")));
}

/**
 *
 * @param file File to save Document to (ie AndroidManifest.xml)
 * @param doc Document being saved
 * @throws IOException
 * @throws SAXException
 * @throws ParserConfigurationException
 * @throws TransformerException
 */
private static void saveDocument(File file, Document doc)
    throws IOException, SAXException, ParserConfigurationException, TransformerException {
  TransformerFactory transformerFactory = TransformerFactory.newInstance();
  Transformer transformer = transformerFactory.newTransformer();
  DOMSource source = new DOMSource(doc);
  StreamResult result = new StreamResult(file);
  transformer.transform(source, result);
}

 TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
StringWriter writer = new StringWriter();
transformer.transform(new DOMSource(doc), new StreamResult(writer));

private void writeToFile(File template, Document document) throws Exception {
 Transformer transformer = TransformerFactory.newInstance().newTransformer();
 transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
 DOMSource source = new DOMSource(document);
 StreamResult result = new StreamResult(template);
 transformer.transform(source, result);
}

private void writeToFile(File template, Document document) throws TransformerException {
 Transformer transformer = TransformerFactory.newInstance().newTransformer();
 transformer.setOutputProperty(OutputKeys.INDENT, "yes");
 transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
 DOMSource source = new DOMSource(document);
 StreamResult result = new StreamResult(template);
 transformer.transform(source, result);
}

final public void transformerXml(OutputStream os) throws TransformerException, ParserConfigurationException {
  final Source source = new DOMSource(document);
  final Result resultat = new StreamResult(os);
  final TransformerFactory fabrique = TransformerFactory.newInstance();
  final Transformer transformer = fabrique.newTransformer();
  transformer.setOutputProperty(OutputKeys.INDENT, "yes");
  // transformer.setOutputProperty(OutputKeys.ENCODING, "ISO-8859-1");
  transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
  // tf.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
  transformer.transform(source, resultat);
}