org.w3c.dom.ls.LSSerializer Java Examples

public static String format(String xml) {

        try {
            final InputSource src = new InputSource(new StringReader(xml));
            final Node document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src).getDocumentElement();
            final Boolean keepDeclaration = Boolean.valueOf(xml.startsWith("<?xml"));

            //May need this: System.setProperty(DOMImplementationRegistry.PROPERTY,"com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");


            final DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
            final DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
            final LSSerializer writer = impl.createLSSerializer();

            writer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE); // Set this to true if the output needs to be beautified.
            writer.getDomConfig().setParameter("xml-declaration", keepDeclaration); // Set this to true if the declaration is needed to be outputted.

            return writer.writeToString(document);
        } catch (Exception e) {
            return xml;
        }
    }
 

/**
 * Serializing a SAML2 object into a String
 *
 * @param xmlObject object that needs to serialized.
 * @return serialized object
 * @throws SAMLSSOException
 */
public static String marshall(XMLObject xmlObject) throws SAMLSSOException {
    try {

        System.setProperty("javax.xml.parsers.DocumentBuilderFactory",
                "org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");

        MarshallerFactory marshallerFactory = org.opensaml.xml.Configuration
                .getMarshallerFactory();
        Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
        Element element = marshaller.marshall(xmlObject);

        ByteArrayOutputStream byteArrayOutputStrm = new ByteArrayOutputStream();
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();
        LSOutput output = impl.createLSOutput();
        output.setByteStream(byteArrayOutputStrm);
        writer.write(element, output);
        return byteArrayOutputStrm.toString();
    } catch (Exception e) {
        log.error("Error Serializing the SAML Response");
        throw new SAMLSSOException("Error Serializing the SAML Response", e);
    }
}
 

/**
 * Serialize XML objects
 *
 * @param xmlObject : XACML or SAML objects to be serialized
 * @return serialized XACML or SAML objects
 */
private String marshall(XMLObject xmlObject) throws EntitlementProxyException {

    try {
        doBootstrap();
        System.setProperty(DOCUMENT_BUILDER_FACTORY, DOCUMENT_BUILDER_FACTORY_IMPL);

        MarshallerFactory marshallerFactory = org.opensaml.xml.Configuration.getMarshallerFactory();
        Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
        Element element = marshaller.marshall(xmlObject);

        ByteArrayOutputStream byteArrayOutputStrm = new ByteArrayOutputStream();
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();
        LSOutput output = impl.createLSOutput();
        output.setByteStream(byteArrayOutputStrm);
        writer.write(element, output);
        return new String(byteArrayOutputStrm.toByteArray(), Charset.forName("UTF-8"));
    } catch (Exception e) {
        log.error("Error Serializing the SAML Response");
        throw new EntitlementProxyException("Error Serializing the SAML Response", e);
    }
}
 

/**
 * Obtain a the DOM, level 3, Load/Save serializer {@link LSSerializer} instance from the
 * given {@link DOMImplementationLS} instance.
 * 
 * <p>
 * The serializer instance will be configured with the parameters passed as the <code>serializerParams</code>
 * argument. It will also be configured with an {@link LSSerializerFilter} that shows all nodes to the filter, 
 * and accepts all nodes shown.
 * </p>
 * 
 * @param domImplLS the DOM Level 3 Load/Save implementation to use
 * @param serializerParams parameters to pass to the {@link DOMConfiguration} of the serializer
 *         instance, obtained via {@link LSSerializer#getDomConfig()}. May be null.
 *         
 * @return a new LSSerializer instance
 */
public static LSSerializer getLSSerializer(DOMImplementationLS domImplLS, Map<String, Object> serializerParams) {
    LSSerializer serializer = domImplLS.createLSSerializer();
    
    serializer.setFilter(new LSSerializerFilter() {

        public short acceptNode(Node arg0) {
            return FILTER_ACCEPT;
        }

        public int getWhatToShow() {
            return SHOW_ALL;
        }
    });
    
    
    if (serializerParams != null) {
        DOMConfiguration serializerDOMConfig = serializer.getDomConfig();
        for (String key : serializerParams.keySet()) {
            serializerDOMConfig.setParameter(key, serializerParams.get(key));
        }
    }
    
    return serializer;
}
 

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document document = builder.newDocument();

    DOMImplementation impl = document.getImplementation();
    DOMImplementationLS implLS = (DOMImplementationLS) impl.getFeature("LS", "3.0");
    LSSerializer dsi = implLS.createLSSerializer();

    /* We should have here incorrect document without getXmlVersion() method:
     * Such Document is generated by replacing the JDK bootclasses with it's
     * own Node,Document and DocumentImpl classes (see run.sh). According to
     * XERCESJ-1007 the AbstractMethodError should be thrown in such case.
     */
    String result = dsi.writeToString(document);
    System.out.println("Result:" + result);
}
 

/**
 * Writes a DOM Document to the given OutputStream using the "UTF-8"
 * encoding. The XML declaration is omitted.
 * 
 * @param outStream
 *            The destination OutputStream object.
 * @param doc
 *            A Document node.
 */
void writeDocument(OutputStream outStream, Document doc) {
    DOMImplementationRegistry domRegistry = null;
    try {
        domRegistry = DOMImplementationRegistry.newInstance();
    // Fortify Mod: Broaden try block to capture all potential exceptions
    // } catch (Exception e) {
    //    LOGR.warning(e.getMessage());
    // }
    DOMImplementationLS impl = (DOMImplementationLS) domRegistry
            .getDOMImplementation("LS");
    LSSerializer writer = impl.createLSSerializer();
    writer.getDomConfig().setParameter("xml-declaration", false);
    writer.getDomConfig().setParameter("format-pretty-print", true);
    LSOutput output = impl.createLSOutput();
    output.setEncoding("UTF-8");
    output.setByteStream(outStream);
    writer.write(doc, output);
    } catch (Exception e) {
        LOGR.warning(e.getMessage());
    }
}
 

/**
 * Serializing a SAML2 object into a String
 *
 * @param xmlObject object that needs to serialized.
 * @return serialized object
 * @throws Exception
 */
public static String marshall(XMLObject xmlObject) throws Exception {
    try {
        doBootstrap();
        System.setProperty("javax.xml.parsers.DocumentBuilderFactory",
                "org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");

        MarshallerFactory marshallerFactory = XMLObjectProviderRegistrySupport.getMarshallerFactory();
        Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
        Element element = marshaller.marshall(xmlObject);

        ByteArrayOutputStream byteArrayOutputStrm = new ByteArrayOutputStream();
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl =
                (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();
        LSOutput output = impl.createLSOutput();
        output.setByteStream(byteArrayOutputStrm);
        writer.write(element, output);
        return byteArrayOutputStrm.toString();
    } catch (Exception e) {
        throw new Exception("Error Serializing the SAML Response", e);
    }
}
 

/**
 * Check for DOMErrorHandler handling DOMError. Before fix of bug 4890927
 * DOMConfiguration.setParameter("well-formed",true) throws an exception.
 *
 * @throws Exception If any errors occur.
 */
@Test
public void testCreateNewItem2Sell() throws Exception {
    String xmlFile = XML_DIR + "novelsInvalid.xml";

    Document document = DocumentBuilderFactory.newInstance()
            .newDocumentBuilder().parse(xmlFile);

    document.getDomConfig().setParameter("well-formed", true);

    DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
    DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
    MyDOMOutput domOutput = new MyDOMOutput();
    domOutput.setByteStream(System.out);
    LSSerializer writer = impl.createLSSerializer();
    writer.write(document, domOutput);
}
 

/**
 * Check for DOMErrorHandler handling DOMError. Before fix of bug 4896132
 * test throws DOM Level 1 node error.
 *
 * @throws Exception If any errors occur.
 */
@Test
public void testCreateNewItem2SellRetry() throws Exception  {
    String xmlFile = XML_DIR + "accountInfo.xml";

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setNamespaceAware(true);
    Document document = dbf.newDocumentBuilder().parse(xmlFile);

    DOMConfiguration domConfig = document.getDomConfig();
    MyDOMErrorHandler errHandler = new MyDOMErrorHandler();
    domConfig.setParameter("error-handler", errHandler);

    DOMImplementationLS impl =
         (DOMImplementationLS) DOMImplementationRegistry.newInstance()
                 .getDOMImplementation("LS");
    LSSerializer writer = impl.createLSSerializer();
    MyDOMOutput domoutput = new MyDOMOutput();

    domoutput.setByteStream(System.out);
    writer.write(document, domoutput);

    document.normalizeDocument();
    writer.write(document, domoutput);
    assertFalse(errHandler.isError());
}
 

/**
 * Serialise the given SVG document.
 * @param path The file of the future serialised document.
 * @return True: the document has been successfully saved.
 */
public boolean saveSVGDocument(final String path) {
	if(path == null) {
		return false;
	}

	boolean ok = true;
	try {
		final DOMImplementationLS impl = (DOMImplementationLS) DOMImplementationRegistry.newInstance().getDOMImplementation("XML 3.0 LS 3.0"); //NON-NLS
		final LSSerializer serializer = impl.createLSSerializer();
		serializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE); //NON-NLS
		serializer.getDomConfig().setParameter("namespaces", Boolean.FALSE); //NON-NLS
		final LSOutput output = impl.createLSOutput();
		final Charset charset = Charset.defaultCharset();
		try(final OutputStreamWriter fw = new OutputStreamWriter(Files.newOutputStream(Path.of(path)), charset.newEncoder())) {
			output.setEncoding(charset.name());
			output.setCharacterStream(fw);
			serializer.write(getDocumentElement(), output);
		}
	}catch(final ClassNotFoundException | InstantiationException | IllegalAccessException | ClassCastException | IOException ex) {
		BadaboomCollector.INSTANCE.add(ex);
		ok = false;
	}
	return ok;
}
 

/**
 * Serializing a SAML2 object into a String
 *
 * @param xmlObject object that needs to serialized.
 * @return serialized object
 * @throws SAML2SSOUIAuthenticatorException
 */
public static String marshall(XMLObject xmlObject) throws SAML2SSOUIAuthenticatorException {

    try {
        doBootstrap();
        System.setProperty("javax.xml.parsers.DocumentBuilderFactory",
                "org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");

        MarshallerFactory marshallerFactory = org.opensaml.xml.Configuration
                .getMarshallerFactory();
        Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
        Element element = marshaller.marshall(xmlObject);

        ByteArrayOutputStream byteArrayOutputStrm = new ByteArrayOutputStream();
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();
        LSOutput output = impl.createLSOutput();
        output.setByteStream(byteArrayOutputStrm);
        writer.write(element, output);
        return byteArrayOutputStrm.toString();
    } catch (Exception e) {
        log.error("Error Serializing the SAML Response");
        throw new SAML2SSOUIAuthenticatorException("Error Serializing the SAML Response", e);
    }
}
 

public void load(File f) throws ConfigPersisterException {
    try {
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder = factory.newDocumentBuilder();
		Document doc = builder.parse(f);

		DOMImplementationLS domImplementation = (DOMImplementationLS) doc.getImplementation();
	    LSSerializer lsSerializer = domImplementation.createLSSerializer();
	    String configString = lsSerializer.writeToString(doc);

    	_config = (Config) _xstream.fromXML(convertToCurrent(configString));
    	setConfigPath(f);
	} catch (Exception e) {
		throw new ConfigPersisterException(e);
	}
}
 

/**
 * Saves the process configuration.
 */
private void saveConfiguration(Document docXMLConfig) {
  String fileToSaveConf = properties.getSaveRemoteConfig();
  if (fileToSaveConf.length() > 0 && docXMLConfig != null) {
    log.info("saveConfiguration - saving the process configuration XML in a file " + fileToSaveConf + " due to user request");

    File file = new File(fileToSaveConf);
    if (file.isDirectory() || !fileToSaveConf.endsWith(".xml")) {
      throw new RuntimeException("Path to which to save remote config must end with '.xml'");
    }

    try {
      DOMImplementationLS domImplementation = (DOMImplementationLS) docXMLConfig.getImplementation();
      LSSerializer lsSerializer = domImplementation.createLSSerializer();
      lsSerializer.writeToURI(docXMLConfig, file.toURI().toURL().toString());
    } catch (java.io.IOException ex) {
      log.error("saveConfiguration - Could not save the configuration to the file " + fileToSaveConf, ex);
    }
  }
}
 

public static String toXml(Document domDoc) throws TransformerException {
    DOMImplementation domImplementation = domDoc.getImplementation();
    if (domImplementation.hasFeature("LS", "3.0") && domImplementation.hasFeature("Core", "2.0")) {
        DOMImplementationLS domImplementationLS = (DOMImplementationLS) domImplementation.getFeature("LS", "3.0");
        LSSerializer lsSerializer = domImplementationLS.createLSSerializer();
        DOMConfiguration domConfiguration = lsSerializer.getDomConfig();
        if (domConfiguration.canSetParameter("xml-declaration", Boolean.TRUE))
            lsSerializer.getDomConfig().setParameter("xml-declaration", Boolean.FALSE);
        if (domConfiguration.canSetParameter("format-pretty-print", Boolean.TRUE)) {
            lsSerializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
            LSOutput lsOutput = domImplementationLS.createLSOutput();
            lsOutput.setEncoding("UTF-8");
            StringWriter stringWriter = new StringWriter();
            lsOutput.setCharacterStream(stringWriter);
            lsSerializer.write(domDoc, lsOutput);
            return stringWriter.toString();
        }
    }
    return toXml((Node) domDoc);
}
 

public void load(File f) throws ConfigPersisterException {
    try {
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		DocumentBuilder builder = factory.newDocumentBuilder();
		Document doc = builder.parse(f);

		DOMImplementationLS domImplementation = (DOMImplementationLS) doc.getImplementation();
	    LSSerializer lsSerializer = domImplementation.createLSSerializer();
	    String configString = lsSerializer.writeToString(doc);

    	_config = (Config) _xstream.fromXML(convertToCurrent(configString));
    	setConfigPath(f);
	} catch (Exception e) {
		throw new ConfigPersisterException(e);
	}
}
 

private void format(Document document, Writer writer) {
   DOMImplementation implementation = document.getImplementation();

   if(implementation.hasFeature(LS_FEATURE_KEY, LS_FEATURE_VERSION) && implementation.hasFeature(CORE_FEATURE_KEY, CORE_FEATURE_VERSION)) {
      DOMImplementationLS implementationLS = (DOMImplementationLS) implementation.getFeature(LS_FEATURE_KEY, LS_FEATURE_VERSION);
      LSSerializer serializer = implementationLS.createLSSerializer();
      DOMConfiguration configuration = serializer.getDomConfig();
      
      configuration.setParameter("format-pretty-print", Boolean.TRUE);
      configuration.setParameter("comments", preserveComments);
      
      LSOutput output = implementationLS.createLSOutput();
      output.setEncoding("UTF-8");
      output.setCharacterStream(writer);
      serializer.write(document, output);
   }
}
 

/***
 * Helper method which converts XML Document into pretty formatted string
 *
 * @param doc to convert
 * @return converted XML as String
 */
public static String documentToString(Document doc) {

    String strMsg = "";
    try {
        DOMImplementation domImpl = doc.getImplementation();
        DOMImplementationLS domImplLS = (DOMImplementationLS) domImpl.getFeature("LS", "3.0");
        LSSerializer lsSerializer = domImplLS.createLSSerializer();
        lsSerializer.getDomConfig().setParameter("format-pretty-print", true);

        Writer stringWriter = new StringWriter();
        LSOutput lsOutput = domImplLS.createLSOutput();
        lsOutput.setEncoding("UTF-8");
        lsOutput.setCharacterStream(stringWriter);
        lsSerializer.write(doc, lsOutput);
        strMsg = stringWriter.toString();
    } catch (Exception e) {
        logger.warn("Error occurred when converting document to string", e);
    }
    return strMsg;
}
 

public static String format(String xml) {

        try {
            final InputSource src = new InputSource(new StringReader(xml));
            final Node document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src).getDocumentElement();
            final Boolean keepDeclaration = Boolean.valueOf(xml.startsWith("<?xml"));

            //May need this: System.setProperty(DOMImplementationRegistry.PROPERTY,"com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");


            final DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
            final DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
            final LSSerializer writer = impl.createLSSerializer();

            writer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE); // Set this to true if the output needs to be beautified.
            writer.getDomConfig().setParameter("xml-declaration", keepDeclaration); // Set this to true if the declaration is needed to be outputted.

            return writer.writeToString(document);
        } catch (Exception e) {
            return xml;
        }
    }
 

/**
 * `
 * Serialize XML objects
 *
 * @param xmlObject : XACML or SAML objects to be serialized
 * @return serialized XACML or SAML objects
 * @throws EntitlementException
 */
private String marshall(XMLObject xmlObject) throws EntitlementException {

    try {
        doBootstrap();
        System.setProperty("javax.xml.parsers.DocumentBuilderFactory",
                "org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");

        MarshallerFactory marshallerFactory = org.opensaml.xml.Configuration.getMarshallerFactory();
        Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
        Element element = marshaller.marshall(xmlObject);

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl =
                (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();
        LSOutput output = impl.createLSOutput();
        output.setByteStream(byteArrayOutputStream);
        writer.write(element, output);
        return byteArrayOutputStream.toString();
    } catch (Exception e) {
        log.error("Error Serializing the SAML Response");
        throw new EntitlementException("Error Serializing the SAML Response", e);
    }
}
 

/**
 * `
 * Serialize XML objects
 *
 * @param xmlObject : XACML or SAML objects to be serialized
 * @return serialized XACML or SAML objects
 * @throws EntitlementException
 */
private String marshall(XMLObject xmlObject) throws EntitlementException {

    try {
        doBootstrap();
        System.setProperty("javax.xml.parsers.DocumentBuilderFactory",
                "org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");

        MarshallerFactory marshallerFactory = XMLObjectProviderRegistrySupport.getMarshallerFactory();
        Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
        Element element = marshaller.marshall(xmlObject);

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl =
                (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();
        LSOutput output = impl.createLSOutput();
        output.setByteStream(byteArrayOutputStream);
        writer.write(element, output);
        return byteArrayOutputStream.toString();
    } catch (Exception e) {
        log.error("Error Serializing the SAML Response");
        throw new EntitlementException("Error Serializing the SAML Response", e);
    }
}
 

public static String elementToString(Element element) {
	try {
		if (element == null) {
                               /* return an empty string because, the other way around works the same,
                               where if we give a empty string as the XML, we get a null element
                               from "stringToElement" */
			return "";
		}
           Document document = element.getOwnerDocument();
           DOMImplementationLS domImplLS = (DOMImplementationLS) document.getImplementation();
           LSSerializer serializer = domImplLS.createLSSerializer();
           //by default its true, so set it to false to get String without xml-declaration
           serializer.getDomConfig().setParameter(XML_DECLARATION, false);
           return serializer.writeToString(element);
	} catch (Exception e) {
		log.error("Error while convering element to string: " + e.getMessage(), e);
		return null;
	}
}
 

protected void printResponse() {
    try {
        DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
        DOMImplementationLS ls = (DOMImplementationLS)docBuilder.getDOMImplementation();
        LSSerializer lss = ls.createLSSerializer();
        System.out.println(lss.writeToString(_docResponse));
    } catch (ParserConfigurationException e) {
        s_logger.error("Error parsing the repsonse : " + e.toString());
    }
}
 

private static String format(Element data) {
    LSSerializer ser = ((DOMImplementationLS) data.getOwnerDocument().getImplementation().getFeature("LS", "3.0")).createLSSerializer();
    try {
        ser.getDomConfig().setParameter("format-pretty-print", true);
        ser.getDomConfig().setParameter("xml-declaration", false);
    } catch (DOMException ignore) {}
    return ser.writeToString(data);
}
 

private String prettyPrint(Element node) throws InstantiationException, IllegalAccessException, ClassNotFoundException {
    DOMImplementationRegistry domImplementationRegistry = DOMImplementationRegistry.newInstance();
    DOMImplementationLS domImplementationLS = (DOMImplementationLS) domImplementationRegistry.getDOMImplementation("LS");
    LSOutput lsOutput = domImplementationLS.createLSOutput();
    LSSerializer lsSerializer = domImplementationLS.createLSSerializer();
    lsOutput.setEncoding("UTF-8");
    Writer stringWriter = new StringWriter();
    lsOutput.setCharacterStream(stringWriter);
    lsSerializer.write(node, lsOutput);
    String result = stringWriter.toString();
    return result;
}
 

private static String serializeTransformElement(Element xformEl) throws DOMException, LSException {
                Document document = xformEl.getOwnerDocument();
                DOMImplementationLS domImplLS = (DOMImplementationLS) document.getImplementation();
                LSSerializer serializer = domImplLS.createLSSerializer();
//        serializer.getDomConfig().setParameter("namespaces", true);
//        serializer.getDomConfig().setParameter("namespace-declarations", true);
                serializer.getDomConfig().setParameter("canonical-form", false);
                serializer.getDomConfig().setParameter("xml-declaration", false);
                String str = serializer.writeToString(xformEl);
                return str;
        }
 

private String innerXml(Node node) {
    DOMImplementationLS lsImpl = (DOMImplementationLS) node.getOwnerDocument().getImplementation().getFeature("LS", "3.0");
    LSSerializer lsSerializer = lsImpl.createLSSerializer();
    NodeList childNodes = node.getChildNodes();
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < childNodes.getLength(); i++) {
        String str = lsSerializer.writeToString(childNodes.item(i));
        if (str.endsWith("<br/>")) {
            str = "\n";
        }
        sb.append(str);
    }
    return sb.toString().replaceAll("<\\?xml.*\\?>", "");
}
 

/**
 * Writes a Node out to a Writer using the DOM, level 3, Load/Save serializer. The written content is encoded using
 * the encoding specified in the writer configuration.
 *
 * @param node the node to write out
 * @param output the writer to write the XML to
 * @param serializerParams parameters to pass to the {@link DOMConfiguration} of the serializer
 *         instance, obtained via {@link LSSerializer#getDomConfig()}. May be null.
 */
public static void writeNode(Node node, Writer output, Map<String, Object> serializerParams) {
  DOMImplementationLS domImplLS = getLSDOMImpl(node);

  LSSerializer serializer = getLSSerializer(domImplLS, serializerParams);

  LSOutput serializerOut = domImplLS.createLSOutput();
  serializerOut.setCharacterStream(output);

  serializer.write(node, serializerOut);
}
 

/**
 * Obtain a the DOM, level 3, Load/Save serializer {@link LSSerializer} instance from the
 * given {@link DOMImplementationLS} instance.
 *
 * <p>
 * The serializer instance will be configured with the parameters passed as the <code>serializerParams</code>
 * argument. It will also be configured with an {@link LSSerializerFilter} that shows all nodes to the filter,
 * and accepts all nodes shown.
 * </p>
 *
 * @param domImplLS the DOM Level 3 Load/Save implementation to use
 * @param serializerParams parameters to pass to the {@link DOMConfiguration} of the serializer
 *         instance, obtained via {@link LSSerializer#getDomConfig()}. May be null.
 *
 * @return a new LSSerializer instance
 */
public static LSSerializer getLSSerializer(
    DOMImplementationLS domImplLS, Map<String, Object> serializerParams) {
  LSSerializer serializer = domImplLS.createLSSerializer();

  serializer.setFilter(
      new LSSerializerFilter() {

        @Override
        public short acceptNode(Node arg0) {
          return FILTER_ACCEPT;
        }

        @Override
        public int getWhatToShow() {
          return SHOW_ALL;
        }
      });

  if (serializerParams != null) {
    DOMConfiguration serializerDOMConfig = serializer.getDomConfig();
    for (String key : serializerParams.keySet()) {
      serializerDOMConfig.setParameter(key, serializerParams.get(key));
    }
  }

  return serializer;
}
 

/**
 * Checking for namespace normalization.
 * @see <a href="content/screenName.xml">screenName.xml</a> has prefix of
 * userName is bound to "http://hibid.com/user" namespace normalization
 * will create a namespace of prefix us and attach userEmail.
 *
 * @throws Exception If any errors occur.
 */
@Test
public void testCheckScreenNameExists() throws Exception {
    String resultFile = USER_DIR + "screenName.out";
    String xmlFile = XML_DIR + "screenName.xml";
    String goldFile = GOLDEN_DIR + "screenNameGold.xml";

    String nsTagName = "http://hibid.com/screenName";
    String userNs = "http://hibid.com/user";

    try (FileOutputStream output = new FileOutputStream(resultFile)) {
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = impl.createLSSerializer();
        LSParser builder = impl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);
        Document document = builder.parseURI(xmlFile);
        NodeList nl = document.getElementsByTagNameNS(nsTagName, "screen-name");
        assertEquals(nl.getLength(), 1);
        Element screenName = (Element)nl.item(0);
        Element userEmail = document.createElementNS(userNs, "userEmail");
        assertTrue(userEmail.isDefaultNamespace(userNs));

        Text email = document.createTextNode("[email protected]");
        userEmail.appendChild(email);
        screenName.appendChild(userEmail);
        document.normalizeDocument();

        MyDOMOutput domoutput = new MyDOMOutput();
        domoutput.setByteStream(output);
        writer.write(document, domoutput);
    }
    assertTrue(compareDocumentWithGold(goldFile, resultFile));
}
 

/**
	 * from: https://stackoverflow.com/questions/139076/how-to-pretty-print-xml-from-java
	 * @param xml The string representation of the unformatted XML
	 * @return The string representation of the formatted XML
	 * @throws ClassCastException 
	 * @throws IllegalAccessException 
	 * @throws InstantiationException 
	 * @throws ClassNotFoundException 
	 * @throws ParserConfigurationException 
	 * @throws IOException 
	 * @throws SAXException 
	 * @deprecated does it work with correct encoding?
	 */
	public static String formatXml(String xml) throws ClassNotFoundException, InstantiationException, IllegalAccessException, ClassCastException, SAXException, IOException, ParserConfigurationException {
//		try {
			final InputSource src = new InputSource(new StringReader(xml));
			final Node document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src)
					.getDocumentElement();
			final Boolean keepDeclaration = Boolean.valueOf(xml.startsWith("<?xml"));

			// May need this:
			// System.setProperty(DOMImplementationRegistry.PROPERTY,"com.sun.org.apache.xerces.internal.dom.DOMImplementationSourceImpl");

			final DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
			final DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
			final LSSerializer writer = impl.createLSSerializer();

			writer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE); // Set this to true if the output
																						// needs to be beautified.
			writer.getDomConfig().setParameter("xml-declaration", keepDeclaration); // Set this to true if the
																					// declaration is needed to be
																					// outputted.
			             
			LSOutput lsOutput = impl.createLSOutput();
			lsOutput.setEncoding("UTF-8");
			             StringWriter stringWriter = new StringWriter();
			             lsOutput.setCharacterStream(stringWriter);
			             writer.write(document, lsOutput);
			             return stringWriter.toString();

//			return writer.writeToString(document);
//		} catch (Exception e) {
//			throw new RuntimeException(e);
//		}
	}