Java 类org.w3c.dom.ls.LSSerializer 实例源码

private void validateXmlResult(Element resultXml) throws KalturaApiException {

        Element resultElement = null;
        try {
            resultElement = XmlUtils.getElementByXPath(resultXml, "/xml/result");
        } catch (XPathExpressionException xee) {
            // AZ (unicon) - necessary in order to debug 
            String resultXmlStr;
            try {
                Document document = resultXml.getOwnerDocument();
                DOMImplementationLS domImplLS = (DOMImplementationLS) document.getImplementation();
                LSSerializer serializer = domImplLS.createLSSerializer();
                resultXmlStr = serializer.writeToString(resultXml);
            } catch (Exception e) {
                resultXmlStr = "Unable to get XML result: "+e;
            }
            throw new KalturaApiException("XPath expression exception ("+xee+") evaluating result:"+resultXmlStr);
        }

        if (resultElement != null) {
            return;            
        } else {
            throw new KalturaApiException("Invalid result");
        }
    }

/**
 * 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);
}

/**
 * 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());
}

@Test
public void testLSInputParsingString() throws Exception {
    DOMImplementationLS impl = (DOMImplementationLS) getDocumentBuilder().getDOMImplementation();
    String xml = "<?xml version='1.0'?><test>runDocumentLS_Q6</test>";

    LSParser domParser = impl.createLSParser(MODE_SYNCHRONOUS, null);
    LSSerializer domSerializer = impl.createLSSerializer();
    // turn off xml decl in serialized string for comparison
    domSerializer.getDomConfig().setParameter("xml-declaration", Boolean.FALSE);
    LSInput src = impl.createLSInput();
    src.setStringData(xml);
    assertEquals(src.getStringData(), xml);

    Document doc = domParser.parse(src);
    String result = domSerializer.writeToString(doc);

    assertEquals(result, "<test>runDocumentLS_Q6</test>");
}

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);
}

/**
 * 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(groups = {"readLocalFiles"})
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(groups = {"readLocalFiles"})
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());
}

@Test
public void testLSInputParsingString() throws Exception {
    DOMImplementationLS impl = (DOMImplementationLS) getDocumentBuilder().getDOMImplementation();
    String xml = "<?xml version='1.0'?><test>runDocumentLS_Q6</test>";

    LSParser domParser = impl.createLSParser(MODE_SYNCHRONOUS, null);
    LSSerializer domSerializer = impl.createLSSerializer();
    // turn off xml decl in serialized string for comparison
    domSerializer.getDomConfig().setParameter("xml-declaration", Boolean.FALSE);
    LSInput src = impl.createLSInput();
    src.setStringData(xml);
    assertEquals(src.getStringData(), xml);

    Document doc = domParser.parse(src);
    String result = domSerializer.writeToString(doc);

    assertEquals(result, "<test>runDocumentLS_Q6</test>");
}

/**
 * `
 * 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);
    }
}

/**
 * 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);
    }
  }
}

/**
 * Serializes the specified SAML 2.0 based XML content representation to its corresponding actual XML syntax
 * representation.
 *
 * @param xmlObject the SAML 2.0 based XML content object
 * @return a {@link String} representation of the actual XML representation of the SAML 2.0 based XML content
 * representation
 * @throws SSOException if an error occurs during the marshalling process
 */
public static String marshall(XMLObject xmlObject) throws SSOException {
    try {
        Marshaller marshaller = XMLObjectProviderRegistrySupport.getMarshallerFactory().getMarshaller(xmlObject);
        Element element = null;
        if (marshaller != null) {
            element = marshaller.marshall(xmlObject);
        }
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS implementation = (DOMImplementationLS) registry.getDOMImplementation("LS");
        LSSerializer writer = implementation.createLSSerializer();
        LSOutput output = implementation.createLSOutput();
        output.setByteStream(byteArrayOutputStream);
        writer.write(element, output);
        return new String(byteArrayOutputStream.toByteArray(), StandardCharsets.UTF_8);
    } catch (ClassNotFoundException | InstantiationException | MarshallingException | IllegalAccessException e) {
        throw new SSOException("Error in marshalling SAML 2.0 Assertion", e);
    }
}

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);
}

/**
 * Creates the metadata file for the file that was created by the wizard.
 *
 * @param targetFolder The folder on which the metadata file will be created.
 */
private void createMetadataFile(FileObject targetFolder) {
    try {
        Document newXmlDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
        Element rootElement = newXmlDocument.createElementNS(SALESFORCE_METADATA_NAMESPACE, getMetadataName());
        Element childElement;
        for (Map.Entry<String, String> node : getMetadataParameters().entrySet()) {
            childElement = newXmlDocument.createElement(node.getKey());
            childElement.setTextContent(node.getValue());
            rootElement.appendChild(childElement);
        }
        FileObject createdData = targetFolder.createData(getMetadataFileName());
        DOMImplementationLS domImplementation = (DOMImplementationLS) newXmlDocument.getImplementation();
        LSSerializer serializer = domImplementation.createLSSerializer();
        serializer.writeToURI(rootElement, createdData.toURI().toString());
    } catch (ParserConfigurationException | IOException ex) {
        Exceptions.printStackTrace(ex);
    }
}

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;
        }
    }

public static void main(String[] args) throws Exception
{
   ArrayList<LineItem> items = new ArrayList<>();
   items.add(new LineItem(new Product("Toaster", 29.95), 3));
   items.add(new LineItem(new Product("Hair dryer", 24.95), 1));

   ItemListBuilder builder = new ItemListBuilder();
   Document doc = builder.build(items);         
   DOMImplementation impl = doc.getImplementation();
   DOMImplementationLS implLS 
         = (DOMImplementationLS) impl.getFeature("LS", "3.0");
   LSSerializer ser = implLS.createLSSerializer();
   String out = ser.writeToString(doc);      

   System.out.println(out);
}

/**
 * Serializes a node using a certain character encoding.
 * 
 * @param node
 *            DOM node to serialize
 * @param os
 *            output stream, to which the node is serialized
 * @param omitXmlDeclaration
 *            indicator whether to omit the XML declaration or not
 * @param encoding
 *            character encoding, can be <code>null</code>, if
 *            <code>null</code> then "UTF-8" is used
 * @throws Exception
 */
public static void transformNonTextNodeToOutputStream(Node node, OutputStream os, boolean omitXmlDeclaration, String encoding)
    throws Exception { //NOPMD
    // previously we used javax.xml.transform.Transformer, however the JDK xalan implementation did not work correctly with a specified encoding
    // therefore we switched to DOMImplementationLS
    if (encoding == null) {
        encoding = "UTF-8";
    }
    DOMImplementationRegistry domImplementationRegistry = DOMImplementationRegistry.newInstance();
    DOMImplementationLS domImplementationLS = (DOMImplementationLS) domImplementationRegistry.getDOMImplementation("LS");
    LSOutput lsOutput = domImplementationLS.createLSOutput();
    lsOutput.setEncoding(encoding);
    lsOutput.setByteStream(os);
    LSSerializer lss = domImplementationLS.createLSSerializer();
    lss.getDomConfig().setParameter("xml-declaration", !omitXmlDeclaration);
    lss.write(node, lsOutput);
}

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);
    }
}

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);
    }
}

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);
    }
}

protected String formatHtml(String html) throws MojoExecutionException {
try {
    InputSource src = new InputSource(new StringReader(html));
    Node document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src).getDocumentElement();
    Boolean keepDeclaration = Boolean.valueOf(html.startsWith("<?xml"));

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

    writer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
    writer.getDomConfig().setParameter("xml-declaration", keepDeclaration);

    return writer.writeToString(document);
} catch (Exception e) {
    throw new MojoExecutionException(e.getMessage(), e);
}
  }

/**
 * Returns a textual representation of an XML Object.
 * 
 * @param doc   XML Dom Document
 * @return  String containing a textual representation of the object
 */
public static String asString(Document doc) {
    try {
        DOMImplementationLS domImplementation = (DOMImplementationLS) doc.getImplementation();
        LSSerializer lsSerializer = domImplementation.createLSSerializer();
        LSOutput lsOutput =  domImplementation.createLSOutput();
        lsOutput.setEncoding("UTF-8");
        return lsSerializer.writeToString(doc);
    } catch (Exception e) {
        e.printStackTrace();
        try {
            DOMSource domSource = new DOMSource(doc);
            StringWriter writer = new StringWriter();
            StreamResult result = new StreamResult(writer);
            TransformerFactory tf = TransformerFactory.newInstance();
            Transformer transformer = tf.newTransformer();
            transformer.transform(domSource, result);
            return writer.toString();
        } catch(Exception ex) {
            logger.error(ex);
            return StackTrace.asString(ex);
        }
    }

}

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);
    }
}

/**
 * Marshall a SAML XML object into a W3C DOM and then into a String
 *
 * @param pXMLObject SAML Object to marshall
 * @return XML version of the SAML Object in string form
 */
private String marshall(XMLObject pXMLObject) {
  try {
    MarshallerFactory lMarshallerFactory = org.opensaml.xml.Configuration.getMarshallerFactory();
    Marshaller lMarshaller = lMarshallerFactory.getMarshaller(pXMLObject);
    Element lElement = lMarshaller.marshall(pXMLObject);

    DOMImplementationLS lDOMImplementationLS = (DOMImplementationLS) DOMImplementationRegistry.newInstance().getDOMImplementation("LS");
    LSSerializer lSerializer = lDOMImplementationLS.createLSSerializer();
    LSOutput lOutput =  lDOMImplementationLS.createLSOutput();
    lOutput.setEncoding("UTF-8");
    Writer lStringWriter = new StringWriter();
    lOutput.setCharacterStream(lStringWriter);
    lSerializer.write(lElement, lOutput);
    return lStringWriter.toString();
  }
  catch (Exception e) {
    throw new ExInternal("Error Serializing the SAML Response", 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);
   }
}

/**
* Method to generated idented XML
* Credit: Steve McLeod and DaoWen.
* Code from http://stackoverflow.com/a/11519668
* @param xml input xml in string format
* @return indented xml in string format
*/
  public static String indentXML(String xml) {

      try {
          final InputSource src = new InputSource(new StringReader(xml));
          final Node document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src).getDocumentElement();
          final Boolean keepDeclaration = 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) {
          throw new RuntimeException(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);
    }
}

protected String formatHtml(String html) throws MojoExecutionException {
try {
    InputSource src = new InputSource(new StringReader(html));
    Node document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src).getDocumentElement();
    Boolean keepDeclaration = Boolean.valueOf(html.startsWith("<?xml"));

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

    writer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
    writer.getDomConfig().setParameter("xml-declaration", keepDeclaration);

    return writer.writeToString(document);
} catch (Exception e) {
    throw new MojoExecutionException(e.getMessage(), 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);
    }
}

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;
        }
    }

public static String serialize(Document document, boolean prettyPrint) {
    DOMImplementationLS impl = getDOMImpl();
    LSSerializer serializer = impl.createLSSerializer();
    // document.normalizeDocument();
    DOMConfiguration config = serializer.getDomConfig();
    if (prettyPrint && config.canSetParameter("format-pretty-print", Boolean.TRUE)) {
        config.setParameter("format-pretty-print", true);
    }
    config.setParameter("xml-declaration", true);        
    LSOutput output = impl.createLSOutput();
    output.setEncoding("UTF-8");
    Writer writer = new StringWriter();
    output.setCharacterStream(writer);
    serializer.write(document, output);
    return writer.toString();
}

protected static String nodeToString(Node n, boolean pretty) {
    try {
        final DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        final DOMImplementationLS impl = (DOMImplementationLS) registry.getDOMImplementation("LS");
        final LSSerializer writer = impl.createLSSerializer();

        writer.getDomConfig().setParameter("xml-declaration", false);
        if (pretty) {
            writer.getDomConfig().setParameter("format-pretty-print", true);
        }

        return writer.writeToString(n);
    } catch (final Exception e) {
        throw new RuntimeException(e);
    }
}

/** Utility methods */
private void writeXmlDocumentToFile(Node node, String filename) {
    try {
        // find file or create one and save all info
        File file = new File(filename);
        if(!file.exists()) {
            file.createNewFile();
        }

        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS implementationLS =  (DOMImplementationLS)registry.getDOMImplementation("LS");

        LSOutput output = implementationLS.createLSOutput();
        output.setEncoding("UTF-8");
        output.setCharacterStream(new FileWriter(file));

        LSSerializer serializer = implementationLS.createLSSerializer();
        serializer.getDomConfig().setParameter("format-pretty-print", true);

        serializer.write(node, output);

    } catch (Exception e1) {
        e1.printStackTrace();
    }
}

private String getXmlString(Node node) {
    try {

        DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
        DOMImplementationLS implementationLS =  (DOMImplementationLS)registry.getDOMImplementation("LS");

        LSOutput output = implementationLS.createLSOutput();
        output.setEncoding(this.xmlEncoding);
        output.setCharacterStream(new StringWriter());

        LSSerializer serializer = implementationLS.createLSSerializer();
        serializer.write(node, output);

        return output.getCharacterStream().toString();

    } catch (Exception e1) {
        e1.printStackTrace();
    }

    return null;
}

protected String serialize(Node n) 
            throws ClassNotFoundException,
                    InstantiationException,
                    IllegalAccessException{
    System.setProperty(DOMImplementationRegistry.PROPERTY,
                        "org.apache.xerces.dom.DOMImplementationSourceImpl");
    DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();

    DOMImplementationLS impl = 
            (DOMImplementationLS)registry.getDOMImplementation("LS");

    LSSerializer writer = impl.createLSSerializer();
    String str = writer.writeToString(n);

    // sometimes we get processor directives, such as <?xml version="1.0"?>
    // strip these out
    Pattern directivePattern = Pattern.compile("<\\?xml.*$", Pattern.MULTILINE);
    Matcher m = directivePattern.matcher(str);
    str = m.replaceFirst("");

    return str;
}

/**
 * `
 * 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);
    }
}

/**
 * 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);
    }
}

/**
 * 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);
    }
}

private static String marshall(XMLObject xmlObject) throws org.wso2.carbon.identity.base.IdentityException {
    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("UTF-8");
    } catch (Exception e) {
        log.error("Error Serializing the SAML Response");
        throw IdentityException.error("Error Serializing the SAML Response", e);
    }
}