import com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl; //导入依赖的package包/类
public static Document LoadXML(Source file)
{
	try
	{
		DocumentBuilderFactory dbf = DocumentBuilderFactoryImpl.newInstance() ;
		DocumentBuilder db = dbf.newDocumentBuilder() ;
		Document doc = db.newDocument() ;
		Result res = new DOMResult(doc) ;
		TransformerFactory tr = TransformerFactory.newInstance();
		Transformer xformer = tr.newTransformer();
		xformer.transform(file, res);

		return doc ;
	}
	catch (Exception e)
	{
		String csError = e.toString();
		Log.logImportant(csError);
		Log.logImportant("ERROR while loading XML "+file.toString());
	}
	return null;
}
 

import com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl; //导入依赖的package包/类
public static Document loadXML(ByteArrayInputStream byteArrayInputStream)
{
	try
	{
		StreamSource streamSource = new StreamSource(byteArrayInputStream); 
		DocumentBuilderFactory dbf = DocumentBuilderFactoryImpl.newInstance() ;
		DocumentBuilder db = dbf.newDocumentBuilder() ;
		Document doc = db.newDocument() ;
		Result res = new DOMResult(doc) ;
		TransformerFactory tr = TransformerFactory.newInstance();
		Transformer xformer = tr.newTransformer();
		xformer.transform(streamSource, res);

		return doc ;
	}
	catch (Exception e)
	{
		String csError = e.toString();
		Log.logImportant(csError);
		Log.logImportant("ERROR while loading XML from byteArrayInputStream "+byteArrayInputStream.toString());
	}
	return null;
}
 

import com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl; //导入依赖的package包/类
/**
 * Sets up handler for <code>DOMResult</code>.
 */
private void setupDOMResultHandler(DOMSource source, DOMResult result) throws SAXException {
    // If there's no DOMResult, unset the validator handler
    if (result == null) {
        fDOMValidatorHandler = null;
        fSchemaValidator.setDocumentHandler(null);
        return;
    }
    final Node nodeResult = result.getNode();
    // If the source node and result node are the same use the DOMResultAugmentor.
    // Otherwise use the DOMResultBuilder.
    if (source.getNode() == nodeResult) {
        fDOMValidatorHandler = fDOMResultAugmentor;
        fDOMResultAugmentor.setDOMResult(result);
        fSchemaValidator.setDocumentHandler(fDOMResultAugmentor);
        return;
    }
    if (result.getNode() == null) {
        try {
            DocumentBuilderFactory factory = fComponentManager.getFeature(Constants.ORACLE_FEATURE_SERVICE_MECHANISM) ?
                                DocumentBuilderFactory.newInstance() : new DocumentBuilderFactoryImpl();
            factory.setNamespaceAware(true);
            DocumentBuilder builder = factory.newDocumentBuilder();
            result.setNode(builder.newDocument());
        }
        catch (ParserConfigurationException e) {
            throw new SAXException(e);
        }
    }
    fDOMValidatorHandler = fDOMResultBuilder;
    fDOMResultBuilder.setDOMResult(result);
    fSchemaValidator.setDocumentHandler(fDOMResultBuilder);
}
 

import com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl; //导入依赖的package包/类
/**
 * Creates a new instance of the {@code DocumentBuilderFactory} builtin
 * system-default implementation.
 *
 * @return A new instance of the {@code DocumentBuilderFactory} builtin
 *         system-default implementation.
 *
 * @since 9
 */
public static DocumentBuilderFactory newDefaultInstance() {
    return new DocumentBuilderFactoryImpl();
}