BaseXMLBuilder.java 文件源码

/**
 * Construct an XML Document with a default namespace with the given
 * root element.
 *
 * @param name
 * the name of the document's root element.
 * @param namespaceURI
 * default namespace URI for document, ignored if null or empty.
 * @param enableExternalEntities
 * enable external entities; beware of XML External Entity (XXE) injection.
 * @param isNamespaceAware
 * enable or disable namespace awareness in the underlying
 * {@link DocumentBuilderFactory}
 * @return
 * an XML Document.
 *
 * @throws FactoryConfigurationError
 * @throws ParserConfigurationException
 */
protected static Document createDocumentImpl(
    String name, String namespaceURI, boolean enableExternalEntities,
    boolean isNamespaceAware)
    throws ParserConfigurationException, FactoryConfigurationError
{
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(isNamespaceAware);
    enableOrDisableExternalEntityParsing(factory, enableExternalEntities);
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document document = builder.newDocument();
    Element rootElement = null;
    if (namespaceURI != null && namespaceURI.length() > 0) {
        rootElement = document.createElementNS(namespaceURI, name);
    } else {
        rootElement = document.createElement(name);
    }
    document.appendChild(rootElement);
    return document;
}