XPathMetadataExtracter.java 文件源码

/**
 * Default constructor
 */
public XPathMetadataExtracter()
{
    super(new HashSet<String>(Arrays.asList(SUPPORTED_MIMETYPES)));
    try
    {
        DocumentBuilderFactory normalFactory = DocumentBuilderFactory.newInstance();
        documentBuilder = normalFactory.newDocumentBuilder();

        DocumentBuilderFactory dtdIgnoringFactory = DocumentBuilderFactory.newInstance();
        dtdIgnoringFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
        dtdIgnoringFactory.setFeature("http://xml.org/sax/features/validation", false);
        dtdIgnoringDocumentBuilder = dtdIgnoringFactory.newDocumentBuilder();

        xpathFactory = XPathFactory.newInstance();
    }
    catch (Throwable e)
    {
        throw new AlfrescoRuntimeException("Failed to initialize XML metadata extractor", e);
    }
}