import com.sun.xml.internal.fastinfoset.dom.DOMDocumentParser; //导入依赖的package包/类
public void parse(InputStream document, OutputStream events, String workingDirectory) throws Exception {
    if (!document.markSupported()) {
        document = new BufferedInputStream(document);
    }

    document.mark(4);
    boolean isFastInfosetDocument = Decoder.isFastInfosetDocument(document);
    document.reset();

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setNamespaceAware(true);
    DocumentBuilder db = dbf.newDocumentBuilder();

    Document d;
    if (isFastInfosetDocument) {
        d = db.newDocument();
        DOMDocumentParser ddp = new DOMDocumentParser();
        ddp.parse(d, document);
    } else {
        if (workingDirectory != null) {
            db.setEntityResolver(createRelativePathResolver(workingDirectory));
        }
        d = db.parse(document);
    }

    SAXEventSerializer ses = new SAXEventSerializer(events);

    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer();
    t.transform(new DOMSource(d), new SAXResult(ses));
}