PersistUtils.java 文件源码

public static void saveDATtoFile(Datafile datafile, String path)
            throws ParserConfigurationException, JAXBException, TransformerException, FileNotFoundException {

        JAXBContext jc = JAXBContext.newInstance(Datafile.class);

        // Create the Document
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document document = db.newDocument();
        DocumentType docType = getDocumentType(document);

        // Marshal the Object to a Document formatted so human readable
        Marshaller marshaller = jc.createMarshaller();
/*
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
        marshaller.setProperty(Marshaller.JAXB_SCHEMA_LOCATION, docType.getSystemId());
*/

        marshaller.marshal(datafile, document);
        document.setXmlStandalone(true);
        // NOTE could output with marshaller but cannot set DTD document type
/*
        OutputStream os = new FileOutputStream(path);
        marshaller.marshal(datafile, os);
*/

        // Output the Document
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        //    transformerFactory.setAttribute("indent-number", "4");
        Transformer transformer = transformerFactory.newTransformer();
        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        //   transformer.setOutputProperty(OutputKeys.STANDALONE, "yes");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "8");
        transformer.setOutputProperty(OutputKeys.DOCTYPE_PUBLIC, docType.getPublicId());
        transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, docType.getSystemId());
        DOMSource source = new DOMSource(document);
        StreamResult result = new StreamResult(new File(path));
        transformer.transform(source, result);
    }