Java DocumentBuilder.getDOMImplementation方法代码示例

import javax.xml.parsers.DocumentBuilder; //导入方法依赖的package包/类
@Test
public void testXML11() {

    /**
     * XML 1.1 document to parse.
     */
    final String XML11_DOCUMENT = "<?xml version=\"1.1\" encoding=\"UTF-16\"?>\n" + "<hello>" + "world" + "<child><children/><children/></child>"
            + "</hello>";

    /**JDK-8035467
     * no newline in default output
     */
    final String XML11_DOCUMENT_OUTPUT =
            "<?xml version=\"1.1\" encoding=\"UTF-16\"?>"
            + "<hello>"
            + "world"
            + "<child><children/><children/></child>"
            + "</hello>";

    // it all begins with a Document
    DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder documentBuilder = null;
    try {
        documentBuilder = documentBuilderFactory.newDocumentBuilder();
    } catch (ParserConfigurationException parserConfigurationException) {
        parserConfigurationException.printStackTrace();
        Assert.fail(parserConfigurationException.toString());
    }
    Document document = null;

    StringReader stringReader = new StringReader(XML11_DOCUMENT);
    InputSource inputSource = new InputSource(stringReader);
    try {
        document = documentBuilder.parse(inputSource);
    } catch (SAXException saxException) {
        saxException.printStackTrace();
        Assert.fail(saxException.toString());
    } catch (IOException ioException) {
        ioException.printStackTrace();
        Assert.fail(ioException.toString());
    }

    // query DOM Interfaces to get to a LSSerializer
    DOMImplementation domImplementation = documentBuilder.getDOMImplementation();
    DOMImplementationLS domImplementationLS = (DOMImplementationLS) domImplementation;
    LSSerializer lsSerializer = domImplementationLS.createLSSerializer();

    System.out.println("Serializer is: " + lsSerializer.getClass().getName() + " " + lsSerializer);

    // get default serialization
    String defaultSerialization = lsSerializer.writeToString(document);

    System.out.println("XML 1.1 serialization = \"" + defaultSerialization + "\"");

    // output should == input
    Assert.assertEquals(XML11_DOCUMENT_OUTPUT, defaultSerialization, "Invalid serialization of XML 1.1 document: ");
}
 

import javax.xml.parsers.DocumentBuilder; //导入方法依赖的package包/类
public InputSource newInputSource(String filename) throws Exception {
    // Create DOMImplementationLS, and DOM L3 LSParser
    DocumentBuilderFactory fact = DocumentBuilderFactory.newInstance();
    DocumentBuilder bldr = fact.newDocumentBuilder();
    DOMImplementationLS impl = (DOMImplementationLS) bldr.getDOMImplementation();
    LSParser domparser = impl.createLSParser(MODE_SYNCHRONOUS, null);
    domparser.setFilter(new MyDOMBuilderFilter());

    // Parse the xml document to create the DOM Document using
    // the DOM L3 LSParser and a LSInput (formerly LSInputSource)
    Document doc = null;
    LSInput src = impl.createLSInput();
    // register the input file with the input source...
    String systemId = filenameToURL(filename);
    src.setSystemId(systemId);
    try (Reader reader = new FileReader(filename)) {
        src.setCharacterStream(reader);
        src.setEncoding("UTF-8");
        doc = domparser.parse(src);
    }

    // Use DOM L3 LSSerializer (previously called a DOMWriter)
    // to serialize the xml doc DOM to a file stream.
    String tmpCatalog = Files.createTempFile(Paths.get(USER_DIR), "catalog.xml", null).toString();

    LSSerializer domserializer = impl.createLSSerializer();
    domserializer.setFilter(new MyDOMWriterFilter());
    domserializer.getNewLine();
    DOMConfiguration config = domserializer.getDomConfig();
    config.setParameter("xml-declaration", Boolean.TRUE);
    String result = domserializer.writeToString(doc);
    try (FileWriter os = new FileWriter(tmpCatalog, false)) {
        os.write(result);
        os.flush();
    }

    // Return the Input Source created from the Serialized DOM L3 Document.
    InputSource catsrc = new InputSource(new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(tmpCatalog)))));
    catsrc.setSystemId(systemId);
    return catsrc;
}