Java TransformerHandler.startElement方法代码示例

import javax.xml.transform.sax.TransformerHandler; //导入方法依赖的package包/类
@Test
public void test() throws Exception {
    TransformerHandler th = ((SAXTransformerFactory) TransformerFactory.newInstance()).newTransformerHandler();

    DOMResult result = new DOMResult();
    th.setResult(result);

    th.startDocument();
    th.startElement("", "root", "root", new AttributesImpl());
    th.characters(new char[0], 0, 0);
    th.endElement("", "root", "root");
    th.endDocument();

    // there's no point in having empty text --- we should remove it
    Assert.assertEquals(0, ((Document) result.getNode()).getDocumentElement().getChildNodes().getLength());
}
 

import javax.xml.transform.sax.TransformerHandler; //导入方法依赖的package包/类
/**
 * Creates a {@link TransformerHandler}.
 * 
 * @param commentHeader the comment header
 * @param rootTag the root tag
 * @param streamResult stream result
 */
public static TransformerHandler createTransformerHandler(String commentHeader, String rootTag,
		StreamResult streamResult, Charset charset)
		throws TransformerFactoryConfigurationError,
		TransformerConfigurationException, SAXException {
	SAXTransformerFactory tf = (SAXTransformerFactory) TransformerFactory.newInstance();
       try {
       	tf.setAttribute("indent-number", new Integer(2));
       } catch (Exception e) {
       	// ignore, workaround for JDK 1.5 bug, see http://forum.java.sun.com/thread.jspa?threadID=562510
       }
       TransformerHandler transformerHandler = tf.newTransformerHandler();
       Transformer serializer = transformerHandler.getTransformer();
       serializer.setOutputProperty(OutputKeys.ENCODING, charset.name());
       serializer.setOutputProperty(OutputKeys.METHOD, "xml");
       serializer.setOutputProperty(OutputKeys.INDENT, "yes");
       transformerHandler.setResult(streamResult);
       transformerHandler.startDocument();
       String newline = System.getProperty("line.separator");
       if (newline == null) {
       	newline = "\n";
       }
	commentHeader = (newline + commentHeader).replaceAll("\\n--", newline + " ");
	transformerHandler.characters("\n".toCharArray(), 0, 1);
       transformerHandler.comment(commentHeader.toCharArray(), 0, commentHeader.toCharArray().length);
	transformerHandler.characters("\n".toCharArray(), 0, 1);
	if (rootTag.length() > 0) {
		transformerHandler.startElement("", "", rootTag, null);
	}
       return transformerHandler;
}
 

import javax.xml.transform.sax.TransformerHandler; //导入方法依赖的package包/类
@Override
public void createXml(List<User> list, String fileName) throws Exception {
	Result resultXml = new StreamResult(new FileOutputStream(fileName)); // 输出到person.xml
	SAXTransformerFactory sff = (SAXTransformerFactory) SAXTransformerFactory
			.newInstance();
	TransformerHandler th = sff.newTransformerHandler();
	th.setResult(resultXml);
	Transformer transformer = th.getTransformer();
	transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8"); // 编码格式是UTF-8
	transformer.setOutputProperty(OutputKeys.INDENT, "yes"); // 换行

	// 开始xml文档
	th.startDocument();

	th.startElement("", "", "users", null); // 定义users节点
	for (User user : list) {
		AttributesImpl attrs = new AttributesImpl();
		attrs.addAttribute("", "", "id", "", String.valueOf(user.getId()));

		th.startElement("", "", "user", attrs); // 定义user节点

		// 定义name节点
		th.startElement("", "", "name", null);
		th.characters(user.getName().toCharArray(), 0, user.getName()
				.length());
		th.endElement("", "", "name");
		// 定义age节点
		th.startElement("", "", "age", null);
		th.characters(String.valueOf(user.getAge()).toCharArray(), 0,
				String.valueOf(user.getAge()).toCharArray().length);
		th.endElement("", "", "age");
		// 定义sex节点
		th.startElement("", "", "sex", null);
		th.characters(user.getSex().toCharArray(), 0, user.getSex()
				.length());
		th.endElement("", "", "sex");

		th.endElement("", "", "user"); // 结束user节点
	}
	th.endElement("", "", "users"); // 结束users节点

	// 结束xml文档
	th.endDocument();
}
 

import javax.xml.transform.sax.TransformerHandler; //导入方法依赖的package包/类
public void generate(Values values) throws IOException {
    File dimenFile = values.dimenFile;
    FileOutputStream fos = new FileOutputStream(dimenFile);
    StreamResult result = new StreamResult(fos);
    SAXTransformerFactory sff = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
    TransformerHandler th = null;
    try {
        th = sff.newTransformerHandler();
        Transformer transformer = th.getTransformer();
        transformer.setOutputProperty(OutputKeys.ENCODING, "utf-8");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");

        th.setResult(result);

        th.startDocument();

        AttributesImpl attr = new AttributesImpl();
        char[] space = "\n".toCharArray();
        th.characters(space, 0, space.length);
        th.startElement("", "", "resources", attr);

        List<Dimen> dimens = values.dimens;
        char[] spaceChar = "\n    ".toCharArray();
        for (Dimen dimen : dimens) {
            //white space
            th.characters(spaceChar, 0, spaceChar.length);
            //name attr
            attr.addAttribute("", "", "name", String.class.getName(), dimen.name);
            th.startElement("", "", "dimen", attr);
            char[] valueChars = String.format("%spx", dimen.value).toCharArray();
            th.characters(valueChars, 0, valueChars.length);
            th.endElement("", "", "dimen");
        }

        th.endElement("", "", "resources");
        th.endDocument();

    } catch (TransformerConfigurationException | SAXException e) {
        e.printStackTrace();
    } finally {
        fos.close();
    }
}