Java HTML/XML - 如何使用Java API编码特殊的XML字符

import java.io.StringWriter;
import java.io.Writer;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Comment;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class Main {
  public static void main(String[] args) throws Exception {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = dbf.newDocumentBuilder();
    Document doc = builder.newDocument();
    Element element = doc.createElement("root");
    doc.appendChild(element);
    Comment comment = doc.createComment("This is a comment");
    doc.insertBefore(comment, element);
    Element itemElement = doc.createElement("item");
    element.appendChild(itemElement);
    itemElement.setAttribute("myattr", "attr>value");
    itemElement.insertBefore(doc.createTextNode("te<xt"),
        itemElement.getLastChild());
    prettyPrint(doc);
  }
  public static final void prettyPrint(Document xml) throws Exception {
    Transformer tf = TransformerFactory.newInstance().newTransformer();
    tf.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
    tf.setOutputProperty(OutputKeys.INDENT, "yes");
    Writer out = new StringWriter();
    tf.transform(new DOMSource(xml), new StreamResult(out));
    System.out.println(out.toString());
  }
}