Java HTML/XML - 如何使用Xerces將DOM序列化為FileOutputStream

import org.w3c.dom.Document;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.ls.LSSerializer;

public class Main {
  public static void main(String[] args) throws Exception {
    DOMImplementationRegistry registry = DOMImplementationRegistry
        .newInstance();
    DOMImplementationLS impl = (DOMImplementationLS) registry
        .getDOMImplementation("XML 3.0 LS 3.0");
    if (impl == null) {
      System.out.println("No DOMImplementation found !");
      System.exit(0);
    }

    System.out.printf("DOMImplementationLS: %s\n", impl.getClass().getName());

    LSParser parser = impl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS,
        "http://www.w3.org/TR/REC-xml");
    // http://www.w3.org/2001/XMLSchema
    System.out.printf("LSParser: %s\n", parser.getClass().getName());

    Document doc = parser.parseURI("");

    LSSerializer serializer = impl.createLSSerializer();
    LSOutput output = impl.createLSOutput();
    output.setEncoding("UTF-8");
    output.setByteStream(System.out);
    serializer.write(doc, output);
    System.out.println();
  }
}