Java HTML/XML - 如何通过Stax检测End元素

import java.io.FileReader;

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;

public class Main {

  public static void main(String[] args) throws Exception {
    XMLInputFactory factory = XMLInputFactory.newInstance();
    XMLStreamReader sr = factory.createXMLStreamReader(new FileReader(
        "test.xml"));
    System.out.println(sr.getClass());

    while (sr.hasNext()) {
      int eventType = sr.next();

      if (eventType == XMLStreamReader.START_DOCUMENT) {
        continue;
      } else if (eventType == XMLStreamReader.END_ELEMENT) {
        System.out.println("End Element:    " + sr.getLocalName());
      } else if (eventType == XMLStreamReader.START_ELEMENT) {
        System.out.println("Start Element:  " + sr.getLocalName());
      }
    }
  }
}