java - 停止 stax 解析器执行

Question

我正在寻找一种在获得标签内容后停止解析器的方法。我怎样才能做到这一点？另外我现在怎么知道我正在搜索的标签被点击了。

public class XmlParser {

  public String getValue(final String xml, final String tag) throws XMLStreamException {

    String tagContent = null;

    final XMLInputFactory factory = XMLInputFactory.newInstance();
    final XMLStreamReader reader = factory.createXMLStreamReader(new StringReader(xml));

    while (reader.hasNext()) {
      final int event = reader.next();
      switch (event) {
        case XMLStreamConstants.START_ELEMENT:
          break;
        case XMLStreamConstants.CHARACTERS:
          tagContent = reader.getText().trim();
          break;
        case XMLStreamConstants.END_ELEMENT:
          break;
      }
    }
    return tagContent;
  }
}

Answer 1

boolean finished = false;
while(!finished && reader.hasNext()) {
  final int event = reader.next();
  //set finished = true if you hit an event that means you want to stop parsing
}
//don't forget to close the reader and the I/O streams