您可以尝试以下操作:
您可以像下面这样做:
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.XMLReader;
public class Demo {
public static void main(String[] args) throws Exception {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
xr.setContentHandler(new MyContentHandler(xr));
xr.parse("input.xml");
}
}
MyContentHandler
这个类负责处理你的XML文档。当你遇到一个想要忽略的节点时,你可以使用IgnoringContentHandler来替换它,这将会吞噬该节点的所有事件。
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
public class MyContentHandler extends DefaultHandler {
private XMLReader xmlReader;
public MyContentHandler(XMLReader xmlReader) {
this.xmlReader = xmlReader;
}
public void startElement(String uri, String localName, String qName,
Attributes atts) throws SAXException {
if ("sodium".equals(qName)) {
xmlReader.setContentHandler(new IgnoringContentHandler(xmlReader,
this));
} else {
System.out.println("START " + qName);
}
}
public void endElement(String uri, String localName, String qName)
throws SAXException {
System.out.println("END " + qName);
}
public void characters(char[] ch, int start, int length)
throws SAXException {
System.out.println(new String(ch, start, length));
}
}
IgnoringContentHandler
当忽略内容处理程序完成事件捕获后,它会将控制权传回到您的主ContentHandler。
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
public class IgnoringContentHandler extends DefaultHandler {
private int depth = 1;
private XMLReader xmlReader;
private ContentHandler contentHandler;
public IgnoringContentHandler(XMLReader xmlReader, ContentHandler contentHandler) {
this.contentHandler = contentHandler;
this.xmlReader = xmlReader;
}
public void startElement(String uri, String localName, String qName,
Attributes atts) throws SAXException {
depth++;
}
public void endElement(String uri, String localName, String qName)
throws SAXException {
depth--;
if(0 == depth) {
xmlReader.setContentHandler(contentHandler);
}
}
}