Print only item titles:
import javax.xml.stream.*;
import java.net.*;
import java.io.*;
public class BetterRSSLister {
public static void main(String[] args) {
if (args.length == 0) {
System.err.println("Usage: java BetterRSSLister url" );
return;
}
try {
InputStream in;
try {
URL u = new URL(args[0]);
in = u.openStream();
}
catch (MalformedURLException ex) {
// Maybe it's a file name
in = new FileInputStream(args[0]);
}
XMLInputFactory factory = XMLInputFactory.newInstance();
XMLStreamReader parser = factory.createXMLStreamReader(in);
boolean inItem = false;
boolean inTitle = false;
// I am relying on no recursion here. To fix this
// just keep an int count rather than a boolean
for (int event = parser.nextTag();
parser.hasNext();
event = parser.next()) {
if (event == XMLStreamConstants.START_ELEMENT) {
String name = parser.getLocalName();
if (name.equals("title")) inTitle = true;
else if (name.equals("item")) inItem = true;
}
else if (event == XMLStreamConstants.END_ELEMENT) {
String name = parser.getLocalName();
if (name.equals("title")) inTitle = false;
else if (name.equals("item")) inItem = false;
}
else if (parser.hasText() && event != XMLStreamConstants.COMMENT) {
if (inItem && inTitle) System.out.println(parser.getText());
}
}
parser.close();
}
catch (XMLStreamException ex) {
System.out.println(ex);
}
catch (IOException ex) {
System.out.println("IOException while parsing " + args[0]);
}
}
}