parsing with dom4j - parsing

Question

I am successfully retrieve the data of response using xpath expression /abcde/response from the xml ,
<abcde>
<response>000</response>
</abcde>
But couldnt retrieve the data of response from the same xml but with some additional data
<abcde version="8.1" xmlns="http://www.litle.com/schema"
response="0" message="Valid Format">
<response>000</response>
</abcde>
What am i doing wrong ?

Answer 1

package stackoverflow;
import java.io.ByteArrayInputStream;
import java.util.HashMap;
import java.util.Map;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentFactory;
import org.dom4j.DocumentHelper;
import org.dom4j.XPath;
import org.dom4j.io.SAXReader;
import org.dom4j.xpath.DefaultXPath;
import org.jaxen.VariableContext;
public class MakejdomWork {
public static void main(String[] args) {
new MakejdomWork().run();
}
public void run() {
ByteArrayInputStream bis = new ByteArrayInputStream("<abcde version=\"8.1\" xmlns=\"http://www.litle.com/schema\" response=\"0\" message=\"Valid Format\"> <response>000</response></abcde>".getBytes());
//ByteArrayInputStream bis = new ByteArrayInputStream("<abcde><response>000</response></abcde>".getBytes());
Map nsPrefixes = new HashMap();
nsPrefixes.put( "x", "http://www.litle.com/schema" );
DocumentFactory factory = new DocumentFactory();
factory.setXPathNamespaceURIs( nsPrefixes );
SAXReader reader = new SAXReader();
reader.setDocumentFactory( factory );
Document doc;
try {
doc = reader.read( bis );
Object value = doc.valueOf("/abcde/x:response");
System.out.println(value);
} catch (DocumentException e) {
e.printStackTrace();
}
}
}
Short answer: you need to use namespace prefixes if your parser is namespace aware (which dom4j is)