Output on namespaced xpath in java
- by user347928
I have the following code and have had some trouble with a specific field and it's output. The namespace is connected but doesn't seem to be outputting on the required field. Any info on this would be great.
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPathFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathExpressionException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
public class test
{
public static void main(String args[])
{
String xmlStr = "<aws:UrlInfoResponse xmlns:aws=\"http://alexa.amazonaws.com/doc/2005-10-05/\">\n" +
" <aws:Response xmlns:aws=\"http://awis.amazonaws.com/doc/2005-07-11\">\n" +
" <aws:OperationRequest>\n" +
" <aws:RequestId>blah</aws:RequestId>\n" +
" </aws:OperationRequest>\n" +
" <aws:UrlInfoResult>\n" +
" <aws:Alexa>\n" +
" <aws:TrafficData>\n" +
" <aws:DataUrl type=\"canonical\">harvard.edu/</aws:DataUrl>\n" +
" <aws:Rank>1635</aws:Rank>\n" +
" </aws:TrafficData>\n" +
" </aws:Alexa>\n" +
" </aws:UrlInfoResult>\n" +
" <aws:ResponseStatus xmlns:aws=\"http://alexa.amazonaws.com/doc/2005-10-05/\">\n" +
" <aws:StatusCode>Success</aws:StatusCode>\n" +
" </aws:ResponseStatus>\n" +
" </aws:Response>\n" +
"</aws:UrlInfoResponse>";
DocumentBuilderFactory xmlFact = DocumentBuilderFactory.newInstance();
xmlFact.setNamespaceAware(true);
DocumentBuilder builder = null;
try {
builder = xmlFact.newDocumentBuilder();
} catch (ParserConfigurationException e) {
e.printStackTrace(); }
Document doc = null;
try {
doc = builder.parse(
new ByteArrayInputStream( xmlStr.getBytes()));
} catch (SAXException e) {
e.printStackTrace(); } catch (IOException e) {
e.printStackTrace(); }
System.out.println(doc.getDocumentElement().getNamespaceURI());
System.out.println(xmlFact.isNamespaceAware());
String xpathStr = "//aws:OperationRequest";
XPathFactory xpathFact = XPathFactory.newInstance();
XPath xpath = xpathFact.newXPath();
String result = null;
try {
result = xpath.evaluate(xpathStr, doc);
} catch (XPathExpressionException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
System.out.println("XPath result is \"" + result + "\"");
}
}
