Reading XML with Java DocumentBuilder parsing with Java XPath

reading and parsing xml.groovy

// Groovy: Reading XML with Java DocumentBuilder parsing with Java XPath
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.*

import org.w3c.dom.Document;

File f= new File( 'data.xml')

// Reading a Document Builder with Java style
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder        = factory.newDocumentBuilder();
Document doc                   = builder.parse(f);

println "document =" + doc.getDocumentElement().textContent

// Parsing

String XPATH_EXPRESSION="//entry"

// Parsing with Java Xpath
def xp      = XPathFactory.newInstance().newXPath()
def expr    = xp.compile(XPATH_EXPRESSION)
def nodes   = expr.evaluate(doc, XPathConstants.NODESET)

nodes.each{ println "Element ${it.name}: ${it.textContent}" }