Java Xml Dom Xpath Example
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DocumentBuilder b = DocumentBuilderFactory. newInstance (). newDocumentBuilder (); org.w3c.dom.Document doc = b. parse ( new FileInputStream( "page.html" )); XPath xPath = XPathFactory. newInstance (). newXPath (); NodeList nodes = (NodeList)xPath. evaluate ( "/html/body/p/div[3]/a" , doc.getDocumentElement(), XPathConstants.NODESET); for ( int i = 0 ; i < nodes. getLength (); ++i) { Element e = (Element) nodes. item (i); }
public static NodeList query(Node node, String searchString) throws XPathExpressionException { XPath xpath = XPathFactory. newInstance (). newXPath (); return (NodeList) xpath. evaluate (searchString, node, XPathConstants.NODESET); }
import java.io.FileReader; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathConstants; import javax.xml.xpath.XPathFactory; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import org.xml.sax.InputSource; public class GuestList { public static void main(String[] args) throws Exception { XPathFactory factory = XPathFactory. newInstance (); XPath xPath = factory. newXPath (); NodeList shows = (NodeList) xPath. evaluate ( "/schedule/show" , new InputSource( new FileReader( "tds.xml" )), XPathConstants.NODESET); for ( int i = 0 ; i < shows. getLength (); i++) { Element show = (Element) shows. item (i); String guestName = xPath. evaluate ( "guest/name" , show); String guestCredit = xPath. evaluate ( "guest/credit" , show); System.out.println(show.getAttribute( "weekday" ) + ", " + show.getAttribute( "date" ) + " - " + guestName + " (" + guestCredit + ")" ); } } }
boolean exists = statusFile.exists(); if (exists) { DocumentBuilderFactory dbf = DocumentBuilderFactory. newInstance (); builder = dbf. newDocumentBuilder (); Document document = builder. parse (statusFile); NodeList indexNodeList = (NodeList) xPath. evaluate ( "/status/index" , document, XPathConstants.NODESET); Element indexElement = (Element) indexNodeList. item ( 0 ); status.setLastIndexDate(format.parse(indexElement.getAttribute( "dateProcessed" ))); NodeList infos = (NodeList) xPath. evaluate ( "info" , indexElement, XPathConstants.NODESET); for ( int j = 0 ; j < infos. getLength (); j++) { Element info = (Element) infos. item (j); status.getAdditionalInfo().put(info.getAttribute( "key" ), info.getAttribute( "val" )); NodeList errorsNodeList = (NodeList) xPath. evaluate ( "/status/errors" , document, XPathConstants.NODESET); if (errorsNodeList. getLength () > 0 ) { Element errorsElement = (Element) errorsNodeList. item ( 0 ); NodeList errors = (NodeList) xPath. evaluate ( "error" , errorsElement, XPathConstants.NODESET); for ( int j = 0 ; j < errors. getLength (); j++) { Element anError = (Element) errors. item (j); Long eventId = Long.valueOf(anError.getAttribute( "key" ));
@Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { FullHttpRequest request = (FullHttpRequest) msg; Document document = documentBuilder. parse ( new ByteBufferBackedInputStream(request.content().nioBuffer())); NodeList nodes = (NodeList) messageExpression.evaluate(document, XPathConstants.NODESET); List<Position> positions = new LinkedList<>(); for ( int i = 0 ; i < nodes. getLength (); i++) { Node node = nodes. item (i); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, xPath. evaluate ( "esnName" , node)); if (deviceSession != null) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.setValid( true ); position.setTime(DateUtil.parseDate(xPath. evaluate ( "timestamp" , node))); position.setLatitude(Double.parseDouble(xPath. evaluate ( "latitude" , node))); position.setLongitude(Double.parseDouble(xPath. evaluate ( "longitude" , node))); position.set(Position.KEY_EVENT, xPath. evaluate ( "messageType" , node)); positions.add(position); } } sendResponse(channel, HttpResponseStatus.OK); return positions; }
protected void clearNode(Element parentElement, String nodeName) throws XPathExpressionException { if (parentElement.hasChildNodes()) { NodeList children = (NodeList) xPath. evaluate (nodeName, parentElement, XPathConstants.NODESET); for ( int j = 0 ; j < children. getLength (); j++) { parentElement.removeChild(children. item (j)); } children = parentElement.getChildNodes(); for ( int j = 0 ; j < children. getLength (); j++) { if (children. item (j).getNodeName().equalsIgnoreCase( "#text" )) { parentElement.removeChild(children. item (j)); } } } }
private String xpath(String input, String expression) throws Exception { Node node = builderFactory. newDocumentBuilder (). parse ( new InputSource( new StringReader(input))); return (String) xpath. evaluate (expression, node, XPathConstants.STRING); } }
String xml = "<resp><status>good</status><msg>hi</msg></resp>" ; InputSource source = new InputSource( new StringReader(xml)); DocumentBuilderFactory dbf = DocumentBuilderFactory. newInstance (); DocumentBuilder db = dbf. newDocumentBuilder (); Document document = db. parse (source); XPathFactory xpathFactory = XPathFactory. newInstance (); XPath xpath = xpathFactory. newXPath (); String msg = xpath. evaluate ( "/resp/msg" , document); String status = xpath. evaluate ( "/resp/status" , document); System.out.println( "msg=" + msg + ";" + "status=" + status);
try { final DocumentBuilder builder = XmlUtils.buildSecureDocumentBuilder(); final Document doc = builder. parse (conn.getInputStream()); final XPath xpath = XPathFactory. newInstance (). newXPath (); final String numFound = xpath. evaluate ( "/response/result/@numFound" , doc); if ( "0" .equals(numFound)) { missing = true ; } else { result = new ArrayList<>(); final NodeList docs = (NodeList) xpath. evaluate ( "/response/result/doc" , doc, XPathConstants.NODESET); for ( int i = 0 ; i < docs. getLength (); i++) { final String g = xpath. evaluate ( "./str[@name='g']" , docs. item (i)); LOGGER.trace( "GroupId: {}" , g); final String a = xpath. evaluate ( "./str[@name='a']" , docs. item (i)); LOGGER.trace( "ArtifactId: {}" , a); final String v = xpath. evaluate ( "./str[@name='v']" , docs. item (i)); final NodeList attributes = (NodeList) xpath. evaluate ( "./arr[@name='ec']/str" , docs. item (i), XPathConstants.NODESET); boolean pomAvailable = false ; boolean jarAvailable = false ; for ( int x = 0 ; x < attributes. getLength (); x++) { final String tmp = xpath. evaluate ( "." , attributes. item (x)); if ( ".pom" .equals(tmp)) { pomAvailable = true ;
while (resourceList.hasNext()) { ResourceInputStream myStream = resourceList.nextResource(); Document doc = builder. parse (myStream); NodeList nodeList = (NodeList) xPath. evaluate (IMPORT_PATH, doc, XPathConstants.NODESET); int length = nodeList. getLength (); for ( int j= 0 ;j<length;j++) { Element element = (Element) nodeList. item (j); Resource resource = loader.getResource(element.getAttribute( "resource" )); ResourceInputStream ris = new ResourceInputStream(resource.getInputStream(), resource.getURL().toString());
NodeList nl = (NodeList) xpath. evaluate (xpathExpression, node, XPathConstants.NODESET); log.debug( "evaluate returned " + nl. getLength () ); if (nl. getLength ()== 0 ) { log.info( "no results for xpath " + xpathExpression ); for ( int i= 0 ; i<nl. getLength (); i++ ) { result.add(nl. item (i));
public static NodeList query(Node node, String searchString, XPathContext xpathcontext) throws XPathExpressionException { XPath xpath = XPathFactory. newInstance (). newXPath (); xpath.setNamespaceContext(xpathcontext); return (NodeList) xpath. evaluate (searchString, node, XPathConstants.NODESET); }
import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathConstants; import javax.xml.xpath.XPathFactory; import org.w3c.dom.Document; import org.w3c.dom.NodeList; public class Demo { public static void main(String[] args) { DocumentBuilderFactory domFactory = DocumentBuilderFactory. newInstance (); try { DocumentBuilder builder = domFactory. newDocumentBuilder (); Document dDoc = builder. parse ( "E:/test.xml" ); XPath xPath = XPathFactory. newInstance (). newXPath (); NodeList nl = (NodeList) xPath. evaluate ( "/root/author" , dDoc, XPathConstants.NODESET); System.out.println(nl. getLength ()); } catch (Exception e) { e.printStackTrace(); } } }
try { final DocumentBuilder db = XmlUtils.buildSecureDocumentBuilder(); final Document d = db. parse (stream); final XPath xpath = XPathFactory. newInstance (). newXPath (); final List<NugetPackageReference> packages = new ArrayList<>(); final NodeList nodeList = (NodeList) xpath. evaluate ( "//PackageReference" , d, XPathConstants.NODESET); for ( int i = 0 ; i < nodeList. getLength (); i++) { final Node node = nodeList. item (i); final NamedNodeMap attrs = node.getAttributes();
NodeList deleteJobGroupNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-jobs-in-group" , document, XPathConstants.NODESET); NodeList deleteTriggerGroupNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-triggers-in-group" , document, XPathConstants.NODESET); NodeList deleteJobNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-job" , document, XPathConstants.NODESET); NodeList deleteTriggerNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-trigger" , document, XPathConstants.NODESET); NodeList jobNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:schedule/q:job" , document, XPathConstants.NODESET); NodeList jobDataEntries = (NodeList) xpath. evaluate ( "q:job-data-map/q:entry" , jobDetailNode, XPathConstants.NODESET); NodeList triggerEntries = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:schedule/q:trigger/*" , document, XPathConstants.NODESET); NodeList jobDataEntries = (NodeList) xpath. evaluate ( "q:job-data-map/q:entry" , triggerNode, XPathConstants.NODESET);
Element errorsElement = null; clearNode(rootElement, "errors" ); NodeList indexNodeList = (NodeList) xPath. evaluate ( "/status/errors" , document, XPathConstants.NODESET); if (indexNodeList. getLength () > 0 ) { errorsElement = (Element) indexNodeList. item ( 0 ); } else { if (status.getIndexErrors().size() > 0 ) { NodeList errors = (NodeList) xPath. evaluate ( "error[@key='" + entry.getKey() + "']" , errorsElement, XPathConstants.NODESET); if (errors. getLength () == 0 ) { Element anError = document.createElement( "error" ); anError.setAttribute( "key" , entry.getKey().toString());
import java.io.StringReader; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathFactory; import org.xml.sax.InputSource; public class Demo { public static void main(String[] args) throws Exception { String xml = "<car><manufacturer>toyota</manufacturer></car>" ; String xpath = "/car/manufacturer" ; XPath xPath = XPathFactory. newInstance (). newXPath (); assertEquals( "toyota" ,xPath. evaluate (xpath, new InputSource( new StringReader(xml)))); } }
import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathConstants; import javax.xml.xpath.XPathFactory; import org.w3c.dom.Document; import org.w3c.dom.NodeList; public class Demo { public static void main(String[] args) { DocumentBuilderFactory domFactory = DocumentBuilderFactory. newInstance (); try { DocumentBuilder builder = domFactory. newDocumentBuilder (); Document dDoc = builder. parse ( "E:/test.xml" ); XPath xPath = XPathFactory. newInstance (). newXPath (); Node node = (Node) xPath. evaluate ( "/Request/@name" , dDoc, XPathConstants.NODE); System.out.println(node.getNodeValue()); } catch (Exception e) { e.printStackTrace(); } } }
try { final DocumentBuilder db = XmlUtils.buildSecureDocumentBuilder(); final Document d = db. parse (stream); final XPath xpath = XPathFactory. newInstance (). newXPath (); final List<NugetPackageReference> packages = new ArrayList<>(); final NodeList nodeList = (NodeList) xpath. evaluate ( "/packages/package" , d, XPathConstants.NODESET); for ( int i = 0 ; i < nodeList. getLength (); i++) { final Node node = nodeList. item (i); final NamedNodeMap attrs = node.getAttributes(); final Node id = attrs.getNamedItem( "id" );
NodeList deleteJobGroupNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-jobs-in-group" , document, XPathConstants.NODESET); NodeList deleteTriggerGroupNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-triggers-in-group" , document, XPathConstants.NODESET); NodeList deleteJobNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-job" , document, XPathConstants.NODESET); NodeList deleteTriggerNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:pre-processing-commands/q:delete-trigger" , document, XPathConstants.NODESET); NodeList jobNodes = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:schedule/q:job" , document, XPathConstants.NODESET); NodeList jobDataEntries = (NodeList) xpath. evaluate ( "q:job-data-map/q:entry" , jobDetailNode, XPathConstants.NODESET); NodeList triggerEntries = (NodeList) xpath. evaluate ( "/q:job-scheduling-data/q:schedule/q:trigger/*" , document, XPathConstants.NODESET); NodeList jobDataEntries = (NodeList) xpath. evaluate ( "q:job-data-map/q:entry" , triggerNode, XPathConstants.NODESET);
Source: https://www.tabnine.com/code/java/methods/javax.xml.xpath.XPath/evaluate
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