Example usage for javax.xml.xpath XPathFactory newInstance

List of usage examples for javax.xml.xpath XPathFactory newInstance

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Introduction

In this page you can find the example usage for javax.xml.xpath XPathFactory newInstance.

Prototype

public static XPathFactory newInstance()

Source Link

Document

Get a new XPathFactory instance using the default object model, #DEFAULT_OBJECT_MODEL_URI , the W3C DOM.

This method is functionally equivalent to:

 newInstance(DEFAULT_OBJECT_MODEL_URI)

Since the implementation for the W3C DOM is always available, this method will never fail.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    Document doc = factory.newDocumentBuilder()
            .parse("http://stackoverflow.com/feeds/tag?tagnames=java&sort=newest");
    Element root = doc.getDocumentElement();
    XPath xPath = XPathFactory.newInstance().newXPath();
    XPathExpression expression = xPath.compile("//entry");
    NodeList nl = (NodeList) expression.evaluate(root, XPathConstants.NODESET);
    System.out.println("Found " + nl.getLength() + " items...");
    for (int index = 0; index < nl.getLength(); index++) {
        Node node = nl.item(index);
        expression = xPath.compile("title");
        Node child = (Node) expression.evaluate(node, XPathConstants.NODE);
        System.out.println(child.getTextContent());
    }//  ww  w .j  a v a2  s. c om
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory Factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = Factory.newDocumentBuilder();
    Document doc = builder.parse("myxml.xml");
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();

    XPathExpression expr = xpath.compile("//" + "item1" + "/*");
    Object result = expr.evaluate(doc, XPathConstants.NODESET);
    NodeList nodes = (NodeList) result;
    System.out.println(nodes.getLength());
    for (int i = 0; i < nodes.getLength(); i++) {
        Element el = (Element) nodes.item(i);
        System.out.println("tag: " + el.getNodeName());
        if (el.getFirstChild().getNodeType() == Node.TEXT_NODE)
            System.out.println("inner value:" + el.getFirstChild().getNodeValue());

        NodeList children = el.getChildNodes();
        for (int k = 0; k < children.getLength(); k++) {
            Node child = children.item(k);
            if (child.getNodeType() != Node.TEXT_NODE) {
                System.out.println("child tag: " + child.getNodeName());
                if (child.getFirstChild().getNodeType() == Node.TEXT_NODE)
                    System.out.println("inner child value:" + child.getFirstChild().getNodeValue());
            }/* ww w.  ja  v  a 2  s. c  o  m*/
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws Throwable {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    String entryType = null;/* ww  w.ja v a2  s .  c  o m*/
    XPathExpression[] expressions = new XPathExpression[] {
            xpath.compile("local-name(*[local-name() = 'package'])"),
            xpath.compile("local-name(*[local-name() = 'libapp'])"),
            xpath.compile("local-name(*[local-name() = 'module'])") };

    DocumentBuilderFactory fac = DocumentBuilderFactory.newInstance();
    DocumentBuilder parser = fac.newDocumentBuilder();
    Document doc = parser.parse(args[0]);

    for (int i = 0; i < expressions.length; i++) {
        String found = (String) expressions[i].evaluate(doc.getDocumentElement(), XPathConstants.STRING);
        entryType = mappings.get(found);
        if (entryType != null && !entryType.trim().isEmpty()) {
            break;
        }
    }
    System.out.println(entryType);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(false); // never forget this!
    DocumentBuilder builder = factory.newDocumentBuilder();

    Document doc = builder.parse("/data.xml");

    XPathFactory xPathFactory = XPathFactory.newInstance();
    XPath xpath = xPathFactory.newXPath();

    XPathExpression xPathExpression = xpath.compile("//city/text()");

    Object result = xPathExpression.evaluate(doc, XPathConstants.NODESET);

    System.out.println(result.toString());

    NodeList nodes = (NodeList) result;

    System.out.println(nodes.getLength());
    for (int i = 0; i < nodes.getLength(); i++) {
        System.out.println(nodes.item(i).getNodeValue());
    }/*from   w  w  w.jav a2 s.  c o m*/
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String exp = "/configs/markets/market";
    String path = "data.xml";

    Document xmlDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(path);

    XPath xPath = XPathFactory.newInstance().newXPath();
    XPathExpression xPathExpression = xPath.compile(exp);
    NodeList nodes = (NodeList) xPathExpression.evaluate(xmlDocument, XPathConstants.NODESET);

    Document newXmlDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
    Element root = newXmlDocument.createElement("root");
    newXmlDocument.appendChild(root);/*from   w  w  w . ja va 2s  . c o  m*/
    for (int i = 0; i < nodes.getLength(); i++) {
        Node node = nodes.item(i);
        Node copyNode = newXmlDocument.importNode(node, true);
        root.appendChild(copyNode);
    }
    printXmlDocument(newXmlDocument);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    Document document = dbf.newDocumentBuilder().parse(new File("input.xml"));

    XPathFactory xpf = XPathFactory.newInstance();
    XPath xpath = xpf.newXPath();
    XPathExpression expression = xpath.compile("//data/user/username[text()='simple']");
    Node b13Node = (Node) expression.evaluate(document, XPathConstants.NODE);
    b13Node = b13Node.getParentNode();
    b13Node.getParentNode().removeChild(b13Node);

    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer();
    t.transform(new DOMSource(document), new StreamResult(System.out));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    Document document = dbf.newDocumentBuilder().parse(new File("input.xml"));

    XPathFactory xpf = XPathFactory.newInstance();
    XPath xpath = xpf.newXPath();
    XPathExpression expression = xpath.compile("//A/B[C/E/text()=13]");

    Node b13Node = (Node) expression.evaluate(document, XPathConstants.NODE);
    b13Node.getParentNode().removeChild(b13Node);

    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer();
    t.transform(new DOMSource(document), new StreamResult(System.out));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(true);/*from   w  w  w  . ja v  a 2  s .  c  o m*/
    DocumentBuilder builder = domFactory.newDocumentBuilder();
    Document dDoc = builder.parse("c:\\file.xml");
    XPath xPath = XPathFactory.newInstance().newXPath();
    xPath.setNamespaceContext(new UniversalNamespaceResolver(dDoc));
    String query = "//rss/channel/yweather:location/@city";
    XPathExpression expr = xPath.compile(query);
    Object result = expr.evaluate(dDoc, XPathConstants.STRING);
    System.out.println(result);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String xml = "<?xml version='1.0' encoding='UTF-8'?><users><user id='0' firstname='John'/></users>";

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = dbf.newDocumentBuilder();
    Document document = db.parse(new InputSource(new StringReader(xml)));

    XPathFactory xpf = XPathFactory.newInstance();
    XPath xpath = xpf.newXPath();
    Element userElement = (Element) xpath.evaluate("/users/user", document, XPathConstants.NODE);
    System.out.println(userElement.getAttribute("id"));
    System.out.println(userElement.getAttribute("firstname"));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
    docFactory.setNamespaceAware(true);//from   w w w.  j av  a  2s  . c  o  m
    DocumentBuilder builder;
    builder = docFactory.newDocumentBuilder();
    Document doc = builder.parse(CFG_FILE);
    XPathExpression expr = XPathFactory.newInstance().newXPath().compile(XPATH_FOR_PRM_MaxThread);
    Object result = expr.evaluate(doc, XPathConstants.NUMBER);
    if (result instanceof Double) {
        System.out.println(((Double) result).intValue());
    }

}