Example usage for javax.xml.xpath XPathFactory newInstance

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 NodeList getNogeList(String path, Node node) throws RuntimeException {
    path = path.trim();//  w w  w.j av a2 s .  c o m
    try {
        XPath xp = XPathFactory.newInstance().newXPath();
        XPathExpression expr = xp.compile(path);

        NodeList lst = (NodeList) expr.evaluate(node, XPathConstants.NODESET);
        return lst;

    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }
}

From source file:Main.java

static public ArrayList<Element> selectElements(Element element, String xpathExpression) throws Exception {
    ArrayList<Element> resultVector = new ArrayList<Element>();
    if (element == null) {
        return resultVector;
    }/*from  w  ww.  j  a  va2  s  .  co  m*/
    if (xpathExpression.indexOf("/") == -1) {
        NodeList nodeList = element.getChildNodes();
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node node = nodeList.item(i);
            if (node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals(xpathExpression)) {
                resultVector.add((Element) node);
            }
        }
    } else {
        XPath xpath = XPathFactory.newInstance().newXPath();
        NodeList nodes = (NodeList) xpath.evaluate(xpathExpression, element, XPathConstants.NODESET);

        for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);
            resultVector.add((Element) node);
        }
    }
    return resultVector;
}

From source file:Main.java

public static XPath buildXPath(NamespaceContext namespaceContext) {
    XPath xPath = XPathFactory.newInstance().newXPath();
    xPath.setNamespaceContext(namespaceContext);
    return xPath;
}

From source file:Main.java

public static String extractValue(String xml, String xpathExpression) {
    String actual;/*  ww  w  .ja  v a  2  s.c o m*/
    try {
        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        documentBuilderFactory.setNamespaceAware(true);
        documentBuilderFactory.setIgnoringElementContentWhitespace(true);
        DocumentBuilder docBuilder = documentBuilderFactory.newDocumentBuilder();

        byte[] bytes = xml.getBytes("UTF-8");
        InputStream inputStream = new ByteArrayInputStream(bytes);
        Document doc = docBuilder.parse(inputStream);
        XPathFactory xPathFactory = XPathFactory.newInstance();
        XPath xpath = xPathFactory.newXPath();

        actual = xpath.evaluate(xpathExpression, doc, XPathConstants.STRING).toString();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }

    return actual;
}

From source file:Main.java

public static Vector<HashMap> xmlToVector222(InputStream is, String xpath) {
    try {/*from w  ww .  j  a va  2  s.c o  m*/
        XPathFactory factory = XPathFactory.newInstance();
        XPath xPath = factory.newXPath();
        InputSource inputSource = new InputSource(is);

        NodeList nodes = (NodeList) xPath.evaluate(xpath, inputSource, XPathConstants.NODESET);
        Vector<HashMap> vector = new Vector<HashMap>();

        for (int x = 0; x < nodes.getLength(); x++) {
            NodeList nodeList = nodes.item(x).getChildNodes();
            HashMap hashmap = new HashMap();
            for (int y = 0; y < nodeList.getLength(); y++) {
                Node node = nodeList.item(y);
                if (!node.getNodeName().equals("#text")) {
                    hashmap.put(node.getNodeName(), node.getTextContent());
                }
            }
            vector.add(hashmap);
        }
        return vector;
    } catch (Exception ex) {
        ex.printStackTrace();
        return new Vector();
    }
}

From source file:Main.java

public static NodeList getComponentsWithAttribute(Node xmlDocument, String attribute)
        throws XPathExpressionException {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    XPathExpression expr = null;/*from   w  w w . java  2  s. c o  m*/
    NodeList n1 = null;
    expr = xpath.compile("//*[@" + attribute + "]");
    n1 = (NodeList) expr.evaluate(xmlDocument, XPathConstants.NODESET);
    return n1;

}

From source file:Main.java

public static List<Node> selectMultipleNodes(String expression, Node node, NamespaceContext namespaceContext)
        throws XPathException {
    XPath xpath = XPathFactory.newInstance().newXPath();
    xpath.setNamespaceContext(namespaceContext);
    NodeList nodeList = (NodeList) xpath.evaluate(expression, node, XPathConstants.NODESET);
    List<Node> nodes = new ArrayList<Node>();
    int nodeCount = nodeList.getLength();
    for (int i = 0; i < nodeCount; i++) {
        nodes.add(nodeList.item(i));//from   www  .j  a  v a 2s  . c o  m
    }
    return nodes;
}

From source file:Main.java

static public Element selectSingleElement(Element element, String xpathExpression) throws Exception {
    if (xpathExpression.indexOf("/") == -1) {
        NodeList nodeList = element.getChildNodes();
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node node = nodeList.item(i);
            if (node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals(xpathExpression)) {
                return (Element) node;
            }//  w  w  w . ja va 2  s. c o m
        }
        //  NodeList nodes = element.getElementsByTagName(xpathExpression);
        //  if (nodes.getLength() > 0) {
        //      return (Element) nodes.item(0);
        //  } else {
        return null;
        //  }
    } else {
        XPath xpath = XPathFactory.newInstance().newXPath();
        Element node = (Element) xpath.evaluate(xpathExpression, element, XPathConstants.NODE);
        return node;
    }
}

From source file:Main.java

public static Object execXPath(org.w3c.dom.Node node, String pattern, QName xPathConstantsType)
        throws Exception {
    return XPathFactory.newInstance().newXPath().compile(pattern).evaluate(node, xPathConstantsType);
}

From source file:Main.java

public static Node selectSingleNode(String express, Object source) {
    Node result = null;//from   w ww. ja  v a2s  .com
    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    try {
        result = (Node) xpath.evaluate(express, source, XPathConstants.NODE);
    } catch (XPathExpressionException e) {
        e.printStackTrace();
    }

    return result;
}