Java XPath Find findNodeByXpath(String xpathExpression, String fileName)

Description

find Node By Xpath

License

Open Source License

Declaration

public static Node findNodeByXpath(String xpathExpression, String fileName) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2015 UNIT Information Technologies R&D Ltd
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors://w ww. j av a 2  s . c o m
 *     Ferhat Erata - initial API and implementation
 *     H. Emre Kirmizi - initial API and implementation
 *     Serhat Celik - initial API and implementation
 *     U. Anil Ozturk - initial API and implementation
 *******************************************************************************/

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Document;

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class Main {
    public static Node findNodeByXpath(String xpathExpression, String fileName) {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        dbf.setValidating(false);
        DocumentBuilder db;
        Document doc;
        try {
            db = dbf.newDocumentBuilder();
            doc = db.parse(new File(fileName));
            XPath xpath = XPathFactory.newInstance().newXPath();
            NodeList nodes = (NodeList) xpath.evaluate(xpathExpression, doc, XPathConstants.NODESET);
            for (int i = 0; i < nodes.getLength(); i++) {
                System.out.print(nodes.item(i).getNodeName() + " ");
            }
            if (nodes.getLength() > 1)
                return nodes.item(0);
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XPathExpressionException e) {
            e.printStackTrace();
        }
        return null;
    }
}

Related

1. findAll(Node node, String xpath)
2. findAll(Node root, String xPath)
3. findNode(String xPathExpression, Element root)
4. findNodeByXPath(Node base, String xpath)
5. findNodeByXPath(String xPathString, Object source)
6. findNodes(final Node node, final String expression)
7. findNodesByXPath(Node contextNode, String expression)
8. query(Node context, String query)