Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * The MIT License
 *
 * Copyright (C) 2007 Asterios Raptis
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

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.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class Main {
    /**
     * Gets the node list from the given xml file and the given xpath expression.
     * 
     * @param xml
     *            the xml
     * @param xpathExpression
     *            the xpath expression
     * @return the node list
     * @throws XPathExpressionException
     *             the x path expression exception
     * @throws ParserConfigurationException
     *             the parser configuration exception
     * @throws SAXException
     *             the sAX exception
     * @throws IOException
     *             Signals that an I/O exception has occurred.
     */
    public static NodeList getNodeList(final File xml, final String xpathExpression)
            throws XPathExpressionException, ParserConfigurationException, SAXException, IOException {
        final DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
        domFactory.setNamespaceAware(true);
        final DocumentBuilder builder = domFactory.newDocumentBuilder();
        final Document doc = builder.parse(xml);
        final XPath xpath = XPathFactory.newInstance().newXPath();
        final XPathExpression expr = xpath.compile(xpathExpression);

        final Object result = expr.evaluate(doc, XPathConstants.NODESET);
        final NodeList nodes = (NodeList) result;
        return nodes;
    }

    /**
     * Gets the node list from the given xml file and the given xpath expression.
     * 
     * @param xml
     *            the xml file as string.
     * @param xpathExpression
     *            the xpath expression as string.
     * @return the node list
     * @throws XPathExpressionException
     *             the x path expression exception
     * @throws ParserConfigurationException
     *             the parser configuration exception
     * @throws SAXException
     *             the sAX exception
     * @throws IOException
     *             Signals that an I/O exception has occurred.
     */
    public static NodeList getNodeList(final String xml, final String xpathExpression)
            throws XPathExpressionException, ParserConfigurationException, SAXException, IOException {
        final DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
        domFactory.setNamespaceAware(true);
        final DocumentBuilder builder = domFactory.newDocumentBuilder();
        final Document doc = builder.parse(xml);
        final XPath xpath = XPathFactory.newInstance().newXPath();
        final XPathExpression expr = xpath.compile(xpathExpression);

        final Object result = expr.evaluate(doc, XPathConstants.NODESET);
        final NodeList nodes = (NodeList) result;
        return nodes;
    }
}