Java XML Child Element Text getChildElementText(Element elm, String name, String defaultValue)

Description

get Child Element Text

License

Open Source License

Declaration

public static String getChildElementText(Element elm, String name, String defaultValue) 

Method Source Code

//package com.java2s;
/**// w ww. j  a va 2s  .  co  m
 * Copyright (c) 2012 centeractive ag. All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */

import org.w3c.dom.*;

public class Main {
    public static String getChildElementText(Element elm, String name) {
        Element child = getFirstChildElement(elm, name);
        return child == null ? null : getElementText(child);
    }

    public static String getChildElementText(Element elm, String name, String defaultValue) {
        String result = getChildElementText(elm, name);
        return result == null ? defaultValue : result;
    }

    public static Element getFirstChildElement(Element elm) {
        return getFirstChildElement(elm, null);
    }

    public static Element getFirstChildElement(Element elm, String name) {
        if (elm == null)
            return null;

        NodeList nl = elm.getChildNodes();
        for (int c = 0; c < nl.getLength(); c++) {
            Node node = nl.item(c);
            if (node.getNodeType() == Node.ELEMENT_NODE && (name == null || node.getNodeName().equals(name)))
                return (Element) node;
        }

        return null;
    }

    static public String getElementText(Element elm) {
        Node node = elm.getFirstChild();
        if (node != null && node.getNodeType() == Node.TEXT_NODE)
            return node.getNodeValue();

        return null;
    }

    static public String getNodeValue(Node node) {
        if (node == null)
            return null;

        if (node.getNodeType() == Node.ELEMENT_NODE)
            return getElementText((Element) node);
        else if (node.getNodeType() == Node.DOCUMENT_FRAGMENT_NODE)
            return getFragmentText((DocumentFragment) node);
        else
            return node.getNodeValue();
    }

    static public String getFragmentText(DocumentFragment elm) {
        Node node = elm.getFirstChild();
        if (node != null && node.getNodeType() == Node.TEXT_NODE)
            return node.getNodeValue();

        return null;
    }
}

Related

1. getChildElementsTextSet(Element parentElement, String tagName)
2. getChildElementText(Element element, String name)
3. GetChildElementText(Element element, String name, String defaultValue)
4. getChildElementText(Element elm, String name, String defaultValue)
5. getChildElementText(Element parentElement, String tagName)
6. getChildElementText(final Element elParent, final String childTag)
7. getChildElementText(final Element parent, final String childName, final String defaultText)