Java XML Attribute from Element getElementTextByAttr(Element modsroot, String nodename, String attrname, String attrvalue)

Description

Retrieves text of element by attribute value (e.g.

License

Open Source License

Declaration

public static String getElementTextByAttr(Element modsroot, String nodename, String attrname,
        String attrvalue) 

Method Source Code

//package com.java2s;
/**/*from w  w w .  ja  v a 2s  .c o m*/
 * Jafer Poject.
 * Copyright (C) 2005, Jafer Project, Oxford University.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

import org.w3c.dom.Attr;

import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
    /**
     * Retrieves text of element by attribute value (e.g. <identifier
     * type="issn">xxx </identifier>).
     */
    public static String getElementTextByAttr(Element modsroot, String nodename, String attrname,
            String attrvalue) {
        String str = "";
        NodeList list = modsroot.getElementsByTagName(nodename);
        for (int i = 0; i < list.getLength(); i++) {
            Node node = (Node) list.item(i);
            NamedNodeMap attrs = node.getAttributes();
            Attr attr = (Attr) attrs.getNamedItem(attrname);
            if (attr != null) {
                if (attr.getValue().equals(attrvalue)) {
                    str = getTextValue(node);
                    break;
                }
            }
        }
        return str;
    }

    /**
     * Get the text node from an element node.
     */
    public static String getTextValue(Node node) {
        StringBuffer sb = new StringBuffer("");
        NodeList list = node.getChildNodes();
        for (int i = 0; i < list.getLength(); i++) {
            if (list.item(i).getNodeType() == Node.TEXT_NODE) {
                sb.append(list.item(i).getNodeValue());
            }
        }
        //System.out.println("returning:"+sb.toString());
        return sb.toString();
    }
}

Related

1. getElementByAttr(NodeList elements, String attrName)
2. getElements(Element root, String tagName, String attrName)
3. getElementsByTagAndAttr(Element parent, String elemName, String attrName, String attrVal)
4. getElementStringValue(Element element, String attribute)
5. getElementStringValue(Element element, String attribute)
6. getElementValues(final String elementName, final String attributeValue, final InputStream is)
7. getFirstAttribute(Element elem, String name, String attrName)
8. getFloatAttribute(Element element, String name)
9. getFloatAttribute(String name, Element el)