Java XML Child Element Text getChildText(Element elem, String childTagName)

Description

Return content of child element with given tag name.

License

Apache License

Parameter

Parameter	Description
elem	a parameter
childTagName	a parameter

Return

content of child element or null if no child element with this name was found

Declaration

public static String getChildText(Element elem, String childTagName) 

Method Source Code

//package com.java2s;
/*//from   ww  w .  j a va2 s . co  m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

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

public class Main {
    /**
     * Return content of child element with given tag name.
     * If more than one children with this name are present, the content of the last
     * element is returned.
     *
     * @param elem
     * @param childTagName
     * @return content of child element or null if no child element with this name was found
     */
    public static String getChildText(Element elem, String childTagName) {
        NodeList nodeList = elem.getElementsByTagName(childTagName);
        int len = nodeList.getLength();
        if (len == 0) {
            return null;
        }

        return getElementText((Element) nodeList.item(len - 1));

    }

    public static String getElementText(Element elem) {
        StringBuilder buf = new StringBuilder();
        NodeList nodeList = elem.getChildNodes();
        for (int i = 0, len = nodeList.getLength(); i < len; i++) {
            Node n = nodeList.item(i);
            if (n.getNodeType() == Node.TEXT_NODE) {
                buf.append(n.getNodeValue());
            } else {
                //TODO see jsf-samples
                //throw new FacesException("Unexpected node type " + n.getNodeType());
            }
        }
        return buf.toString();
    }
}

Related

1. getChildElementValue(Element parent, String name)
2. getChildElementValue(Element parentElm, String elementName, String defaultValue)
3. getChildElementValueByTagName(Element ele, String childEleName)
4. getChildElementValueByTagName(Element ele, String childEleName)
5. getChildElementValueByTagName(Element parentElement, String childTag)
6. getChildText(Element element, String defaultValue)
7. getChildText(Element element, String nodeName)
8. getChildText(Element element, String tag)
9. getChildText(Element element, String tag)