Java tutorial
//package com.java2s; /* * JBoss, Home of Professional Open Source * Copyright 2016 Red Hat Inc. and/or its affiliates and other * contributors as indicated by the @author tags. All rights reserved. * See the copyright.txt in the distribution for a full listing of * individual contributors. * * This 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 software 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 software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class Main { public static String getChildElementBody(Element element, String tagName) { return getChildElementBody(element, tagName, true); } public static String getChildElementBody(Element element, String tagName, boolean required) { Element elt = getChildElement(element, tagName, required); return (elt != null) ? getBody(elt) : null; } public static Element getChildElement(Element parent, String tagName) { return getChildElement(parent, tagName, false); } public static Element getChildElement(Element parent, String tagName, boolean required) { NodeList nodes = parent.getElementsByTagName(tagName); if (nodes == null || nodes.getLength() == 0) { if (required) { throw new IllegalStateException(String.format("Missing tag %s in element %s.", tagName, parent)); } else { return null; } } return (Element) nodes.item(0); } public static String getBody(Element element) { NodeList nodes = element.getChildNodes(); if (nodes == null || nodes.getLength() == 0) return null; Node firstNode = nodes.item(0); if (firstNode == null) return null; String nodeValue = firstNode.getNodeValue(); return replace(nodeValue); } public static String replace(String value) { return value; // not needed? } }