ACCP4.0 Y2 XML 教学指导书源代码

import java.io.*; import org.w3c.dom.*; import org.w3c.dom.Node; import org.xml.sax.*; import javax.xml.parsers.*; public class Homework { public void create(Document doc) { Element root = doc.createElement("Catalog"); Element eProd = doc.createElement("products"); Element eId = doc.createElement("prod_id"); Element eName = doc.createElement("prod_name"); Element ePrice = doc.createElement("price"); Text tId = doc.createTextNode("a001"); Text tName = doc.createTextNode("实例"); Text tPrice = doc.createTextNode("100"); eProd.appendChild(eId).appendChild(tId); eProd.appendChild(eName).appendChild(tName); eProd.appendChild(ePrice).appendChild(tPrice); doc.appendChild(root).appendChild(eProd); } public void append(Document doc,Node e) { e.appendChild(doc.createElement("appendElement")); } public void insert(Document doc,Node e) { e.insertBefore(doc.createElement("insertElement"),e.getFirstChild()); } public void replace(Document doc,Node e) { e.replaceChild(doc.createElement("replaceElement"),e.getLastChild()); } public void remove(Document doc,Node e) { e.removeChild(e.getLastChild()); } public void printDOC(Document doc) { NodeList nl = doc.getElementsByTagName("*"); Element e; int len; len = nl.getLength(); for (int j=0;j < len;j++) { e = (Element)nl.item(j); System.out.print(e.getTagName()+":"); if (e.hasChildNodes()) System.out.print(e.getFirstChild().getNodeValue()); } System.out.println(); } static public void main(String[] argv) { try { DocumentBuilderFactory dbfactory = DocumentBuilderFactory.newInstance(); DocumentBuilder domparser = dbfactory.newDocumentBuilder(); Document doc = domparser.newDocument(); Homework hw = new Homework(); hw.create(doc); hw.append(doc,doc.getDocumentElement()); //测试 hw.insert(doc,doc.getDocumentElement().getFirstChild()); //测试 hw.replace(doc,doc.getDocumentElement().getFirstChild()); //测试 hw.remove(doc,doc.getDocumentElement().getFirstChild()); //测试 hw.printDOC(doc); } catch (ParserConfigurationException p) { System.out.println(p.toString()); } } }