【自动化__持续集成】___java___XML__DOM改
一、代码如下
package com.wujianbo.five; import java.io.File; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathConstants; import javax.xml.xpath.XPathFactory; import org.w3c.dom.Document; import org.w3c.dom.Element; public class Deom10 { public static void main(String[] args) throws Exception { // TODO Auto-generated method stub Deom10 deom10= new Deom10(); deom10.modifyXmlByDom(); } private void modifyXmlByDom() throws Exception { // TODO Auto-generated method stub DocumentBuilderFactory dbf= DocumentBuilderFactory.newInstance(); dbf.setIgnoringElementContentWhitespace(true); String xmlName= System.getProperty("user.dir") + "\\data\\Students.xml"; DocumentBuilder db= dbf.newDocumentBuilder(); Document doc= db.parse(xmlName); //System.out.println(doc); Element root= doc.getDocumentElement(); //System.out.println(root); XPathFactory xpFactory= XPathFactory.newInstance(); XPath xpath= xpFactory.newXPath(); Element node= (Element)xpath.evaluate("/cl4ass/student[@sequence='2']", root, XPathConstants.NODE); node.getElementsByTagName("degree").item(0).setTextContent("研究生"); TransformerFactory factory= TransformerFactory.newInstance(); Transformer former= factory.newTransformer(); former.transform(new DOMSource(doc), new StreamResult(new File(xmlName))); } }