java操作XML

import java.io.FileWriter;import java.io.IOException;import java.util.Iterator;import org.dom4j.*;import org.dom4j.io.OutputFormat;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;public class Dom4jDmeo {static void readXML(String path){SAXReader reader=new SAXReader();//构建sax读取对象try {Document doc=reader.read(path);//获取文档对象Element root=doc.getRootElement();//获取根节点System.out.println("根节点:"+root.getName());Iterator it=root.elementIterator();//获取根节点下面的所有子节点while(it.hasNext()){Element el=(Element) it.next();//遍历出根节点下面的单个节点System.out.println(el.elementText("NO"));System.out.println(el.element("NO").attributeValue("DATE"));}} catch (DocumentException e) {e.printStackTrace();}}static void findXML(String path){SAXReader reader=new SAXReader();//构建sax读取对象try {Document doc=reader.read(path);//获取文档对象Element root=doc.getRootElement();//获取根节点Node node=doc.selectSingleNode("//Result/VALUE/NO");System.out.println(node.getText());} catch (DocumentException e) {e.printStackTrace();}}static void writeXML(){//构建xml输出对象try {XMLWriter writer=new XMLWriter(newFileWriter("d:/link.xml"));Document doc=DocumentHelper.createDocument();//创建文档对象Element root=doc.addElement("学生信息");root.addElement("学生").addElement("姓名").addAttribute("性别", "男").addText("张三");//构建子节点，属性值和显示文本root.addElement("学生").addElement("姓名").addAttribute("性别", "女").addText("历史");//构建子节点，属性值和显示文本writer.write(doc);//输出文档对象writer.close();} catch (IOException e) {e.printStackTrace();}}public static void main(String[] args) {//Dom4jDmeo.readXML("d:/text.xml");//Dom4jDmeo.writeXML();Dom4jDmeo.findXML("d:/text.xml");}}===================================================================== import java.io.*;import org.w3c.dom.*;import javax.xml.*;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;import javax.xml.transform.Source;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerConfigurationException;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import java.util.*;public class DomDemo {static void readXML(String path){//构建文件对象File file=new File(path);//构建文档对象工厂DocumentBuilderFactorydbf=DocumentBuilderFactory.newInstance();try {//构建文档对象DocumentBuilder db=dbf.newDocumentBuilder();Document dom=db.parse(file);//讲文件流转换为文档对象//遍历文档节点列表NodeList nodes=dom.getElementsByTagName("VALUE");NodeList list=dom.getChildNodes();//获取说有子节点for (int i = 0; i < list.getLength(); i++) {Node no=list.item(i);System.out.println(no.getChildNodes().getLength());}System.out.println("========================");for (int i = 0; i < nodes.getLength(); i++) {System.out.println(dom.getElementsByTagName("NO").item(i).getNode Name());//子节点名System.out.println(dom.getElementsByTagName("NO").item(i).getAttr ibutes().item(0).getNodeName());//子节点属性名System.out.println(dom.getElementsByTagName("NO").item(i).getAttr ibutes().item(0).getNodeValue());//子节点属性值System.out.println(dom.getElementsByTagName("NO").item(i).getFirs tChild().getNodeValue());//子节点项值System.out.println(dom.getElementsByTagName("ADDR").item(i).getFi rstChild().getNodeValue());//子节点项值}} catch (Exception e) {e.printStackTrace();}}static void writeXML(String path){File file=new File(path);DocumentBuilderFactorydbf=DocumentBuilderFactory.newInstance();try {DocumentBuilder db=dbf.newDocumentBuilder();Document doc=db.newDocument();//创建跟节点Element root=doc.createElement("学生信息");doc.appendChild(root);//创建子节点Element e1=doc.createElement("学生");e1.setAttribute("sex", "男");root.appendChild(e1);//创建子节点项Element ee1=doc.createElement("姓名");e1.appendChild(ee1);//将项绑定到子节点上Text name=doc.createTextNode("zhangsan");ee1.appendChild(name);//创建子节点项Element ee2=doc.createElement("年龄");e1.appendChild(ee1);//将项绑定到子节点上Text age=doc.createTextNode("20");ee2.appendChild(age);//构建事务转换工厂TransformerFactory tFactory=TransformerFactory.newInstance();//构建转换器Transformer transformer;try {transformer = tFactory.newTransformer();Source source=new DOMSource(doc);//构建数据源StreamResult result = new StreamResult(newjava.io.File(path));//构建xml输出流transformer.transform(source, result);//输出xml流文件} catch (Exception e) {e.printStackTrace();}} catch (ParserConfigurationException e) {e.printStackTrace();}}public static void main(String[] args) {DomDemo.writeXML("d:/links.xml");}}Subscriber:MaYongSubscription Code:ZLR8ZO-655444-54678656985359684Subscriber:LauChengSubscription Code:YLR8ZC-855550-6765665204902409Subscriber:accpSubscription Code:nLR8ZC-855550-6765855499710139Subscriber:AdministratorSubscription Code:NLR8ZC-855550-6552685393219112Subscriber:accptechSubscription Code:nLR8ZC-855550-6765855429037911。