java操作XML.doc

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 voidwriteXML()/构建xml输出对象try XMLWriter writer=new XMLWriter(new FileWriter(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.*;importorg.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DocumentBuilderFactory dbf=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).getNodeName();/子节点名System.out.println(dom.getElementsByTagName(NO).item(i).getAttributes().item(0).getNodeName();/子节点属性名System.out.println(dom.getElementsByTagName(NO).item(i).getAttributes().item(0).getNodeValue();/子节点属性值System.out.println(dom.getElementsByTagName(NO).item(i).getFirstChild().getNodeValue();/子节点项值System.out.println(dom.getElementsByTagName(ADDR).item(i).getFirstChild().getNodeValue();/子节点项值 catch (Exception e) e.printStackTrace();static void writeXML(String path)File file=new File(path);DocumentBuilderFactory dbf=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(new java.io.File(path);/构建xml输出流transformer.