- 我们以以下的xml文档为例:
- <?xml version="1.0" encoding="UTF-8" standalone="no"?>
- <employees>
- <employee>
- <name>Voishion</name>
- <sex>M</sex>
- <age>23</age>
- </employee>
- </employees>
- 首先定义一个行为规范的接口:
- package com.pb.viewer.xml;
- /**
- * 定义XML文件的建立与解析
- * @author Voishion
- * @version 2012.12.28
- */
- public interface XMLDocument {
- /**
- * 建立XML文档
- * @param fileName
- */
- public void createXML(String fileName);
- /**
- * 解析XML文档
- * @param fileName
- */
- public void parserXML(String fileName);
- }
- 下面是接口的实现,需要注意的是我们一般创建的xml文件都在项目的src文件目录下:
- package com.pb.viewer.xml;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.PrintWriter;
- import javax.xml.parsers.DocumentBuilder;
- import javax.xml.parsers.DocumentBuilderFactory;
- import javax.xml.parsers.ParserConfigurationException;
- import javax.xml.transform.OutputKeys;
- import javax.xml.transform.Transformer;
- import javax.xml.transform.TransformerFactory;
- import javax.xml.transform.dom.DOMSource;
- import javax.xml.transform.stream.StreamResult;
- import org.apache.log4j.Logger;
- import org.w3c.dom.Document;
- import org.w3c.dom.Element;
- import org.w3c.dom.Node;
- import org.w3c.dom.NodeList;
- import org.xml.sax.SAXException;
- /**
- * DOM生成与解析XML文档实现
- * @author Voishion
- * @date 2012.12.28
- */
- public class XMLDocumentImpl implements XMLDocument{
- private static Logger log = Logger.getLogger(XMLDocumentImpl.class);
- private DocumentBuilder builder;
- private Document document;
- public XMLDocumentImpl(){
- try {
- DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
- this.builder = dbf.newDocumentBuilder();
- this.document = this.builder.newDocument();
- } catch (ParserConfigurationException e) {
- log.error(e.getMessage());
- }
- }
- /**
- * 解析指定文件名的XML文件
- */
- @Override
- public void parserXML(String fileName) {
- try {
- Document document = this.builder.parse(Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName));
- NodeList employess = document.getChildNodes();
- for(int i = 0; i < employess.getLength(); i++){
- Node employee = employess.item(i);
- NodeList employeeInfo = employee.getChildNodes();
- for(int j = 0; j < employeeInfo.getLength(); j++){
- Node node = employeeInfo.item(j);
- NodeList employeeMeta = node.getChildNodes();
- for(int k = 0; k < employeeMeta.getLength(); k++){
- System.out.println(employeeMeta.item(k).getNodeName()+":"+employeeMeta.item(k).getTextContent());
- }
- }
- }
- log.fatal("解析"+fileName+"完毕!");
- } catch (SAXException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- /**
- * 创建指定文件名的XML文件
- */
- @Override
- public void createXML(String fileName) {
- Element root = this.document.createElement("employees");
- this.document.appendChild(root);
- //employee Tag
- Element employee = this.document.createElement("employee");
- //name Tag
- Element name = this.document.createElement("name");
- name.appendChild(this.document.createTextNode("Voishion"));
- employee.appendChild(name);
- //sex Tag
- Element sex = this.document.createElement("sex");
- sex.appendChild(this.document.createTextNode("M"));
- employee.appendChild(sex);
- //age Tag
- Element age = this.document.createElement("age");
- age.appendChild(this.document.createTextNode("23"));
- employee.appendChild(age);
- //employee Tag Add root Tag
- root.appendChild(employee);
- TransformerFactory tf = TransformerFactory.newInstance();
- try{
- Transformer transformer = tf.newTransformer();
- DOMSource source = new DOMSource(document);
- transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
- transformer.setOutputProperty(OutputKeys.INDENT, "yes");
- File file = new File(new File(".\\\\src").getCanonicalPath()+"\\\\"+fileName);
- FileOutputStream fos = new FileOutputStream(file);
- PrintWriter pw = new PrintWriter(fos);
- StreamResult result = new StreamResult(pw);
- transformer.transform(source, result);
- log.fatal(fileName + "生成XML文件成功!");
- }catch (Exception e) {
- log.error(e.getMessage());
- }
- }
- }
- 下面是测试类,需要注意的是当创建xml文件完成以后要对整个项目都刷新一次,才能看见创建到的xml文件:
- package com.pb.viewer.xml;
- public class XMLTest {
- XMLDocument document;
- public void createDOMXML(){
- document = new XMLDocumentImpl();
- document.createXML("employee.xml");
- }
- public void parserDOMXML(){
- document = new XMLDocumentImpl();
- document.parserXML("employee.xml");
- }
- /**
- * @param args
- */
- public static void main(String[] args) {
- XMLTest test = new XMLTest();
- test.createDOMXML();
- // test.parserDOMXML();
- }
- }
- 至此基于DOM的xml文件的创建与解析已全部完成,欢迎提出升级意见,TKS
- //该片段来自于http://www.codesnippet.cn/detail/080420149268.html
来源: http://www.codesnippet.cn/detail/080420149268.html