使用Java创建XML文件

import java.io.File; import java.io.StringWriter; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.DOMException; import org.w3c.dom.Document; import org.w3c.dom.Element; public class XMLDemo { public static void main(String[] args) {

try {

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder();

Document document = builder.newDocument();

//创建根目录

Element root = document.createElement("Languages"); root.setAttribute("cat", "it");

   //创建结点1

Element lan1 = document.createElement("lan");

lan1.setAttribute("id", "1");

  //创建结点1下属结点

Element name1 = document.createElement("name"); name1.setTextContent("Java"); Element ide1 = document.createElement("ide");

ide1.setTextContent("Eclipse");

        //下属结点加入结点1 lan1.appendChild(name1); lan1.appendChild(ide1);

                   //结点1加入根目录         

root.appendChild(lan1);

   //创建结点2

Element lan2 = document.createElement("lan");

lan2.setAttribute("id", "2");

//创建结点2下属结点

Element name2 = document.createElement("name"); name2.setTextContent("Swift"); Element ide2 = document.createElement("ide"); ide2.setTextContent("Xcode"); //下属结点加入结点2 lan2.appendChild(name2); lan2.appendChild(ide2);

   //结点2加入根目录   

root.appendChild(lan2);

                        //创建结点3

Element lan3 = document.createElement("lan");

lan3.setAttribute("id", "3");

//创建结点3下属结点

Element name3 = document.createElement("name"); name3.setTextContent("Xcode"); Element ide3 = document.createElement("ide"); ide3.setTextContent("Visual Studio"); //下属结点加入结点3 lan3.appendChild(name3); lan3.appendChild(ide3);

   //结点3加入根目录   

root.appendChild(lan3)

;

//根目录加入文件

document.appendChild(root);

   //文件转为字符串

TransformerFactory transformerFactory = TransformerFactory.newInstance(); Transformer transformer = transformerFactory.newTransformer(); StringWriter writer = new StringWriter();//方便网络传输 transformer.transform(new DOMSource(document), new StreamResult(writer)); System.out.println(writer.toString());

    //转为XML文件

transformer.transform(new DOMSource(document), new StreamResult(new File("Languages.xml"))); } catch (DOMException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ParserConfigurationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (TransformerConfigurationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (TransformerException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }