Java操作XML文件的例子

XML DOM教程

XML文件(文件名:languages.xml)

<?xml version="1.0" encoding="UTF-8"?>
<languages cat ="it">
        <lan id = "1">
            <name>Java</name>
            <ide>Eclipce</ide>
        </lan>
        <lan id ="2">
            <name>Swift</name>
            <ide>Xcode</ide>
        </lan > 
        <lan id ="3">
            <name>C#</name>
            <ide>Visual Studio</ide>
        </lan>
</languages>

一个Java操作XML的简单例子

package TestReadXML;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

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;

public class TestReadXml {
    public static void main(String[] args) {

        try {
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder =  factory.newDocumentBuilder();
            try {
                Document document = builder.parse(new File("languages.xml"));
                Element root = document.getDocumentElement();
                System.out.println("cat = " +  root.getAttribute("cat"));
                NodeList list = root.getElementsByTagName("lan");
                for(int i=0 ;i<list.getLength(); i++){
                    Element lan = (Element) list.item(i);

                    System.out.println("---------");
                    System.out.println("id = " + lan.getAttribute("id"));

                    NodeList nodList = lan.getChildNodes();

                    for(int j =0 ;j<nodList.getLength(); j++){
                    Node node =  nodList.item(j);
                    if(node instanceof Element)
                        System.out.println(node.getNodeName()+ " = " +node.getTextContent());
                     }      
                }       
            } catch (SAXException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }

        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        }
    }

}