package com.ss1.xml;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import org.dom4j.Document;

import org.dom4j.DocumentException;

import org.dom4j.DocumentHelper;

import org.dom4j.Element;

import org.dom4j.io.OutputFormat;

import org.dom4j.io.SAXReader;

import org.dom4j.io.XMLWriter;

public class Dom4jTest {

    public static void main(String[] args) throws IOException, DocumentException {

        /*Document document = DocumentHelper.createDocument();

        Element root = DocumentHelper.createElement("student");

        document.setRootElement(root);

        root.addAttribute("name", "zhangsan");

        Element helloElement = root.addElement("hello");

        Element worldElement = root.addElement("world");

        helloElement.setText("hello text");

        worldElement.setText("world text");

        XMLWriter xmlWriter = new XMLWriter();

        xmlWriter.write(document);

        /ss1/src/students.xml

        OutputFormat format = new OutputFormat("    ",true);

        XMLWriter xmlWriter2 = new XMLWriter(new FileOutputStream("student.xml"),format);

        xmlWriter2.write(document);

        */

        SAXReader saxReader = new SAXReader();

        Document document = saxReader.read(new File("test.xml"));

        Element rootElement = document.getRootElement();

        System.out.println(rootElement);

    }

}

package com.ss1.xml;

import java.io.File;

import java.util.Iterator;

import org.dom4j.Attribute;

import org.dom4j.Document;

import org.dom4j.DocumentException;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;

public class Dom4jXml {

    public static void main(String[] args) throws DocumentException {

        File file = new File("test.xml");

        SAXReader saxReader = new SAXReader();

        Document document = saxReader.read(file);

        Element rootElement = document.getRootElement();

        for(Iterator iterator = rootElement.elementIterator("students");iterator.hasNext();){

            Element element = (Element) iterator.next();

            Attribute nameAttribute = element.attribute("name");

            String name = nameAttribute.getValue();

            Attribute idAttribute = element.attribute("id");

            String id = idAttribute.getValue();

            System.out.println(name);

            System.out.println(id);

        }

    }

}