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package com.dao;

import java.io.FileWriter;

import java.io.IOException;

import org.dom4j.Document;

import org.dom4j.DocumentHelper;

import org.dom4j.Element;

import org.dom4j.io.OutputFormat;

import org.dom4j.io.XMLWriter;

public class WriteXML {

    public static void main(String[] args) {

        write();

    }

    public static void

        //1、現在記憶體構造docuement物件

        Document document=DocumentHelper.createDocument();

        //2、構造element物件  users    user name pass  user   name pass

        Element rootElement=DocumentHelper.createElement("users"); 

        Element userElement1=DocumentHelper.createElement("user");

        Element userElement2=DocumentHelper.createElement("user");

        Element userElement1name=DocumentHelper.createElement("name");

        Element userElement1password=DocumentHelper.createElement("password");

        Element userElement2name=DocumentHelper.createElement("name");

        Element userElement2password=DocumentHelper.createElement("password");

        //設定元素值，元素之間的關係

        userElement1name.setText("admin");

        userElement1password.setText("123");

        userElement2name.setText("root");

        userElement2password.setText("456");

        userElement1.addAttribute("id", "001");

        userElement2.addAttribute("id", "002");

        document.add(rootElement);

        rootElement.add(userElement1);

        rootElement.add(userElement2);

        userElement1.add(userElement1name);

        userElement1.add(userElement1password);

        userElement2.add(userElement2name);

        userElement2.add(userElement2password);

        //3、輸出硬碟

        try {

            OutputFormat outputFormat=OutputFormat.createPrettyPrint() ;

            outputFormat.setEncoding("gb2312");

            XMLWriter writer=new XMLWriter(new FileWriter("./xml/users.xml"),outputFormat);

            writer.write(document);

            writer.flush();

            writer.close();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

}

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<users>

  <user id="001">

    <name>admin</name>

    <password>123</password>

  </user>

  <user id="002">

    <name>root</name>

    <password>456</password>

  </user>

</users>