XmlTest.java

import java.io.*;

import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;

import org.w3c.dom.*;


public class XmlTest {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
    
      // ファクトリ生成
      DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
      // ビルダー生成
      DocumentBuilder builder = factory.newDocumentBuilder();

      // ファイル読み込み
      File f = new File("test.xml");
      Document doc = builder.parse(f);
	
      // ルート要素の取得
      Element root = doc.getDocumentElement();
      System.out.println(root.getTagName());
	
      // 子要素の取得
      NodeList children = root.getChildNodes();
	
    for (int i = 0; i < children.getLength(); i++) {
        Node child = children.item(i);
        if (child instanceof Element) {
          Element childElement = (Element) child;
          System.out.println(childElement.getTagName());
          System.out.println(childElement.getAttribute("xxx"));
        }
    }

    // ここから出力のソース
    TransformerFactory tfFac = TransformerFactory.newInstance();
    Transformer tf = tfFac.newTransformer();
    
    DOMSource source = new DOMSource(doc);
    File outFile = new File("test_out.xml");
    FileOutputStream fos = new FileOutputStream(outFile);
    StreamResult result = new StreamResult(fos);
    tf.transform(source, result);
	
    }
}