案例：生成XML文件

生成XML方法一：
	/**
	 * 测试生成XML文件
	 */
	public static void createXMLFile() {
		Document document = DocumentHelper.createDocument();
		Element booksElement = document.addElement("books");
		booksElement.addComment("This is a test for dom4j, holen, 2004.9.11");
		Element bookElement = booksElement.addElement("book");
		bookElement.addAttribute("show", "yes");
		Element titleElement = bookElement.addElement("title");
		titleElement.setText("Dom4j Tutorials");
		bookElement = booksElement.addElement("book");
		bookElement.addAttribute("show", "yes");
		titleElement = bookElement.addElement("title");
		titleElement.setText("Lucene Studing");
		bookElement = booksElement.addElement("book");
		bookElement.addAttribute("show", "no");
		titleElement = bookElement.addElement("title");
		titleElement.setText("Lucene in Action");
		Element ownerElement = booksElement.addElement("owner");
		ownerElement.setText("O'Reilly");

		try {
			XMLWriter writer = new XMLWriter(new FileWriter(new File("d://jwp.xml")));
			writer.write(document);
			writer.close();
		} catch (Exception ex) {
			ex.printStackTrace();
		}

		// String s = document.asXML();
		// System.out.println(s);
		// System.out.println();
		// System.out.println(s.getBytes().length);
		// String ss = new String(s.getBytes());
		// System.out.println(ss);
		// byte[] b = new byte[s.length()];

		// System.out.println("十六进制："+ByteUtils.byteToHexString(s.getBytes()));
	}


生成的文件如下：
<?xml version="1.0" encoding="UTF-8"?>
<books>
	<!--This is a test for dom4j, holen, 2004.9.11-->
	<book show="yes">
		<title>Dom4j Tutorials</title>
	</book>
	<book show="yes">
		<title>Lucene Studing</title>
	</book>
	<book show="no">
		<title>Lucene in Action</title>
		</book>
	<owner>O'Reilly</owner>
</books>