dom4j通过response输出xml

<%@ page import="org.dom4j.io.XMLWriter"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" import="org.dom4j.*"%>
<%
	Document document = DocumentHelper.createDocument();
	Element root = document.addElement( "root" );
	
	Element author1 = root.addElement( "author" )
	    .addAttribute( "name", "James" )
	    .addAttribute( "location", "UK" )
	    .addText( "James Strachan" );
	
	Element author2 = root.addElement( "author" )
	    .addAttribute( "name", "Bob" )
	    .addAttribute( "location", "US" )
	    .addText( "Bob McWhirter" );
	
	response.setContentType("text/xml;charset=utf-8");
	response.setHeader("cache-control", "no-cache");
	
	XMLWriter w = new XMLWriter(response.getWriter());
	w.write(document);
	w.close();	
%>