初级问题

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import org.jdom.*;
import org.jdom.output.*;
import org.jdom.input.*;public class servlet1 extends HttpServlet{

public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException{
String tagname="a";
ServletOutputStream out = resp.getOutputStream();
try{

SAXBuilder sb = new SAXBuilder();
Document doc = sb.build(new FileInputStream("C:/Program Files/Apache Group/Tomcat 4.1/webapps/test/test.xml"));
Element root = doc.getRootElement(); 
tagname=root.getName();

resp.setContentType("text/html"); 
out.println("<html>"); 
out.println("<head><title>Hello World</title></head>"); 
out.println("<body>"); 
out.println("<h1>"+tagname+"</h1>"); 
out.println("</body></html>");
}
catch(JDOMException e){
//System.out.println("jdom exception");
e.printStackTrace();
}

}}