实例：AJAX返回xml代码如何在网页中显示

PostingXMLExample.java
package javabean;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class PostingXMLExample extends HttpServlet
{
 protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
 {
  String xml=readXMLFromRequestBody(request);
  response.setContentType("text/xml");
  PrintWriter out=response.getWriter();
  out.println("Hope said the result is:<Br>"+xml);
  out.close();  
 }
 private String readXMLFromRequestBody(HttpServletRequest request)
 {
  StringBuffer xml=new StringBuffer();
  String line=null;
  try
  {
   BufferedReader reader=request.getReader();
   while((line=reader.readLine())!=null)
   {
    xml.append(line);
   }
  }
  catch (Exception e)
  {
   System.out.println(e.toString());
  }
  return xml.toString();
 }
}