Ajax 捕页面

Ajax 抓页面
   <tr>
    <td id="td">
    </td>
   </tr>
  </table>
</body>
</html>
---------------------------------ajaxServlet.java-----------------------------------------------------
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class ajaxServlet extends HttpServlet{
private static final String CONTENT_TYPE = "text/xml; charset=gb2312";
public void init() throws ServletException{}
public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException
{
  response.setContentType(CONTENT_TYPE);
  PrintWriter out = response.getWriter();
  String action = request.getParameter("action");
  if (("send").equals(action))
  {
   StringBuffer sb = new StringBuffer("<type>");
   sb.append("<type_name>AA</type_name>");
   sb.append("<type_name>BB</type_name>");
   sb.append("<type_name>CC</type_name>");
   sb.append("<type_name>DD</type_name>");
   sb.append("</type>");
   out.write(sb.toString());
   out.close();
  }
}
}