public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  response.setContentType("text/xml; charset=GBK");
       response.setHeader("Cache-Control", "no-cache");
  response.setContentType("text/html; charset=GBK");
  PrintWriter out = response.getWriter();
   out.println("<?xml version=\"1.0\" encoding=\"gb2312\"?>");
        out.println("<root>");
           try
           {
          ArrayList  list=(ArrayList)new disaster().getdisaster();
          //Ñ­»·µÃµ½¼¯ºÏÖеļǼ¼¯
         for(int i=0;i<list.size();i++) {
               out.println("<result>");  
             disaster dis= (disaster)list.get(i); //¾ÍÔÚÕâ¸öµØ·½±¨´í£¨±¨µÄ´íÎóÊÇ£ºjava.lang.ClassCastException: sun.jdbc.odbc.JdbcOdbcResultSet£©
             //ÉèÖÃxmlÖÐÔªËصÄÖµ        ÎÒºǫ́Á¬µÄÊÇaccess  disasterÕâ¸öÊÇÓû§×Ô¶¨ÒåÀà¡£ÎÒÒÔÇ°Á¬oracleÒ²ÊÇÕâÑù×öµÄûʲô´íÎóѽ£¬²»ÖªµÀÁ¬access¾Í±¨Õâ¸ö£¬ÕÒ²»µ½Ô­Òò
              out.println("<dis_id>" + dis.getDis_id() + "</dis_id>");
             out.println("<dis_name>" + dis.getDis_name()+ "</dis_name>");
             out.println("<dis_lon>" + dis.getDis_lon()+ "</dis_lon>");
               out.println("<dis_lat>" + dis.getDis_lat() + "</dis_lat>");
              out.println("</result>");
           }
           out.println("</root>");
           }
           catch(Exception e)
           {
            e.printStackTrace();
           }
  out.close();
 }