Problem with a servlet

"frusciante" <>
Fri, 22 Feb 2008 18:42:55 +0100
Salve a tutti.
Il mio problema 8: Devo passare dei parametri da una form in html ad un
servlet.La servlet prende i parametri li confronta e mi da come uotput un
codice fiscale.Ora credo che il mio problema sia nel codice della servlet
perch8 eclipse mi segnala errore nella dichiarazione dei metodi httprequest
e response. Qualcuno riesce a risolvermi il problema??
Ora vi posto il codice:
      ecco l html questa 8 la pagina form.html

hello boy and girl.
I am italian and i not speak english very well.
I have a problem with a serlvet.
I hava a page html that send the parameters "nome" and "cognome" to a
The servlet receve the parameter and wrtie on video the "cf"
My eclipse sign the error on declaration of httprequest and http response .

This is a page .html
      <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
      <meta http-equiv="Content-Type" content="text/html;
      <title>Inserisci </title>
      <form method ="post" action ="">
      Nome Utente <input type="text" name="nome"> <br>
      Cognome Utente <input type="text" name="cognome"><br>
      <input type ="submit" value= "invia">

      this is

      import java.sql.Connection;
      import java.sql.DriverManager;
      import java.sql.ResultSet;
      import java.sql.SQLException;
      import javax.servlet.*; // sign error
      import javax.servlet.http.*; // error

      public class Cod_fisc {
         public void doGet(HttpServletRequest req, HttpServletResponse res)
// eclipse write error
          throws ServletException, IOException //
eclipse write error

            Connection con = null;
            String cf;
            String nome_reg=req.getParameter("nome");
            String cognome_reg=req.getParameter("cognome");

         catch(Exception e ){

         java.sql.PreparedStatement st =con.prepareStatement("Select cf from
utente where nome=? and cognome =?");

         ResultSet rs= st.executeQuery();
         while ({
            System.out.println("cf: " + rs.getString(1));

         rs.close(); // result set
         st.close(); // statement
       catch (SQLException e) {
          System.out.println("errore ");

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