Probleme d´affichage d´un array list par webservice

Bonjour,

J´ai crée un webservice qui permet d´afficher quelques parametres en fonction d´un login,les parametres sont du type ArrayList.
Mais lorsque j´execute le code.j´obtient ce resultat :

Code:

java.util.List : "[]"

Voici mon code

Code:

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@WebMethod(operationName = "Affichage")
    public ArrayList AffichageParametres(@WebParam(name = "login")
    String login) {
 
    ArrayList log = new ArrayList();
        try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection con =
            (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/bdhexabyte",
"root", "");
             PreparedStatement st =
            con.prepareStatement
      ("SELECT C.nom, C.zip, C.ville, C.cin, C.email, Cat.nom, Ld.debit, RS.nom "+
                      " FROM com_srv5 CS, client C, hde_light_debits Ld, categories_hde Cat,ref_srv_hde RS " +
                    "WHERE CS.id_client = C.id"+
                     "AND CS.id_categories_hde = Cat.id"+
                     "AND CS.id_adsl_light_debits = Ld.id"+
                     " AND Cat.id_ref_srv_hde = RS.id "+
                     "AND CS.login like ? ");
             st.setString(1, login);
            ResultSet rs = st.executeQuery() ;
             while (rs.next())
            { log.add(rs.getString("C.nom"));
              log.add(rs.getInt("C.zip"));
               log.add(rs.getString("C.ville"));
              log.add(rs.getInt("C.cin"));
              log.add(rs.getString("Cat.nom"));
              log.add(rs.getString("Ld.debit"));
 
              log.add(rs.getString("RS.nom"));
 
      }
        }
 
        catch(Exception e)
        {
            e.printStackTrace();
        }
        return log;
    }
   }