public class CustForm extends ActionForm {
String phone;
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
public class AddCustAction extends Action {
CustomerService custserv = null;
@Override
public ActionForward execute(
ActionMapping actionMapping,
ActionForm actionForm,
HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
CustForm form = (CustForm) actionForm;
try {
String phone = form.getPhone();
custserv.addCust(0, phone, "foo");
return actionMapping.
findForward("success");
} catch (ValidationException e) {
return actionMapping.
findForward("invaliddata");
}
}
}
public interface CustomerService {
void addCust(int i, String phone, String s)
throws ValidationException;
}
public class CustomerServiceImpl
implements CustomerService {
public void addCust(int i,
String phone,
String s)
throws ValidationException {
PreparedStatement dbstmt = “INSERT …”;
if (!justnumbers(phone))
throw new ValidationException();
try {
dbstmt.setInt(1, i);
dbstmt.setString(3, phone);
dbstmt.setString(4, s);
dbstmt.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException();
}
}
static boolean justnumbers(String s) {
return s.matches("[0-9]*");
}
}
