ActionForm objects are reused. A new one may not necessarily be
created every time a form is submitted... Struts will try and reuse
one from a pool of ActionForm objects.
If there's a free one, it calls reset() before populating it in the
controller with form values and hands it to your action.
If there's no free one, it creates a new one, calls reset(), then
populates it with form values and hands it to your Action.
You want to "reset" all of your ActionForm's fields to empty or
nothing, or whatever you want the default value to be if the HTTP
request doesn't include any parameters. It's a best practice to do
every field, even if all of your HTML forms have fields for each of
the attributes... and even if they do, HTTP checkboxes are only
included in parameters if they're checked... if they're unchecked then
your HTTP request won't contain that parameter.
On 5/29/06, Miguel Galves <[EMAIL PROTECTED]> wrote:
Hi,
can someone tell exactly in which cases the ActionForm.reset() method
is called ? More specifically, when an action or a erro handler redirects
the system to a specific DispatchAction method, as showed in the code
below, dos struts reset the form ?
public class MyExceptionHandler extends ExceptionHandler {
public ActionForward execute(Exception error,
ExceptionConfig ec,
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws
ServletException {
// create action forward
ActionForward forward = new ActionForward(mapping.getPath() +
".do?action=error");
ex.printStackTrace();
if (error instanceof AuthorizationException || error instanceof
AuthenticationException)
return (mapping.findForward("logon"));
return forward;
}
}
--
Miguel Galves - Engenheiro de Computação
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