Error handling in Struts

[Priya Jotwani]

Hi,

I have a JSP Page which has two dropdown fields. If the user selects something from first dropdown and doesn�t selects anything from the second dropdown, it displays me an error message saying �This field is required�. But now I have a scenario wherein, on selecting a particular value from first dropdown should not force the user to select something from the second dropdown (i.e he should be able to proceed even if he doesn�t selects anything from the second dropdown). How can I implement this is Struts ?

TIA,
Priya

[Marc Peabody]

Is your validation done in the form's validate method or is it done in the validation framework?

[Sheldon Fernandes]

Hi Priya,

Conditional cross-field validation like this is possible in Struts since version 1.1 which added the requiredif validator. This validation rule has been deprecated in favour of the new rule validwhen which has been added in version 1.2.0

For information and examples on using these validator rules check the Validator documentation on the struts site.

However, I think that these validators can be used only for server side validation, not client-side javascript validation.

Sheldon Fernandes

[Edit: I assumed you were talking about xml based validation provided by the validator framework]
[ September 29, 2004: Message edited by: Sheldon Fernandes ]

[Priya Jotwani]

I have validations in my validator.xml and have corresponding .properties file.