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From Arjuna Bandara <>
Subject Re: Struts2 Checkboxlist
Date Sat, 02 Feb 2019 03:30:30 GMT

As I understand, you need to modify previous Array before saving.

Have you tried Session variable ?



On Sat, 2 Feb 2019 3:18 am Prasanth, <> wrote:

> Hi,
> I am using a checkboxlist on a jsp page which corresponds to a ArrayList
> in the form class, which is used to store form data from a multi page
> wizard. I am using scope interceptor to store the form
> class in session so that the data persists as the user navigates the
> wizard. When the user selects some check boxes it is correctly populated in
> the form class but if the user navigates back in the
> wizard and unchecks the check box (non of the check boxes selected) struts
> doesn't set the ArrayList to empty. It will still contain the old
> selection. What is the best way to solve this issue?
> My Options:
> 1. Should I use Preparable and set this ArrayList to empty? Since this is
> a wizard (multiple pages submitting to the same action) have to make sure
> it is done only when submitting the page that have
> these checkboxes.
> 2. Create two separate ArrayLists, one to get values from Struts and
> another to save the original selection and clear the first array list. Down
> side is I need to populate the list linked to the form
> when user navigates back to that page.
> Neither of them seem elegant. Is there a way to make struts set the
> ArrayList to empty when user doesn't select any check box?
> Using Struts 2.3.35
> Thanks,
> Prasanth

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