I can't see how that can solve my problem?
The ArrayList is actually gone. When I want to display the arraylist with
<c:forEach items="${ModifyCivilServantForm.map}" var="formField">
<li>${formField.key}: ${formField.value}</li>
</c:forEach>
Everything is gone.
The problem is, that list contains a few values, which need to be maintained
after submitting.
This is the situation:
I have a Date-object and an arraylist containing a few objects.
What we do now is the following: before the form is displayed, we have an
action which fills the formfields with the corresponding values. Say that you
have a record you want to change, before the change-form is displayed, an
action retrieves the album and fills the form with the right values.
Up till now, we didn't have any problems, because we only used java.lang.String
or java.lang.Integer as types. Now I have a Date-field and an ArrayList-field.
Prefilling those fields is not a problem. The right values are displayed and
everything is ok. When I submit the form, those two fields are gone. First I
got that ERROR org.apache.struts.util.RequestUtils -
javax.servlet.ServletException: BeanUtils.populate
javax.servlet.ServletException: BeanUtils.populate error, but removing those
input fields (whom are hidden) from the form solved the problem. But when I
submit, those values are gone.
Does anybody know how to fix this?
I tried writing that customconverter, but I don't know how or where to register
it. Simply adding that code to an Action-class doesn't solve it
-----Original Message-----
From: Niall Pemberton [mailto:[EMAIL PROTECTED]
Sent: maandag 12 maart 2007 16:46
To: Struts Users Mailing List
Subject: Re: DynaValidatorForm with java.util.Date
On 3/12/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> Where do I register such a convertor? Simply add this code to my Action or
> do I have to add this somewhere else?
>
> I've figured out what my problem was, but now sth else pops up. I have a
> field with type java.util.ArrayList. When I enter the form, the precedent
> Action fills the form. On screen, the ArrayList is correctly processed.
> Now, when I submit the form, all those values are gone.
>
> I added <html:hidden property="txtFieldForArrayList" /> to my JSP, but it
> turns out that was the problem for the previous error. When I remove that
> field from my JSP, everything works correctly for the first time, but the
> second time I enter the page, this ArrayList is gone.
>
> What am I doing wrong here?
Is the ArrayList gone or empty? Presumably just empty - since
DynaActionForm's should re-create the list even in request scope. You
could change the form to be session scope - or you need to add some
"lazy list" type behaviour
http://wiki.apache.org/struts/StrutsCatalogLazyList
http://wiki.apache.org/struts/LazyList
If you use one of the "lazy" ActionForm flavours it does this for you:
http://struts.apache.org/1.x/userGuide/building_controller.html#lazy_action_form_classes
Niall
> -----Original Message-----
> From: Niall Pemberton [mailto:[EMAIL PROTECTED]
> Sent: maandag 12 maart 2007 14:49
> To: Struts Users Mailing List
> Subject: Re: DynaValidatorForm with java.util.Date
>
> On 3/12/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> > Why does sql.Date work?
>
> Because BeanUtils (at the moment) comes with a registered converter
> for jav.sql.Date - but not for java.util.Date. If you want it to
> handle String-->java.util.Date you need to register a Converter for
> it:
>
> Converter dateConverter = new MyDateConverter();
> ConvertUtils.register(dateConverter, java.util.Date.class);
>
> Your date converter will need to implement the following interface:
>
> http://tinyurl.com/2h459j
>
> The section 4.3.1 you refer to below tells you which types are
> supported "out of the box".
>
> Niall
>
> > And the apache-site states that it's actually possible to use for instance
> > java.util.ArrayList. How do you do that?
> > http://struts.apache.org/1.3.5/userGuide/building_controller.html, see
> > section 4.3.1.
>
> > -----Original Message-----
> > From: Hubert Rabago [mailto:[EMAIL PROTECTED]
> > Sent: maandag 12 maart 2007 14:06
> > To: Struts Users Mailing List
> > Subject: Re: DynaValidatorForm with java.util.Date
> >
> > The fields of action forms, including DynaValidatorForms are populated
> > from request parameters, and these values are all in String variables.
> > I suggest using a String variable for the dyna validator form field
> > as well, and just parsing it to get the java.util.Date equivalent when
> > you use it in your Action classes.
> >
> > Hubert
> >
> > On 3/12/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> > > And the 3rd mail. Is it possible to use an object that's different from
> > > java.lang.* as type for the dynavalidatorform? I think that's what
> > > causing the issue here. If it's not possible, then I'm in deep .... :)
> > >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > > Sent: maandag 12 maart 2007 10:26
> > > To: user@struts.apache.org
> > > Subject: RE: DynaValidatorForm with java.util.Date
> > >
> > > Ok, I did some tests and debugging and this is the result:
> > >
> > > The errormsg is "Cannot assign value of type 'java.lang.String' to
> > > property 'txtFieldName' of type 'java.util.Date'".
> > >
> > > I fill that field with following code: modifyForm.set("txtFieldName",new
> > > Date());
> > >
> > > So the object I'm assigning to that field is a Date-object, but for some
> > > reason it is converted to a String.
> > >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> > > Sent: maandag 12 maart 2007 9:40
> > > To: user@struts.apache.org
> > > Subject: DynaValidatorForm with java.util.Date
> > >
> > > Hi
> > >
> > > I have a form in which a Date is displayed, using fmt. It's static text,
> > > so no user input is required. The problem is the following. When the
> > > validation of that form fails, you return to that form. Actually, it
> > > should return to that form, but you're redirected to the error page.
> > >
> > > This is the error:
> > > 2448020 12 03 09:29 [http-8080-Processor24] ERROR
> > > org.apache.struts.util.RequestUtils - javax.servlet.ServletException:
> > > BeanUtils.populate
> > >
> > > javax.servlet.ServletException: BeanUtils.populate
> > >
> > > The form bean exists of a field, which is hidden, of the type
> > > java.util.Date. This is filled by the action, with the correct date.
> > > When I look at the source of the page, the date is actually filled in, so
> > > that's not the problem.
> > >
> > > I assume there's a problem with assigning the java.util.Date-type to a
> > > field in a DynaValidatorForm, but I'm not sure that's what causing the
> > > problem. There's also no validation on that field.
> > >
> > > Struts-config:
> > > <form-bean name="ModifyUserForm"
> > > type="org.apache.struts.validator.DynaValidatorForm">
> > > <form-property name="txtTokenStatus" type="java.util.Date" />
> > > </form-bean>
> > >
> > > Does anybody know how to have a Date-field in your form, in a way you can
> > > assign it to a textfield and make sure you can also pass it to
> > > fmt:formatDate.
> > >
> > > Tia
> > >
> > > Grtz
> > >
> > > Bjorn
> > >
> > >
> >
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