Validate Array in Struts

["Paulo César M. Jeveaux" <je...@gmail.com>]

Hi

  I have html form which containes product name and product no. these
product name and product number can be in 'N' Numbers. For this i have
taken Array of Product Names and Product Number. But i am unable to
validate these arrays . Can You please tell me how we can validate
array.

T+

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* @author Paulo César M. Jeveaux
* Java Consultant
* @version 21.0
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Re: Validate Array in Struts

[Manisha Sathe <ma...@yahoo.com>]

Few days back i also posted the query much similar to yrs, i am attaching the reply i got from Matt  below for yr reference. Hope this helps u 
 
regards
Manisha
 
Manisha Sathe wrote:
> I have a form whose fields are from an dynamic customer array. I 
display Customer name and giving i/p field  for Amount to enter. 
>  
> The JSP might contain 2-3 text fields called amt against different 
customers (I am identifying it with IDs)
>  
> My form bean is something like this,
>  
> public class AddressForm extends ValidatorForm
> //ActionForm
> {
> ...
>   private String[] amt;
>  ...
>  public String[] getAmt()
>  {
>   return this.amt;
>  }
>  public void setAmt(String[] amt)
>  {
>   this.amt = amt;
>  }
>  
> ...
> }
>  
> I am using Validator, 
>  
> validation.xml is something like this
>  
>             <field property="amt"
>                 depends="required">
>                 <arg0 key="amt.displayname"/>
>             </field>
> 
> 
--------------------------------------------------------------------------------
>  
> 1) When validation fails and it comes back to jsp form -BUT  the 
bydefault values of Amount is something like : [Ljava.lang.String;@f2da21
>  
> I understand this is because i have declared it as an array. But how 
to get rid of this. 
>  
> 2)I face a problem when i also want to validate as float. As i/p 
taken is amt[1], amt[2] ... it never gets validated as float where as i 
want to validate individual i/p text field as float.
>  
> How can i achieve it ?
>  


Manisha - I think these messages in the archives are very similar to 
your problem.

http://www.mail-archive.com/user@struts.apache.org/msg18871.html
http://www.mail-archive.com/user@struts.apache.org/msg18895.html
http://www.mail-archive.com/user@struts.apache.org/msg18925.html

As well as this bug report:
http://issues.apache.org/bugzilla/show_bug.cgi?id=32978


Basically you can't validate each element of an array of String[] with 
the validator, because it does not have getters/setters for its value. 
Your choices are to use the validate method in the action form to do 
the 
validation, or to setup a new class with an amount property and 
getters/setters for the amounts, then use an array of that instead of 
String[]


Matt


Paulo C�sar M. Jeveaux <je...@gmail.com> wrote:
Hi

I have html form which containes product name and product no. these
product name and product number can be in 'N' Numbers. For this i have
taken Array of Product Names and Product Number. But i am unable to
validate these arrays . Can You please tell me how we can validate
array.

T+

-- 
/**
* @author Paulo C�sar M. Jeveaux
* Java Consultant
* @version 21.0
* http://www.portaljava.com
* @deprecated
*/

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