[Struts2] dynamic checkbox "list"

[thinair <ch...@edu.hefr.ch>]

hello,

I spend a lot of time to make a checkbox list work and try the following :

1. <s:iteration + <s:checkbox with a map / and with a list, (IT works well
with texfield !, but not with checkbox), all the code is explain there

2. <s:checkboxlist with a map / list, I didn't put the code , do you have a
working solution ?

For me no solution works!

Could you give me a proper working sample.
My code for <s:iteration + <s:checkbox :

the jsp page :
<s:iterator value="affectMap" status="status">
     <s:textfield name="affectMap[%{#status.index}]"
	value="%{value}" label="%{key}" labelposition="left" />
</s:iterator>




To load the page I use the following code  (the loading works !):

//build the list with key and value
affectMap.put(key, value); //key = String, value = true (string) or false
(string)

+getAffectMap/setAffectMap




To save the result after the user click submit :

int i = affectMap.size(); //size is correct !
Collection test = affectMap.values();

String[] object = null;
for (Iterator iterator = test.iterator(); iterator.hasNext();) {
  object = (String[]) iterator.next();     (ERROR HERE)
  String s = object[0];	
  System.out.println(s);

}

In case I use a texfield, it works !
But in case of a checkbox, I have got at saving an error of type : 
java.lang.String cannot be cast to [Ljava.lang.String;

If I change the String[] to String. The error is the opposite :
[Ljava.lang.String; cannot be cast to java.lang.String


Could you help me ?

thanks in advance,



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Re: [Struts2] dynamic checkbox "list"

[norken76 <na...@yahoo.com>]

Hello,

I have hopefully an answer and a question for you.
first the answer :
I got the list of checkboxes working by using the "fieldValvue" attribute of
<s:checkbox ...
you need to have a setter that gets called from the "name" attribute which
takes a String[] argument.
this argument will contain all the checkboxes that are set (checked) after
the submit.

Now the Question :
I am trying to get the textfield list working (in parallel to the check
boxes) but couldn't ??
the function I set to be called is never called after the submit.
I know that the values in the textfiels are sent, and the setter function
for the Checkboxes is called but not the function for the textfields ??? I
assument that this setter should have String[] for argument as well ?

 thank you


 

Christian Wiederseiner wrote:
> 
> hello,
> 
> I spend a lot of time to make a checkbox list work and try the following :
> 
> 1. <s:iteration + <s:checkbox with a map / and with a list, (IT works well
> with texfield !, but not with checkbox), all the code is explain there
> 
> 2. <s:checkboxlist with a map / list, I didn't put the code , do you have
> a working solution ?
> 
> For me no solution works!
> 
> Could you give me a proper working sample.
> My code for <s:iteration + <s:checkbox :
> 
> the jsp page :
> <s:iterator value="affectMap" status="status">
>      <s:textfield name="affectMap[%{#status.index}]"
> 	value="%{value}" label="%{key}" labelposition="left" />
> </s:iterator>
> 
> 
> 
> 
> To load the page I use the following code  (the loading works !):
> 
> //build the list with key and value
> affectMap.put(key, value); //key = String, value = true (string) or false
> (string)
> 
> +getAffectMap/setAffectMap
> 
> 
> 
> 
> To save the result after the user click submit :
> 
> int i = affectMap.size(); //size is correct !
> Collection test = affectMap.values();
> 
> String[] object = null;
> for (Iterator iterator = test.iterator(); iterator.hasNext();) {
>   object = (String[]) iterator.next();     (ERROR HERE)
>   String s = object[0];	
>   System.out.println(s);
> 
> }
> 
> In case I use a texfield, it works !
> But in case of a checkbox, I have got at saving an error of type : 
> java.lang.String cannot be cast to [Ljava.lang.String;
> 
> If I change the String[] to String. The error is the opposite :
> [Ljava.lang.String; cannot be cast to java.lang.String
> 
> 
> Could you help me ?
> 
> thanks in advance,
> 
> 
> 
> 

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