2017-09-25 5:04 GMT+02:00 Burton Rhodes <burtonrho...@gmail.com>:
> When extending the StrutsTypeConverter, is there anyway to figure out if
> the "toClass" is a List<Integer> or a List<String>? I have found that when
> converting data from a submitted webpage that has a value of a List in a
> single variable, the standard struts conversion fails. For example:
> <s:hidden name="integerList" value="%{integerList}" /> display as <s:hidden
> name="integerList" value="[1,2,3,4,5]" />. When the form submits, this
> value will not convert properly back into the List. In addition, the
> conversion fails if you have a list of checkboxes and the user only checks
> one - hence only a single variable being converted to a List.
>
> I have solved this issue by creating a MyListConverter, but I have to
> declare the converter on each action in a [-conversion.properties] file
> which is now becoming a bit cumbersome since this is such a common
> occurrence. I have also declared some on my model/entity beans, but
> still.... I would love to have a more global "List" converter, such as:
>
> [xwork-conversion.properties]
> java.util.List=com.afs.web.converter.MyListConverter
>
> Thus any List that is encountered, I could attempt "my conversion" and send
> up the chain of command if the resulting List is not of List<Integer> or
> List<String>.
>
> [Psuedo_Code]
> public class MyListConverter extends StrutsTypeConverter {
> public Object convertFromString(Map context, String[] values, Class
> toClass) {
> // Is toClass List<Integer>, then try "my" conversion
>
> // Else is toClass List<String?, then try "my" conversion
>
> // Else return performFallbackConversion(context, o, toClass);
> }
> }
>
> Any ideas? Or am I going about this incorrectly?
What version of Struts do you use? I think this was resolved in 2.5.13
or 2.5.12 - I meant conversion of list of built-in types (ints,
doubles, etc), to convert your own type just register it (as for the
List above).
Regards
--
Łukasz
+ 48 606 323 122 http://www.lenart.org.pl/
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