Spring MVC 3 binding error List<Integer>

[silwoods]

hi friends, I got an error on binding attribute defined like this:
List<Integer> values;
if changed it to List<String> ,or any other class I defined by myown,like List<classB>, it works fine.

what's the reason? is that because of Integer has no constrator with no parameter: Integer()?

thanks alot,

My dto class like this:

class Adto {
String id;
List<classB> vb;
}

class classB {
String id;
List<Integer> values;
}

i use freemarker,
<@spring.formInput "aForm.vb[0].values[0]"/>

i got error like this:

org.springframework.beans.NullValueInNestedPathExc eption: Invalid property 'vb[0].values' of bean class [com.woods.seller.dto.Adto]: Could not instantiate property type [java.lang.Integer] to auto-grow nested property path: java.lang.InstantiationException: java.lang.Integer
at org.springframework.beans.BeanWrapperImpl.newValue (BeanWrapperImpl.java:655)
at org.springframework.beans.BeanWrapperImpl.growColl ectionIfNecessary(BeanWrapperImpl.java:887)

if i changed values to List<String>, it works ok

[valentin-nasta]

Hi,

I have the same problem. Don't know why it doesn't work with Integer, until then I'll switch to String.