JSF java.lang.IllegalArgumentException: Cannot convert 5 of type class java.lang.Integer to class

Question

i get new Error with converter

javax.faces.component.UpdateModelException: java.lang.IllegalArgumentException: Cannot convert 5 of type class java.lang.Inte         


        

Answer 1

I have no idea how your JSF code look like, but I suspect that you're using

<h:selectOneMenu value="#{bean.group}">

instead of

<h:selectOneMenu value="#{bean.groupId}">

Your SelectItem[] contains Integer groupId as item values. The value attribute of the h:selectOneMenu must then match this type. The exception message is telling exactly that. The value is submitted as an Integer, but the bean is expecting a Group.