Converter class throwing exception java.lang.IllegalArgumentException

Question

I have p:selectOneMenu in my JSF page and when I run my JSF page I am getting the following exception from Converter class.

java.lang.IllegalArgumentException: o         


        

Answer 1

In your getAsObject method you're doing nothing with your reached value. Here you're going to receive your #{emp.employeeNumber}, so you have to convert it into an Employee (probably you'll have to implement a method which loads an Employee by id using service locator) and return the object itself.

You're also referencing the convertor with an EL (#{employeeConverter}), you have to do it in a direct way. Finally, the List of elements has to be composed by SelectItem, in order to make f:selectItems tag work.

Answer 2

Don't assign the string to the item value, you need to assign the converted object (Employee) itself.

change to itemValue="#{emp}"

See BalusC answer on this question.