In the last section, you saw how to bind data submitted by an HTML form to a form backing bean. In order to do the binding, Spring MVC internally uses a special binding object called
WebDataBinder extracts the data out of the
HttpServletRequest object and converts it to a proper data format, loads it into a form backing bean, and validates it. To customize the behavior of data binding, we can initialize and configure the
WebDataBinder object in our Controller. The
org.springframework.web.bind.annotation.InitBinder) annotation helps us to do that. The
@InitBinder annotation designates a method to initialize
Let's look at a practical use ...