public interface ViewResolver
View state doesn't change during the running of the application, so implementations are free to cache views.
Implementations are encouraged to support internationalization, i.e. localized view resolution.
Note: To allow for ViewResolver chaining, a ViewResolver should
null if a view with the given name is not defined in it.
However, this is not required: Some ViewResolvers will always attempt
to build View objects with the given name, unable to return
(rather throwing an exception when View creation failed).
viewName- name of the view to resolve
locale- Locale in which to resolve the view. ViewResolvers that support internationalization should respect this.
nullif not found (optional, to allow for ViewResolver chaining)
Exception- if the view cannot be resolved (typically in case of problems creating an actual View object)