Scope of a Spring-Controller and its instance-variables

Question

Are all controllers in Spring-MVC singletons and are shared among different sessions and requests?

If so, I assume that a class-variable like

public          


        

Answer 1

Yes, controllers in Spring-MVC are singletons. Between multiple requests your class variable get shared and might result into ambiguity. You can use @Scope("request") annotation above your controller to avoid such ambiguity.