Question

I want to inject the Servlet Context to the Validator placed in the Entity. But null is returned…

Example:

@Entity
class Test{
@TestValidator()
int something;
}

TestValidator implements ConstraintValidator{
@Context ServletContext ctx
}

The scenario is that the action is from the facelet. Then the managed bean’s action is invoked based on the user’s action. I want to pass the ServletContext of that action to the Validator annotated in the Entity class but null is return.. I thought that Servlet Context is application scoped.

Question: Is there a way to access that Servlet Context in the validator?

Thanks!

Answer 1

I created a class named ContextListener which implements ServletContextListener

and i created a static field and method to access the ServletContext in the validator

 public class ContextListener implements ServletContextListener {
        @Override
        public void contextInitialized(ServletContextEvent sce) { 
            sc = sce.getServletContext();
        }
        @Override
        public void contextDestroyed(ServletContextEvent sce) { 
        }
        private static ServletContext sc;

        public static ServletContext getServletContext(){
            return sc;
        }
    }


    TestValidator implements ConstraintValidator{ 
     ServletContext sc = ContextListener.getServletContext(); 
    } 

But please do share any elegant answer. Thanks