ソース

HogeController.java

package controllers;

import javax.inject.Singleton;

import play.mvc.Controller;
import play.mvc.Result;
import play.mvc.With;

@Singleton
public class HogeController extends Controller {

	@With(HogeAction.class)
	public Result index() {
		System.out.println("--------------------------");
		System.out.println("HogeController.index");
		System.out.println("--------------------------");
		return ok();
	}
}

HogeAction.java

package controllers;

import java.util.concurrent.CompletionStage;

import play.mvc.Action;
import play.mvc.Http.Context;
import play.mvc.Result;

public class HogeAction extends Action.Simple {

	@Override
	public CompletionStage<Result> call(Context ctx) {

		System.out.println("before action");

		return delegate.call(ctx)
				.whenComplete((result, t) -> {

					System.out.println("status:" + result.status());
					System.out.println("after action");

				});
	}

}

実行結果

before action
--------------------------
HogeController.index
--------------------------
status:200
after action

参考URL

JavaActionsComposition - 2.5.x
CompletionStage (Java Platform SE 8)