We’re making it easier and simpler for developers to get started with Lightbend technologies. This unfortunately means that future releases of Play, Akka and Scala will no longer include Activator support, and Lightbend’s Activator server will be decommissioned by the end of 2017. Instead of supporting Activator to create and set up development projects, we'll be supporting standard Giter8 templates for sbt users and Maven archetypes for Maven users. So going forward,
To create new Lightbend projects
Instead of using the Activator command, make sure you have sbt 0.13.13 (or higher), and use the “sbt new” command, providing the name of the template. For example, “$ sbt new akka/hello-akka.g8”. You can find a list of templates here.
Also, as a convenience, the Lightbend Project Starter allows you to quickly create a variety of example projects that you just unzip and run.
Play Framework is the High Velocity Web Framework for Java and Scala. Play is based on a lightweight, stateless, web-friendly architecture. Built on Akka, Play provides predictable and minimal resource comsumption (CPU, memory, threads) for highly-scalable applications. This app will teach you how to start building Play 2.2 apps with Scala.
The bundle includes a small bootstrap script that
can start Activator. To start Lightbend Activator's UI:
In your File Explorer, navigate into the directory that the template was extracted to, right-click on the file named "activator.bat", then select "Open", and if prompted with a warning, click to continue:
Or from a command line:
C:\Users\typesafe\hello-play-scala> activator ui
This will start Lightbend Activator and open this template in your browser.
Option 3: Create a hello-play-scala project from the command line
If you have Lightbend Activator, use its command line mode
to create a new project from this template.
Type activator new PROJECTNAME hello-play-scala on the command line.
We've included the text of this template's tutorial below,
but it may work better if you view it inside Activator
on your computer. Activator tutorials are often designed
to be interactive.
Preview the tutorial
You've just created a simple Play Framework application! Now lets explore the code and make some changes.
View the App
Once the application has been compiled and the server started, your application can be accessed at: http://localhost:9000 Check in Run to see the server status. When you make an HTTP request to that URL, the Play server figures out what code to execute which will handle the request and return a response. In this application the request handler for requests to the root URL (e.g. "/") are handled by a Java Controller. You can use Java and Scala to create your controllers. Controllers asynchronously return HTTP responses of any content type (i.e. HTML, JSON, binary).
The Play Documentation contains much more exhaustive details and also covers a number of other topics which haven't been addressed in this tutorial. StackOverflow is a great place ask questions about Play. The play-framework Google Group is a great place to discuss Play.