Using Lagom with Scala

Before starting, make sure you have JDK 8 installed and configured. See the Lagom documentation if you are not sure whether you have the right version of Java or to find the link for installing it.

The Lightbend Tech Hub Project Starter makes it simple to create your first project. It uses a Lagom Giter8 template to generate a compressed file that contains:

  • A distribution of sbt, the Scala build tool.

  • A Lagom Hello World project.

Download the project from Tech Hub

Follow these steps to download a project created from the template:

  1. Open the Tech Hub Project Starter.

  2. Click CREATE A PROJECT FOR ME.

    The browser downloads a compressed project.

Extract and run the project

Once you've downloaded a compressed file from Tech Hub, follow these steps:

  1. Extract the compressed file to a directory of your choice.

    Note: On macOS, if you unzip using Archiver, you also have to make the sbt files executable:

    chmod u+x ./sbt 
    chmod u+x ./sbt-dist/bin/sbt

  2. In a shell, change into the top-level directory of the project, lagom-scala-sbt. For example, if you extracted the project into a directory named my-project:

    • In an OSX or Linux shell:

      cd my-project/lagom-scala-sbt

    • In a Windows shell:

      cd my-project\lagom-scala-sbt

  3. Start sbt and the Lagom development environment:

    ./sbt runAll

    It will take a bit of time for the project to build and run. When finished, the console displays the message Services started, ....

  4. Verify that the services are indeed up and running by invoking the hello service endpoint from any HTTP client, such as a browser: http://localhost:9000/api/hello/World

    The request returns the message Hello, World!.

Congratulations! You've created and run your first Lagom system. See the Lagom documentation to learn more about your new project.