Using Lagom with Java and Maven

Lagom is Approaching EOL

This project will only receive security patches until July 1, 2024, at that point the project will no longer receive any additional patches.

If you are an existing customer of Lightbend and we have not yet contacted you, please reach out to Support.

We recommend migrating any existing work to:

  • Akka for deeply customized projects with complex infrastructure needs. Akka now contains the vast majority of Lagom features.
  • Kalix for a managed scalable environment with an abstraction above the Akka framework layer to allow you to focus only on business logic.

If you have the prerequisites installed and are familiar with Maven, create a Hello World project using the procedures on this page. Otherwise, see detailed instructions for help to set up the prerequisites and get started. Prerequisites for using Lagom with Maven include:

  • JDK 8
  • Maven 3.6 or higher

We've made it easy to create your first project. The link below invokes the Maven mvn archetype:generate command to create a Lagom Hello World project and compresses it in a zip file.

Download and Extract the project

  1. Download the project .zip file (clicking initiates the download).

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

  3. In a shell, change into the top-level directory of the project, lagom-java-maven. For example, if you extracted the project into a directory named my-project:

    • In a macOS or Linux shell: 
      cd my-project/lagom-java-maven
    • In a Windows shell: 
      cd my-project\lagom-java-maven

  4. Start Maven and the Lagom development environment: 

    mvn lagom:runAll

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

  5. 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 documentation to understand your new project.

You might find the Hello World template useful when starting a new project of your own. If you prefer to customize it more, see the manual instructions for generating a project from the Lagom Maven archetype.