Service Template

In this article, you’ll learn how to create a Liferay service as a Liferay module. To create a Liferay service via the command line using Blade CLI or Maven, use one of the commands with the following parameters:

blade create -t service [-p packageName] [-c className] [-s serviceName] projectName

or

mvn archetype:generate \
    -DarchetypeGroupId=com.liferay \
    -DarchetypeArtifactId=com.liferay.project.templates.service \
    -DartifactId=[projectName] \
    -Dpackage=[packageName] \
    -DclassName=[className]
    -DserviceName=[serviceName] \
    -DliferayVersion=7.2

You can also insert the -b maven parameter in the Blade command to generate a Maven project using Blade CLI.

The template for this kind of project is service. Suppose you want to create a service project called my-service-project with a package name of com.liferay.docs.service and a class name of Service. Also, you’d like to create a service of type com.liferay.portal.kernel.events.LifecycleAction that also implements that same service. You could run the following command to accomplish this:

blade create -t service -p com.liferay.docs.service -c Service -s com.liferay.portal.kernel.events.LifecycleAction my-service-project

or

mvn archetype:generate \
    -DarchetypeGroupId=com.liferay \
    -DarchetypeArtifactId=com.liferay.project.templates.service \
    -DgroupId=com.liferay \
    -DartifactId=my-service-project \
    -Dpackage=com.liferay.docs \
    -Dversion=1.0 \
    -DclassName=Service \
    -DclassName=com.liferay.portal.kernel.events.LifecycleAction \
    -Dauthor=Joe Bloggs \
    -DliferayVersion=7.2

After running the Blade command above, your project’s directory structure would look like this

• my-service-project
  • gradle
    • wrapper
      • gradle-wrapper.jar
      • gradle-wrapper.properties
  • src
    • main
      • java
        • com/liferay/docs/service
          • Service.java
      • resources
  • bnd.bnd
  • build.gradle
  • gradlew

The Maven-generated project includes a pom.xml file and does not include the Gradle-specific files, but otherwise, appears exactly the same.

The generated module is functional and is deployable to a Liferay DXP instance. To build upon the generated app, modify the project by adding logic and additional files to the folders outlined above.