Building and testing Java with Ant

Introduction

This guide shows you how to create a workflow that performs continuous integration (CI) for your Java project using the Ant build system. The workflow you create will allow you to see when commits to a pull request cause build or test failures against your default branch; this approach can help ensure that your code is always healthy. You can extend your CI workflow to upload artifacts from a workflow run.

GitHub-hosted runners have a tools cache with pre-installed software, which includes Java Development Kits (JDKs) and Ant. For a list of software and the pre-installed versions for JDK and Ant, see Using GitHub-hosted runners.

Prerequisites

You should be familiar with YAML and the syntax for GitHub Actions. For more information, see:

• Workflow syntax for GitHub Actions
• Writing workflows

We recommend that you have a basic understanding of Java and the Ant framework. For more information, see the Apache Ant Manual.

Utilisation d’exécuteurs auto-hébergés sur GitHub Enterprise Server

Quand vous utilisez des actions de configuration (comme actions/setup-LANGUAGE) sur GitHub Enterprise Server avec des exécuteurs auto-hébergés, vous pouvez être amené à configurer le cache des outils sur les exécuteurs qui n’ont pas accès à Internet. Pour plus d’informations, consultez « Configuration du cache d’outils sur les exécuteurs auto-hébergés sans accès à Internet ».

Using an Ant workflow template

Pour démarrer rapidement, ajoutez un modèle de workflow au répertoire .github/workflows de votre référentiel.

GitHub provides a workflow template for Ant that should work for most Java with Ant projects. The subsequent sections of this guide give examples of how you can customize this workflow template.

1. Sur GitHub, accédez à la page principale du référentiel.

2. Sous le nom de votre dépôt, cliquez sur Actions.

   

3. Si vous disposez déjà d’un workflow dans votre dépôt, cliquez sur Nouveau workflow.

4. The "Choose a workflow" page shows a selection of recommended workflow templates. Search for "Java with Ant".

5. On the "Java with Ant" workflow, click Configure.

   If you don't find the "Java with Ant" workflow template, copy the following workflow code to a new file called ant.yml in the .github/workflows directory of your repository.

   YAML

   name: Java CI
   
   on:
     push:
       branches: [ $default-branch ]
     pull_request:
       branches: [ $default-branch ]
   
   jobs:
     build:
       runs-on: ubuntu-latest
   
       steps:
       - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v4
         with:
           java-version: '11'
           distribution: 'temurin'
       - name: Build with Ant
         run: ant -noinput -buildfile build.xml
   

6. Edit the workflow as required. For example, change the Java version.

7. Click Commit changes.

Spécification de la version et de l’architecture de Java

Le modèle de workflow configure le PATH pour qu’il contienne OpenJDK 8 pour la plateforme x64. Si vous souhaitez utiliser une autre version de Java ou cibler une architecture différente (x64 ou x86), vous pouvez utiliser l’action setup-java pour choisir un autre environnement d’exécution Java.

Par exemple, pour utiliser la version 11 du JDK fourni par Adoptium pour la plateforme x64, vous pouvez utiliser l’action setup-java et configurer les paramètres java-version, distribution et architecture sur '11', 'temurin' et x64.

steps:
  - uses: actions/checkout@v4
  - name: Set up JDK 11 for x64
    uses: actions/setup-java@v4
    with:
      java-version: '11'
      distribution: 'temurin'
      architecture: x64

steps:
  - uses: actions/checkout@v4
  - name: Set up JDK 11 for x64
    uses: actions/setup-java@v4
    with:
      java-version: '11'
      distribution: 'temurin'
      architecture: x64

Pour plus d’informations, consultez l’action setup-java.

Building and testing your code

You can use the same commands that you use locally to build and test your code.

The workflow template will run the default target specified in your build.xml file. Your default target will commonly be set to build classes, run tests and package classes into their distributable format, for example, a JAR file.

If you use different commands to build your project, or you want to run a different target, you can specify those. For example, you may want to run the jar target that's configured in your build-ci.xml file.

steps:
  - uses: actions/checkout@v4
  - uses: actions/setup-java@v4
    with:
      java-version: '17'
      distribution: 'temurin'
  - name: Run the Ant jar target
    run: ant -noinput -buildfile build-ci.xml jar

steps:
  - uses: actions/checkout@v4
  - uses: actions/setup-java@v4
    with:
      java-version: '17'
      distribution: 'temurin'
  - name: Run the Ant jar target
    run: ant -noinput -buildfile build-ci.xml jar

Packaging workflow data as artifacts

After your build has succeeded and your tests have passed, you may want to upload the resulting Java packages as a build artifact. This will store the built packages as part of the workflow run, and allow you to download them. Artifacts can help you test and debug pull requests in your local environment before they're merged. For more information, see Storing and sharing data from a workflow.

Ant will usually create output files like JARs, EARs, or WARs in the build/jar directory. You can upload the contents of that directory using the upload-artifact action.

steps:
  - uses: actions/checkout@v4
  - uses: actions/setup-java@v4
    with:
      java-version: '17'
      distribution: 'temurin'

  - run: ant -noinput -buildfile build.xml
  - uses: actions/upload-artifact@v3
    with:
      name: Package
      path: build/jar

steps:
  - uses: actions/checkout@v4
  - uses: actions/setup-java@v4
    with:
      java-version: '17'
      distribution: 'temurin'

  - run: ant -noinput -buildfile build.xml
  - uses: actions/upload-artifact@v3
    with:
      name: Package
      path: build/jar