Building and testing Java with Gradle

Introduction

This guide shows you how to create a workflow that performs continuous integration (CI) for your Java project using the Gradle 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 cache files and upload artifacts from a workflow run.

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

Prerequisites

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

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

Using a Gradle workflow template

Чтобы быстро приступить к работе, добавьте шаблон рабочего процесса в .github/workflows каталог репозитория.

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

На GitHubперейдите на главную страницу репозитория.
Под именем репозитория щелкните Actions.
Если в вашем репозитории уже используется рабочий процесс, нажмите кнопку Создать рабочий процесс.
The "Choose a workflow" page shows a selection of recommended workflow templates. Search for "Java with Gradle".
On the "Java with Gradle" workflow, click Configure. Этот рабочий процесс выполняет следующие действия:
Извлекает копию репозитория проекта.
Настраивает JDK Java.
Настраивает среду Gradle. Действие gradle/actions/setup-gradle заботится о состоянии кэширования между выполнением рабочего процесса и содержит подробную сводку по всем выполнениям Gradle.
The "Build with Gradle" step executes the build task using the Gradle Wrapper.
Edit the workflow as required. For example, change the Java version.
Примечание.
- Этот шаблон рабочего процесса содержит действие, которое не сертифицировано GitHub. Действия, предоставляемые сторонними сторонами, регулируются отдельными условиями обслуживания, политикой конфиденциальности и документацией по поддержке.
- При использовании действий со стороны сторонних производителей следует использовать версию, указанную с помощью фиксации SHA. Если действие будет изменено и вы хотите использовать более новую версию, необходимо обновить SHA. Вы можете указать версию, ссылаясь на тег или ветвь, однако действие может измениться без предупреждения. Дополнительные сведения см. в разделе Security hardening for GitHub Actions.
Click Commit changes.

The gradle.yml workflow file is added to the .github/workflows directory of your repository.

Указание версии и архитектуры Java

Шаблон рабочего процесса настраивает PATH содержащий OpenJDK 8 для платформы x64. Если вы хотите использовать другую версию Java или выбрать другую архитектуру (x64 или x86), можно использовать действие setup-java для выбора другой среды выполнения Java.

Например, чтобы использовать JDK версии 11, предоставляемой Adoptium для платформы x64, можно выполнить действие setup-java и установить параметры java-version,distribution и architecture на '11', 'temurin' и x64.

YAML

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

Дополнительные сведения см. в описании действия 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 build task by default. In the default Gradle configuration, this command will download dependencies, 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 use a different task, you can specify those. For example, you may want to run the package task that's configured in your ci.gradle file.

YAML

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

  - name: Setup Gradle
    uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # v4.0.0

  - name: Build with Gradle
    run: ./gradlew -b ci.gradle package

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

  - name: Setup Gradle
    uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # v4.0.0

  - name: Build with Gradle
    run: ./gradlew -b ci.gradle package

Caching dependencies

Your build dependencies can be cached to speed up your workflow runs. After a successful run, gradle/actions/setup-gradle caches important parts of the Gradle user home directory. In future jobs, the cache will be restored so that build scripts won't need to be recompiled and dependencies won't need to be downloaded from remote package repositories.

Caching is enabled by default when using the gradle/actions/setup-gradle action. For more information, see gradle/actions/setup-gradle.

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.

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

YAML

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

  - name: Setup Gradle
    uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # v4.0.0

  - name: Build with Gradle
    run: ./gradlew build

  - name: Upload build artifacts
    uses: actions/upload-artifact@v4
    with:
      name: Package
      path: build/libs

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

  - name: Setup Gradle
    uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # v4.0.0

  - name: Build with Gradle
    run: ./gradlew build

  - name: Upload build artifacts
    uses: actions/upload-artifact@v4
    with:
      name: Package
      path: build/libs

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