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 "Specifications for 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 Ant framework. For more information, see the Apache Ant Manual.
Starting with an Ant workflow template
GitHub provides an Ant workflow template that will work for most Ant-based Java projects. For more information, see the Ant workflow template.
To get started quickly, you can choose the preconfigured Ant template when you create a new workflow. For more information, see the "GitHub Actions quickstart."
You can also add this workflow manually by creating a new file in the .github/workflows
directory of your repository.
name: Java CI
on: [push]
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up JDK 1.8
uses: actions/setup-java@v1
with:
java-version: 1.8
- name: Build with Ant
run: ant -noinput -buildfile build.xml
This workflow performs the following steps:
- The
checkout
step downloads a copy of your repository on the runner. - The
setup-java
step configures the Java 1.8 JDK. - The "Build with Ant" step runs the default target in your
build.xml
in non-interactive mode.
The default workflow templates are excellent starting points when creating your build and test workflow, and you can customize the template to suit your project’s needs.
Ejecución en un sistema operativo diferente
La plantilla inicial de flujo de trabajo configura los jobs para que se ejecuten en Linux, utilizando los ejecutores ubuntu-latest
hospedados en GitHub. Puedes cambiar la clave runs-on
para ejecutar tus jobs en un sistema operativo diferente. Por ejemplo, puedes utilizar los ejecutores de Windows hospedados en GitHub.
runs-on: windows-latest
O puedes utilizar los ejecutores de macOS hospedados en GitHub.
runs-on: macos-latest
También puedes ejecutar jobs en contenedores de Docker, o puedes proporcionar un ejecutor auto-hospedado que se ejecute en tu propia infraestructura. Para obtener más información, consulta "Sintaxis de flujo de trabajo para GitHub Actions".
Especificar la versión y arquitectura de JVM
La plantilla inicial de flujo de trabajo configura el PATH
para que contenga OpenJDK 8 para las plataformas x64. Si quieres utilizar una versión diferente de Java, o enfocarte en una arquitectura diferente (x64
o x86
), puedes utilizar la acción setup-java
para elegir un ambiente de ejecución de Java diferente.
Por ejemplo, para utilizar la versión 9.0.4 del JDK para una plataforma x64, puedes utilizar la acción setup-java
y configurar los parámetros java-version
y architecture
en '9.0.4'
y x64
.
steps:
- uses: actions/checkout@v2
- name: Set up JDK 9.0.4 for x64
uses: actions/setup-java@v1
with:
java-version: '9.0.4'
architecture: x64
Para obtener más información, consulta la acción setup-java
.
Building and testing your code
You can use the same commands that you use locally to build and test your code.
The starter workflow 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@v2
- uses: actions/setup-java@v1
with:
java-version: 1.8
- 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 "Persisting workflow data using artifacts."
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@v2
- uses: actions/setup-java@v1
- run: ant -noinput -buildfile build.xml
- uses: actions/upload-artifact@v2
with:
name: Package
path: build/jar