英文:
Github action: setup-java with multiple JDKs and corresponding environment variables
问题
背景：
我有一个使用反应式驱动程序用于Cassandra的Spring Boot 2.3项目，构建于Java 11之上。然而，对于集成测试，当我启动嵌入式Cassandra数据库时，我依赖于机器上存在Java 8，并伴随有环境变量JAVA8_HOME。
问题：
我如何配置GitHub操作 setup-java 来为我的构建使用多个JDK，并使JAVA_HOME指向Java 11，但JAVA8_HOME指向Java 8？
英文:
Background:
I've a spring-boot 2.3 project using reactive driver for cassandra that is built on Java 11. For integration test though, when I spin up an embedded Cassandra database, I rely on presence of Java 8 on the machine with accompanying environment variable JAVA8_HOME.
Question:
How can I configure GitHub action setup-java to utilise multiple JDKs for my build and let JAVA_HOME point to Java 11 but JAVA8_HOME point to Java8?
答案1
得分: 5
在GitHub Actions中，使用多个JDK是可以实现的。一个很好且整洁的方式是利用strategy.matrix作业配置，就像在你的.github/workflows/maven.yml中所示：
name: github
on: [push]
jobs:
build:
runs-on: ubuntu-latest
strategy:
matrix:
java-version: [ 8, 11, 15 ]
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v1
with:
java-version: ${{ matrix.java-version }}
- run: mvn -B install --no-transfer-progress --file pom.xml
我没有检查这是否包括你需要的JAVA_HOME环境变量配置，但它明确地将构建环境隔离为不同的Java版本。这里有一个使用此设置的完整示例项目：https://github.com/codecentric/cxf-spring-boot-starter，以及一个绿色构建日志：https://github.com/codecentric/cxf-spring-boot-starter/actions/runs/468949251。
此外，GitHub Actions的矩阵构建GUI界面非常不错：
英文:
Using multiple JDKs with GitHub actions is already possible today. One great and neat way is to leverage the strategy.matrix job configuration like that in your .github/workflows/maven.yml:
name: github
on: [push]
jobs:
build:
runs-on: ubuntu-latest
strategy:
matrix:
java-version: [ 8, 11, 15 ]
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v1
with:
java-version: ${{ matrix.java-version }}
- run: mvn -B install --no-transfer-progress --file pom.xml
I didn't check if this does include the environment variable configuration for JAVA_HOME you need - but it clearly isolates the build environments for the separate Java versions. Here's a full example project using this setup: https://github.com/codecentric/cxf-spring-boot-starter and here's a green build log.
Also the GitHub actions GUI for matrix builds is quite nice:
答案2
得分: 2
不完全是 setup-java，但你可以尝试另一个 java-install 操作：https://github.com/AdoptOpenJDK/install-jdk#multiple-jdks。使用 target 属性设置环境变量 JAVA_HOME。
英文:
Not exactly setup-java, but you can try another java-install action: https://github.com/AdoptOpenJDK/install-jdk#multiple-jdks. Use target property for setting up env var to use as JAVA_HOME.
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