背景:我们将当前项目版本设置为系统环境:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.19.1</version>
<configuration>
<forkMode>always</forkMode>
<environmentVariables>
<project.target>${project.build.outputDirectory}</project.target>
<project.version>${project.version}</project.version>
</environmentVariables>
</configuration>
</plugin>
然后我们使用 System.getenv("project.version");
在测试中获取值,这在所有机器上都可以正常工作……除了一台机器。
有问题的机器是带有 Ubuntu 16.04 LTS 的新 AWS EC2 实例。设置和配置看起来不错。我检查了 OpenJDK 和 OracleJDK,最新版本,我还检查了包含的 java 和 maven 版本:
$ java -version
openjdk version "1.8.0_151"
OpenJDK Runtime Environment (build 1.8.0_151-8u151-b12-0ubuntu0.16.04.2-b12)
OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode)
专家
$ mvn -version
Apache Maven 3.3.9
Maven home: /usr/share/maven
Java version: 1.8.0_151, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-8-openjdk-amd64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "4.4.0-1049-aws", arch: "amd64", family: "unix"
以及可供下载的最新版本:
$ mvn --version
Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T07:58:13Z)
Maven home: /usr/share/maven
Java version: 1.8.0_161, vendor: Oracle Corporation
Java home: /usr/lib/jvm/jdk1.8.0_161/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "4.4.0-1049-aws", arch: "amd64", family: "unix"
问题依然存在。奇怪的是, fork 已启用(必需)并且日志条目显示正在设置变量:
[DEBUG] Setting environment variable [project.version]=[4.0.0-SNAPSHOT]
然后我们通过 fork 执行测试:
[DEBUG] boot(compact) classpath: surefire-booter-2.19.1.jar surefire-api-2.19.1.jar test-classes classes junit-4.10.jar hamcrest-core-1.1.jar …-4.0.0-SNAPSHOT.jar surefire-junit4-2.19.1.jar
fork 命令行:/bin/sh -c cd/mnt/ebsVolume/
然而 System.getenv("project.version");
返回 null
最佳答案
我认为您需要改用 systemPropertyVariables。请参阅文档 here .
<systemPropertyVariables>
<project.target>${project.build.outputDirectory}</project.target>
<project.version>${project.version}</project.version>
</systemPropertyVariables>
关于java - Maven surefire environmentVariables 在一台机器上不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49139636/