在Jenkins管道的Shell步骤中访问Groovy变量 [英] Access a Groovy variable from within shell step in Jenkins pipeline

问题描述

使用Jenkins 2.x中的管道插件，如何访问是在sh步骤中在阶段或节点级别的某个位置定义的Groovy变量?

Using the Pipeline plugin in Jenkins 2.x, how can I access a Groovy variable that is defined somewhere at stage- or node-level from within a sh step?

简单的例子:

node {
    stage('Test Stage') {
        some_var = 'Hello World' // this is Groovy
        echo some_var // printing via Groovy works
        sh 'echo $some_var' // printing in shell does not work
    }
}

在Jenkins输出页面上给出以下内容:

gives the following on the Jenkins output page:

[Pipeline] {
[Pipeline] stage
[Pipeline] { (Test Stage)
[Pipeline] echo
Hello World
[Pipeline] sh
[test] Running shell script
+ echo

[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS

正如人们所看到的，sh步骤中的echo打印一个空字符串.

As one can see, echo in the sh step prints an empty string.

一种解决方法是通过

env.some_var = 'Hello World'

并通过

sh 'echo ${env.some_var}'

但是，这种滥用环境来完成这项任务.

However, this kind of abuses the environmental scope for this task.

推荐答案

要使用可模板化的字符串(将变量替换为字符串)，请使用双引号.

To use a templatable string, where variables are substituted into a string, use double quotes.

sh "echo $some_var"

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