jenkins中shell脚本中使用构建参数化Groovy变量的四种方式

jenkins中shell脚本中使用构建参数化Groovy变量的四种方式:
以字符变量为例：

流水线代码：

pipeline {agent {//label "${server}"label "${28}"}stages {stage('Hello') {steps {echo 'Hello World'echo "${28}"echo "${character_argument}"echo "--------------------------"// 这个报错//echo ${character_argument} // 这个可以输出变量echo "${character_argument}"//# 下面这三个不可以，输出的是${character_argument}本身echo "\${character_argument}"echo '${character_argument}'echo '\${character_argument}'echo "--------------------------"}}stage('shell') {steps{script {sh"""pwd# shell 脚本中引用 Groovy变量的四种方式echo ${character_argument}echo "${character_argument}"echo "\${character_argument}"echo '${character_argument}'# 下面这个不可以，输出的是${character_argument}本身echo '\${character_argument}'"""}                }}}
}

直接运行：

Console Output：

Started by user 昌显瑞
[Pipeline] Start of Pipeline
[Pipeline] node
Running on xxx.xxx.xx.xx in /home/jenkins/program/jenkins/workspace/xxxxxx_test
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Hello)
[Pipeline] echo
Hello World
[Pipeline] echo
28
[Pipeline] echo
default_argument
[Pipeline] echo
--------------------------
[Pipeline] echo
default_argument
[Pipeline] echo
${character_argument}
[Pipeline] echo
${character_argument}
[Pipeline] echo
${character_argument}
[Pipeline] echo
--------------------------
[Pipeline] }
[Pipeline] // stage
[Pipeline] stage
[Pipeline] { (shell)
[Pipeline] script
[Pipeline] {
[Pipeline] sh
+ pwd
/home/jenkins/program/jenkins/workspace/middle_nMedia_test
+ echo default_argument
default_argument
+ echo default_argument
default_argument
+ echo default_argument
default_argument
+ echo default_argument
default_argument
+ echo ${character_argument}
${character_argument}
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS