Jenkinsfile中变量的插值

pipeline {
    agent any
    environment {
        NAME = 'John'
        AGE = '30'
    }
    stages {
        stage('Example') {
            steps {
                echo "My name is ${env.NAME} and I am ${env.AGE} years old."
            }
        }
    }
}

pipeline {
    agent any
    parameters {
        string(name: 'NAME', defaultValue: 'John', description: 'Enter your name')
        string(name: 'AGE', defaultValue: '30', description: 'Enter your age')
    }
    stages {
        stage('Example') {
            steps {
                echo "My name is ${params.NAME} and I am ${params.AGE} years old."
            }
        }
    }
}

pipeline {
    agent any
    environment {
        GREETING = 'Hello'
    }
    stages {
        stage('Example') {
            steps {
                def name = 'John'
                echo "${env.GREETING}, ${name}!"
            }
        }
    }
}