如何在groovy Jenkinsfile中从xml文件中读取xml属性

pipeline {
    agent any
    
    stages {
        stage('Read XML') {
            steps {
                script {
                    def xmlFile = readFile 'path/to/xml/file.xml'
                    def xml = new XmlSlurper().parseText(xmlFile)
                    
                    // 读取XML属性
                    def attributeValue = xml.@attributeName
                    
                    echo "The value of attributeName is: ${attributeValue}"
                }
            }
        }
    }
}