下面是一个完整的例子，在你的post步骤中使用正则表达式提取字符串。

pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                echo "something else"
                echo 'my_url="https://google.com"'
                echo "something else"
            }

            post {
                success {
                    script {
                        def consoleLog = Jenkins.getInstance().getItemByFullName(env.JOB_NAME).getBuildByNumber(Integer.parseInt(env.BUILD_NUMBER)).logFile.text
                        // THis would extract "123456" from the console output my_url="1234567"
                        def url = (consoleLog =~ 'my_url="(.*)"')[0][1]
                        echo "URL is: $url"
                    }
                }
            }
        }
    }
}