pipeline {
  agent any
  parameters {
    // credentials : defaultValue is Credentials ID
    credentials(name: 'git_credential', description: 'Git credential', defaultValue: 'fcb2d7c3-4b35-4ef2-bdf0-24fc4ff1137c', credentialType: "Username with password", required: true )
  }
  stages {
    stage('Print') {
      steps {
        withCredentials([usernamePassword(
          credentialsId: '${git_credential}',
          usernameVariable: 'DOCKER_USERNAME',
          passwordVariable: 'DOCKER_PASSWORD',
        )]) {
          sh """
            echo id:${DOCKER_USERNAME} pw:${DOCKER_PASSWORD}
          """
        }
      }
    }
  }
}

这对我很有效
我希望这对你有帮助。