在这种情况下，我找不到一种内置的方法来让input返回其默认值，但是你可以手动完成，如下所示：

def options = [:]

// If there are any TimerTriggerCause then this build was started by a cron timer
if (currentBuild.getBuildCauses('hudson.triggers.TimerTrigger$TimerTriggerCause')) {
    // Options to default to when running automatically on a schedule
    options = [
        FOO: 'foo default could be different for auto-scheduled runs',
        BAR: true,
    ]
} else {
    // Interactive option selection
    options = input message: 'Select options',
        parameters: [
                string(name: 'FOO', defaultValue: 'foo default for interactive selection input', trim: true, description '...'),
                booleanParam(name: 'BAR', defaultValue: true, description: '...'),
        ]
}

echo "Chosen: ${options.toString()}"

if (options.BAR) {
    // do something based on `options.FOO`
}

不幸的是，您必须手动保持2个if块在添加/修改/删除参数方面“同步”，以便options在任何情况下都有一组一致的密钥。