(new Logger('邮件发送失败'))
 ->pushHandler(new RotatingFileHandler(storage_path('logs/email_send.log')))
 ->info(json_encode([
 'data' => $notifiable,
  'error' => $e->getMessage()
  ],320));

实际效果如下:

方式二:

use Log;
...

public function testLog()
{
    $customer_id = 111;
    $code = 333;
    Log::getMonolog()->popHandler();
    Log::useFiles(storage_path('logs/data_info_market.log'), 'info');
    Log::info('==>id=' . $customer_id . ',code=' . $code);
}