本教程将为您提供有关如何在laravel 8中创建cron作业的简单示例。
步骤1:安装Laravel 8
在此步骤中,如果您还没有laravel 8应用程序设置,那么我们必须获取最新的laravel 8应用程序。
composer create-project --prefer-dist laravel/laravel blog
步骤2:创建命令
在这一步中,我们需要创建我们的自定义命令。自定义命令将与任务调度scron作业一起执行。
php artisan make:command DemoCron --command=demo:cron
现在对命令文件进行一些更改。
app/Console/Commands/DemoCron.php
<?php namespace App\Console\Commands; use Illuminate\Console\Command; class DemoCron extends Command { /** * The name and signature of the console command. * * @var string */ protected $signature = 'demo:cron'; /** * The console command description. * * @var string */ protected $description = 'Command description'; /** * Create a new command instance. * * @return void */ public function __construct() { parent::__construct(); } /** * Execute the console command. * * @return mixed */ public function handle() { \Log::info("Cron is working fine!"); /* Write your database logic we bellow: Item::create(['name'=>'hello new']); */ } }
步骤3:注册为任务调度程序
在此步骤中,需要在Kernel.php文件上定义我们执行时间的命令:
->everyMinute(); | Run the task every minute |
->everyFiveMinutes(); | Run the task every five minutes |
->everyTenMinutes(); | Run the task every ten minutes |
->everyFifteenMinutes(); | Run the task every fifteen minutes |
->everyThirtyMinutes(); | Run the task every thirty minutes |
->hourly(); | Run the task every hour |
->hourlyAt(17); | Run the task every hour at 17 mins past the hour |
->daily(); | Run the task every day at midnight |
->dailyAt(’13:00′); | Run the task every day at 13:00 |
->twiceDaily(1, 13); | Run the task daily at 1:00 & 13:00 |
->weekly(); | Run the task every week |
->weeklyOn(1, ‘8:00’); | Run the task every week on Tuesday at 8:00 |
->monthly(); | Run the task every month |
->monthlyOn(4, ’15:00′); | Run the task every month on the 4th at 15:00 |
->quarterly(); | Run the task every quarter |
->yearly(); | Run the task every year |
->timezone(‘America/New_York’); | Set the timezone |
app/Console/Kernel.php
<?php namespace App\Console; use Illuminate\Console\Scheduling\Schedule; use Illuminate\Foundation\Console\Kernel as ConsoleKernel; class Kernel extends ConsoleKernel { /** * The Artisan commands provided by your application. * * @var array */ protected $commands = [ Commands\DemoCron::class, ]; /** * Define the application's command schedule. * * @param \Illuminate\Console\Scheduling\Schedule $schedule * @return void */ protected function schedule(Schedule $schedule) { $schedule->command('demo:cron') ->everyMinute(); } /** * Register the commands for the application. * * @return void */ protected function commands() { $this->load(__DIR__.'/Commands'); require base_path('routes/console.php'); } }
步骤4:运行scheduler命令以进行测试
现在我们已准备好运行我们的Cron,因此您可以使用以下命令手动检查您的Cron命令。
php artisan schedule:run
运行以上命令后,您可以检查我们已打印一些文本的日志文件。
storage/logs/laravel.php
[2019-04-24 03:46:42] local.INFO: Cron is working fine! [2019-04-24 03:46:52] local.INFO: Cron is working fine! [2019-04-24 03:46:55] local.INFO: Cron is working fine!
最后,您可以在调度任务上管理此命令,您必须向服务器的Crontab文件添加一个记录:
* * * * * php /path/to/artisan schedule:run 1>> /dev/null 2>&1 OR * * * * * cd /path-to-your-project && php artisan schedule:run >> /dev/null 2>&1
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