laravel5.5 自定义defer service provider的写法

迈不过友情╰ 2022-04-17 01:40 245阅读 0赞

### 文章目录 ###

*   *   *  场景
         *  参考文档
         *  解决
         *  举例

### 场景 ###

*  像文档描述的那样，defer service provider 不是没有每个请求都要加载的，所以可以提高应用的响应效率。defer  
    service provider只会在需要的时候才会加载。 那么应该怎么操作

### 参考文档 ###

*  [laravel service providers 官方文档][laravel service providers]

### 解决 ###

*  YourServiceProvider需要设置 $defer 属性 && provides 方法
    
     *  protected $defer = true;
     *  `The provides method should return the service container bindings registered by the provider` 翻译一下就是providers 需要返回service container
 *  验证是否设置成功
    
     *  php artisan clear-compile 清除掉编译的文件
     *  发送一次请求 打开bootstrap/cache/services.php 文件, 就可以再deferred下标中找到自己注册的service provider 了

/** * Get the services provided by the provider. * * @return array */
       public function provides()
        { 
            return [Connection::class];
        }

### 举例 ###

<?php
    
    namespace App\Providers;
    
    use App\Billing\Stripe;
    use Illuminate\Support\ServiceProvider;
    
    class BillServiceProvider extends ServiceProvider
    { 
        /** * Indicates if loading of the provider is deferred. * * @var bool */
        protected $defer = true;
    
        /** * Bootstrap the application services. * * @return void */
        public function boot()
        { 
        }
    
        /** * Register the application services. * * @return void */
        public function register()
        { 
            $this->app->singleton('billing', function($app){ 
               return new Stripe();
            });
        }
    
        /** * Get the services provided by the provider. * * @return array */
        public function provides()
        { 
            return ['billing'];
        }
    }

[laravel service providers]: https://laravel.com/docs/5.5/providers#deferred-providers