Laravel 之Service Providers

Service providers are the central place of all Laravel application bootstrapping. Your own application, as well as all of Laravel's core services are bootstrapped via service providers.

what do we mean by "bootstrapped"? In general, we mean  registering  things, including registering service container bindings, event listeners, middleware, and even routes. Service providers are the central place to configure your application.

If you open the  config / app . php  file included with Laravel, you will see a  providers  array. These are all of the service provider classes that will be loaded for your application. Of course, many of these are "deferred 延遲的 " providers, meaning they will not be loaded on every request, but only when the services they provide are actually needed.

本文中 you will learn how to write your own service providers and register them with your Laravel application.

Writing Service Providers

All service providers extend the  Illuminate\Support \ ServiceProvider  class. Most service providers contain a  register  and a  boot  method . Within the  register  method, you should  only bind things into the  service container . You should never attempt to register any event listeners, routes, or any other piece of functionality within the  register  method.

The Artisan CLI can generate a new provider via the  make : provider  command:

php artisan make : provider RiakServiceProvider

Registering Providers

registered in the  config / app . php  configuration file.