laravel application 容器app
vendor/laravel/framework/src/Illuminate/Foundation/Application.php
Application是laravel的核心容器，幾乎處理所有東西的時候都需要用到，主要功能有：
1. app首先繼承了container，作為一個容器類存在
2。註冊了laravel運行過程的需要的基礎類進容器，並且生成了運行需要的實例。承擔了初始化功能。
這裏需要額外說一下，app裏面說的所謂註冊，不是指綁定，應該是直接直接實例化了，並註入到容器。但是，針對provider，實例化了provider，並運行了，並不會生成實際的類，而是將類綁定。
3. 額外提供了更方便的一些功能，主要是與程序的環境相關的，比如：provider處理運行是在這裏，config app裏面的配置就在本類讀取並處理。
具體功能如下：
1. container的功能就不說了，前面微博已經描述這個了。
2. 註冊程序運行中需要的最基礎的類
在 __construct：構造函數中處理：
if ($basePath) {
$this->setBasePath($basePath);
}
$this->registerBaseBindings();
$this->registerBaseServiceProviders();
$this->registerCoreContainerAliases();
setBasePath 基本路徑添加進容器實例，這也是這絕大多數框架裏面都需要做都事情，防止出現相對絕對等各種路徑使用時候的混亂，總共添加了這麽多：
$this->instance(‘path‘, $this->path());
$this->instance(‘path.base‘, $this->basePath());
$this->instance(‘path.lang‘, $this->langPath());
$this->instance(‘path.config‘, $this->configPath());
$this->instance(‘path.storage‘, $this->storagePath());
$this->instance(‘path.database‘, $this->databasePath());
$this->instance(‘path.resources‘, $this->resourcePath());
$this->instance(‘path.bootstrap‘, $this->bootstrapPath());
registerBaseBindings
註冊基本綁定，添加app本身進容器實例，然後，PackageManifest添加進容器實例，本功能可以處理一些默認的provider和aliases，本功能後續展開描述。
registerBaseServiceProviders
註冊基本的Providers，包括event／log／router 這三部分
event：vendor/laravel/framework/src/Illuminate/Events/EventServiceProvider.php
log：vendor/laravel/framework/src/Illuminate/Log/LogServiceProvider.php
router：vendor/laravel/framework/src/Illuminate/Routing/RoutingServiceProvider.php
router的provider跟別的不一樣，提供了多個相關綁定：router url redirect Psr\Http\Message\ServerRequestInterface Psr\Http\Message\ResponseInterface Illuminate\Contracts\Routing\ResponseFactory Illuminate\Routing\Contracts\ControllerDispatcher
registerCoreContainerAliases 註冊一些核心的別名，包括：
‘app‘ => [\Illuminate\Foundation\Application::class, \Illuminate\Contracts\Container\Container::class, \Illuminate\Contracts\Foundation\Application::class, \Psr\Container\ContainerInterface::class],
‘auth‘ => [\Illuminate\Auth\AuthManager::class, \Illuminate\Contracts\Auth\Factory::class],
‘auth.driver‘ => [\Illuminate\Contracts\Auth\Guard::class],
‘blade.compiler‘ => [\Illuminate\View\Compilers\BladeCompiler::class],
‘cache‘ => [\Illuminate\Cache\CacheManager::class, \Illuminate\Contracts\Cache\Factory::class],
‘cache.store‘ => [\Illuminate\Cache\Repository::class, \Illuminate\Contracts\Cache\Repository::class],
‘config‘ => [\Illuminate\Config\Repository::class, \Illuminate\Contracts\Config\Repository::class],
‘cookie‘ => [\Illuminate\Cookie\CookieJar::class, \Illuminate\Contracts\Cookie\Factory::class, \Illuminate\Contracts\Cookie\QueueingFactory::class],
‘encrypter‘ => [\Illuminate\Encryption\Encrypter::class, \Illuminate\Contracts\Encryption\Encrypter::class],
‘db‘ => [\Illuminate\Database\DatabaseManager::class],
‘db.connection‘ => [\Illuminate\Database\Connection::class, \Illuminate\Database\ConnectionInterface::class],
‘events‘ => [\Illuminate\Events\Dispatcher::class, \Illuminate\Contracts\Events\Dispatcher::class],
‘files‘ => [\Illuminate\Filesystem\Filesystem::class],
‘filesystem‘ => [\Illuminate\Filesystem\FilesystemManager::class, \Illuminate\Contracts\Filesystem\Factory::class],
‘filesystem.disk‘ => [\Illuminate\Contracts\Filesystem\Filesystem::class],
‘filesystem.cloud‘ => [\Illuminate\Contracts\Filesystem\Cloud::class],
‘hash‘ => [\Illuminate\Contracts\Hashing\Hasher::class],
‘translator‘ => [\Illuminate\Translation\Translator::class, \Illuminate\Contracts\Translation\Translator::class],
‘log‘ => [\Illuminate\Log\Writer::class, \Illuminate\Contracts\Logging\Log::class, \Psr\Log\LoggerInterface::class],
‘mailer‘ => [\Illuminate\Mail\Mailer::class, \Illuminate\Contracts\Mail\Mailer::class, \Illuminate\Contracts\Mail\MailQueue::class],
‘auth.password‘ => [\Illuminate\Auth\Passwords\PasswordBrokerManager::class, \Illuminate\Contracts\Auth\PasswordBrokerFactory::class],
‘auth.password.broker‘ => [\Illuminate\Auth\Passwords\PasswordBroker::class, \Illuminate\Contracts\Auth\PasswordBroker::class],
‘queue‘ => [\Illuminate\Queue\QueueManager::class, \Illuminate\Contracts\Queue\Factory::class, \Illuminate\Contracts\Queue\Monitor::class],
‘queue.connection‘ => [\Illuminate\Contracts\Queue\Queue::class],
‘queue.failer‘ => [\Illuminate\Queue\Failed\FailedJobProviderInterface::class],
‘redirect‘ => [\Illuminate\Routing\Redirector::class],
‘redis‘ => [\Illuminate\Redis\RedisManager::class, \Illuminate\Contracts\Redis\Factory::class],
‘request‘ => [\Illuminate\Http\Request::class, \Symfony\Component\HttpFoundation\Request::class],
‘router‘ => [\Illuminate\Routing\Router::class, \Illuminate\Contracts\Routing\Registrar::class, \Illuminate\Contracts\Routing\BindingRegistrar::class],
‘session‘ => [\Illuminate\Session\SessionManager::class],
‘session.store‘ => [\Illuminate\Session\Store::class, \Illuminate\Contracts\Session\Session::class],
‘url‘ => [\Illuminate\Routing\UrlGenerator::class, \Illuminate\Contracts\Routing\UrlGenerator::class],
‘validator‘ => [\Illuminate\Validation\Factory::class, \Illuminate\Contracts\Validation\Factory::class],
‘view‘ => [\Illuminate\View\Factory::class, \Illuminate\Contracts\View\Factory::class],
所以，初始化之後的app裏面的內容如下：
bindings 裏面有如下內容：
events
log
router
url
redirect
Psr\Http\Message\ServerRequestInterface
Psr\Http\Message\ResponseInterface
Illuminate\Contracts\Routing\ResponseFactory
Illuminate\Routing\Contracts\ControllerDispatcher
總結一下，application初始化的時候，就幹了這麽幾個事情：
1. 定位自己，確定文件運行的相關目錄
2. 把自己扔進容器，把用來引用其他代碼的package類實例化進容器。
3. log／event／router 三大基本功能提高provider
4. 綁定別名，當然，許多別名，這這個時候，實際上是無效的。因為根本沒綁定到實際類，估計是為了占空。
在container之外擴展的功能：
1. 啟動時額外提供的初始化功能，並且添加了相關事件的註冊，主要函數bootstrapWith。
添加事件 bootstrapping bootstrapped 並且註冊外面類提供的所有初始化功能。準備程序運行的參數和環境的註入。
2. registerConfiguredProviders 函數，讀取app.providers裏面定義的provider，並註冊。
3. provider的處理，主要函數，register（註冊provider），boot等。
4. 延遲加載deferredServices，延遲加載的provider，只是註冊進container，但是，並不實例化provider，只有調用相關類的時候，才會運行provider進行註冊。
5.handle 直接調用kernel處理request，也是針對網絡訪問的一個出口函數。
app在container之外，添加了provider的概念，添加了request相關處理的概念，將container包裝成了一個處理網絡請求的新container。
instances裏面有如下內容：
path::/Users/yuxuezhong/git/webservice/api/app
path.base::/Users/yuxuezhong/git/webservice/api
path.lang::/Users/yuxuezhong/git/webservice/api/resources/lang
path.config::/Users/yuxuezhong/git/webservice/api/config
path.public::/Users/yuxuezhong/git/webservice/api/public
path.storage::/Users/yuxuezhong/git/webservice/api/storage
path.database::/Users/yuxuezhong/git/webservice/api/database
path.resources::/Users/yuxuezhong/git/webservice/api/resources
path.bootstrap::/Users/yuxuezhong/git/webservice/api/bootstrap
app::Illuminate\Foundation\Application
Illuminate\Container\Container::Illuminate\Foundation\Application
Illuminate\Foundation\PackageManifest::Illuminate\Foundation\PackageManifest
laravel application 容器app