{"id":3347,"date":"2016-07-30T15:50:22","date_gmt":"2016-07-30T07:50:22","guid":{"rendered":"http:\/\/blog.turn.tw\/?p=3347"},"modified":"2016-07-30T16:00:18","modified_gmt":"2016-07-30T08:00:18","slug":"%e8%ae%80-source-code-%e7%a0%94%e7%a9%b6-laravel-ioc-container-%e5%af%a6%e4%bd%9c%e7%9a%84%e4%b8%80%e9%bb%9e%e5%bf%83%e5%be%97","status":"publish","type":"post","link":"https:\/\/blog.turn.tw\/?p=3347","title":{"rendered":"\u8b80 source code \u7814\u7a76 Laravel IoC Container \u5be6\u4f5c\u7684\u4e00\u9ede\u5fc3\u5f97"},"content":{"rendered":"

\u524d\u9663\u5b50\u5728SO\u56de\u7b54\u4e86\u4e00\u500b\u554f\u984c<\/p>\n

http:\/\/stackoverflow.com\/questions\/27341595\/contracts-in-laravel-5\/29812568<\/a><\/p>\n

\u9019\u554f\u984c\u4e0d\u96e3\uff0c\u5b98\u65b9\u6587\u4ef6\u5c31\u6709\u5beb\u3002<\/p>\n

\u904e\u5e7e\u5929\uff0c\u4e0b\u9762\u7684comments\u63a5\u8457\u6709\u7db2\u53cb amosmos \u63d0\u554f IoC Container \u5be6\u4f5c\u7d30\u7bc0\u7684\u554f\u984c\u3002<\/p>\n

\u4ed6\u7684\u554f\u984c\u8003\u5012\u6211\u4e86\uff0c\u5b8c\u5168\u7121\u6cd5\u56de\u7b54\u3002<\/p>\n

\u65bc\u662f\u82b1\u4e86\u5e7e\u5929\u8b80\u539f\u59cb\u78bc\uff0c\u6700\u5f8c\u7d42\u65bc\u641e\u61c2\u4e86\u3002<\/p>\n

\u8ddf\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\u9019\u500b\u5fc3\u5f97\uff0c\u4e5f\u9806\u4fbf\u5206\u4eab\u4e0b\u6211\u5728\u904e\u7a0b\u4e2d\uff0c\u8b80\u539f\u59cb\u78bc\u7684\u6574\u5957\u601d\u8def\u3002<\/p>\n

\u6b63\u6587\u958b\u59cb<\/h1>\n

\u7c21\u55ae\u4f86\u8aaa\uff0c\u7db2\u53cb amosmos \u7684\u554f\u984c\u5982\u4e0b\uff1a<\/p>\n

\u5728 Illuminate\/Foundation\/Application.php \u6a94\uff0c\u6703\u5728 function registerCoreContainerAliases \u770b\u5230\u9019\u4e9b\uff1a<\/p>\n

\r\n        $aliases = [\r\n            'app'                  => ['Illuminate\\Foundation\\Application', 'Illuminate\\Contracts\\Container\\Container', 'Illuminate\\Contracts\\Foundation\\Application'],\r\n            'auth'                 => 'Illuminate\\Auth\\AuthManager',\r\n            'auth.driver'          => ['Illuminate\\Auth\\Guard', 'Illuminate\\Contracts\\Auth\\Guard'],\r\n            'auth.password.tokens' => 'Illuminate\\Auth\\Passwords\\TokenRepositoryInterface',\r\n            'blade.compiler'       => 'Illuminate\\View\\Compilers\\BladeCompiler',\r\n            'cache'                => ['Illuminate\\Cache\\CacheManager', 'Illuminate\\Contracts\\Cache\\Factory'],\r\n            'cache.store'          => ['Illuminate\\Cache\\Repository', 'Illuminate\\Contracts\\Cache\\Repository'],\r\n            \/\/ ...\r\n        ];\r\n<\/pre>\n
\u8b93\u6211\u5011\u5148\u7a31\u547c’app’\u3001’auth’\u9019\u4e9b\u5b57\u4e32\u70ba IoC Container \u5167\u7684 \u300ckey\u300d \u597d\u4e86\u3002<\/p>\n
\u4e4d\u770b\u4e4b\u4e0b\uff0c\u5927\u90e8\u4efd\u7684 service \u90fd\u5728\u9019\u6642\u5019\u88ab\u7d81\u5b9a\u5230 IoC Container\u5167\uff0c\u5c0d\u61c9\u5230\u67d0\u500b key\u3002<\/p>\n
\u770b\u8d77\u4f86\u975e\u5e38\u5408\u7406\uff0c\u4e5f\u5f88\u6f02\u4eae\uff0c\u5c0d\u5427\uff1fLaravel\u6703\u7528\u5230\u7684service\u90fd\u5728\u9019\u6642\u5019\u7d71\u4e00\u767b\u8a18\u597d\u3001\u7d81\u9032\u9019IoC Container\u3002<\/p>\n
\u554f\u984c\u4f86\u4e86\uff0c\u5728 config\/app.php \u5167\uff0c\u6709\u9019\u500b\u9663\u5217\uff1a<\/p>\n
\r\n    'providers' => [\r\n\r\n        \/*\r\n         * Laravel Framework Service Providers...\r\n         *\/\r\n        Illuminate\\Foundation\\Providers\\ArtisanServiceProvider::class,\r\n        Illuminate\\Auth\\AuthServiceProvider::class,\r\n        Illuminate\\Broadcasting\\BroadcastServiceProvider::class,\r\n        Illuminate\\Bus\\BusServiceProvider::class,\r\n        Illuminate\\Cache\\CacheServiceProvider::class,\r\n        Illuminate\\Foundation\\Providers\\ConsoleSupportServiceProvider::class,\r\n        \/\/ ...\r\n    ];\r\n<\/pre>\n
\u4f60\u5982\u679c\u719f\u6089 Service Provider (\u4e0b\u6587\u4ee5SP\u4ee3\u7a31) \u7684\u8a71\uff0c\u5c31\u6703\u77e5\u9053\u6bcf\u500b SP \u5167\u5fc5\u5b9a\u6709 function register\uff0c\u8ca0\u8cac\u7d81\u5b9aservice\u5230container\u3002<\/p>\n
\u4ee5CacheServiceProvider\u4f86\u8aaa\uff0c\u6703\u51fa\u73fe\u9019\u5e7e\u884c\uff1a<\/p>\n
\r\n    public function register()\r\n    {\r\n        $this->app->singleton('cache', function ($app) {\r\n            return new CacheManager($app);\r\n        });\r\n\r\n        \/\/...\r\n    }\r\n<\/pre>\n
\u554f\u984c\u4f86\u4e86\uff0c\u5728\u4e0a\u9762\u7684 Application.php\uff0c\u5df2\u7d93\u6709\u9019\u500b\u4e86\uff1a<\/p>\n
\r\n            'cache'                => ['Illuminate\\Cache\\CacheManager', 'Illuminate\\Contracts\\Cache\\Factory'],\r\n<\/pre>\n
\u6240\u4ee5\u9019CacheManager\uff0c\u5230\u5e95\u662f\u4f55\u6642\u88ab\u7d81\u5b9a\u5230 ‘cache’ \u9019\u500bkey\u4e0a\u7684\uff1f<\/p>\n
\u662fApplication\u5728\u5efa\u69cb\u5f0f\u547c\u53ebregisterCoreContainerAliases\u6642\u7d81\u5b9a\u7684\u55ce\uff1f<\/p>\n
\u9084\u662f\u5728\u67d0\u8655\u8b80\u53d6 config\/app.php \u7684providers\u6642\u7d81\u5b9a\u7684\uff1f<\/p>\n
\u9019\u908a\u51fa\u73fe\u4e86\u6211\u5011\u7684\u554f\u984c\u4e00\uff1a<\/p>\n
Q1: \u96e3\u9053\u91cd\u8907\u7d81\u5b9a\u4e86\u5169\u6b21\u55ce\uff1fCacheManager\u88ab\u521d\u59cb\u5316\u4e86\u5169\u6b21\uff1f\u6240\u4ee5\u662f Laravel \u539f\u59cb\u78bc\u7684\u7455\u75b5\uff1f<\/h1>\n
\u8b93\u6211\u5011\u505a\u500b\u5be6\u9a57\u5427\uff0c\u628aApplication.php\u88e1\u9762\u9019\u884ccomment\u6389\uff1a<\/p>\n
\r\n            \/\/'cache'                => ['Illuminate\\Cache\\CacheManager', 'Illuminate\\Contracts\\Cache\\Factory'],\r\n<\/pre>\n
\u63a5\u8457\u5728cmd\u8f38\u5165<\/p>\n
php artisan tinker<\/p>\n
\u5f88\u597d\uff0c\u8dd1\u8d77\u4f86\u4e86\uff0c\u81f3\u5c11laravel\u6c92\u6709\u70b8\u6389\u3002<\/p>\n
\u63a5\u8457\u8a66\u8a66cache\u529f\u80fd\u662f\u5426\u9084\u6d3b\u8457\uff1f<\/p>\n
\r\nCache::store('file')->put('foo', 'this is foo in the cache', 10);\r\n\r\nCache::store('file')->get('foo');\r\n\/\/ => \"this is foo in the cache\"\r\n<\/pre>\n
\u770b\u8d77\u4f86\u6c92\u554f\u984c\uff01\u96e3\u9053\u771f\u7684\u662fLaravel\u7684\u7455\u75b5\uff1f<\/p>\n
\u63a5\u8457\u628a Application.php\u6062\u5fa9\u539f\u72c0\uff0c\u7136\u5f8c\u628aCacheServiceProvider\u7684\u7d81\u5b9a\u7d66comment\u6389\uff1a<\/p>\n
\r\n    public function register()\r\n    {\r\n        \/*\r\n        $this->app->singleton('cache', function ($app) {\r\n            return new CacheManager($app);\r\n        });\r\n       *\/\r\n<\/pre>\n
\u63a5\u8457\u5728cmd\u8f38\u5165<\/p>\n
php artisan tinker<\/p>\n
  [ReflectionException]
\n  Class cache does not exist<\/p>\n
Laravel\u70b8\u6389\u4e86\uff01\u6839\u672c\u4e0d\u80fd\u8dd1\uff01<\/p>\n
\u6240\u4ee5\u4e0d\u7b97\u662f\u91cd\u8907\u7d81\u5169\u6b21\uff1f<\/p>\n
\u90a3\u5c31\u51fa\u73fe\u4e86\u6211\u5011\u7684\u554f\u984c\u4e8c\uff1a<\/p>\n
Q2: \u70ba\u4ec0\u9ebc Application.php \u5167\u7684key\u7d66comment\u6389\uff0c\u529f\u80fd\u9084\u662f\u6b63\u5e38\u904b\u4f5c\uff1f<\/h1>\n
\u53cd\u8986\u7ffb\u95b1\u4e00\u4e0b Application.php\u3001Illuminate\\Container\\Container.php\uff0c\u6703\u767c\u73fe function registerCoreContainerAliases \u4f3c\u4e4e\u5c07\u6574\u4e32\u9663\u5217\u5b58\u5728container\u7684\u6210\u54e1\u8b8a\u6578$aliases\u4e0a\uff1f<\/p>\n
\u63a5\u8457\u5c0b\u627e\u8b80\u53d6config\\app.php\u7684\u5730\u65b9\uff0c\u6703\u627e\u5230 Illuminate\\Foundation\\Bootstrap\\LoadConfiguration.php\u9019\u6a94\u6848\uff0c\u7136\u5f8c\u767c\u73feIlluminate\\Foundation\\Bootstrap\\RegisterProviders.php\u9019\u6a94\u6848\uff0c\u7ffb\u95b1Application.php\u548c Illuminate\\Foundation\\ProviderRepository.php\u4e4b\u5f8c\uff0c\u6703\u767c\u73feconfig\\app.php\u5167\u7684providers\u4f3c\u4e4e\u6703\u5b58\u5728container\u7684\u6210\u54e1\u8b8a\u6578$bindings\u4e0a\uff1f<\/p>\n
\u6709\u4e00\u500b\u5f88\u7c21\u55ae\u7684\u65b9\u6cd5\u53bb\u9a57\u8b49\u9019\u4ef6\u4e8b\u60c5\u3002<\/p>\n
\u5c07 Illuminate\\Container\\Container.php \u7684 $aliases \u8207 $bindings \u6210\u54e1\u8b8a\u6578\u6539\u6210 public\uff0c\u63a5\u8457 php artisan tinker<\/p>\n
\r\n$app = App::make('app');\r\n\r\n$app->aliases;\r\n=> [\r\n     \"Illuminate\\Foundation\\Application\" => \"app\",\r\n     \"Illuminate\\Contracts\\Container\\Container\" => \"app\",\r\n     \"Illuminate\\Contracts\\Foundation\\Application\" => \"app\",\r\n     \"Illuminate\\Auth\\AuthManager\" => \"auth\",\r\n     \"Illuminate\\Auth\\Guard\" => \"auth.driver\",\r\n     \"Illuminate\\Contracts\\Auth\\Guard\" => \"auth.driver\",\r\n     \/\/...\r\n\r\n$app->bindings;\r\n=> [\r\n     \/\/...\r\n     \"command.migrate.refresh\" => [\r\n       \"concrete\" => Closure {#236\r\n         class: \"Illuminate\\Database\\MigrationServiceProvider\",\r\n         this: Illuminate\\Database\\MigrationServiceProvider {#230 \u2026},\r\n         file: \"\/home\/howtomakeaturn\/projects\/modmaj.com\/vendor\/laravel\/framework\/src\/Illuminate\/Database\/MigrationServiceProvider.php\",\r\n         line: \"144 to 146\",\r\n       },\r\n       \"shared\" => true,\r\n     ],\r\n     \"command.migrate.install\" => [\r\n       \"concrete\" => Closure {#237\r\n         class: \"Illuminate\\Database\\MigrationServiceProvider\",\r\n         this: Illuminate\\Database\\MigrationServiceProvider {#230 \u2026},\r\n         parameters: [\r\n           \"$app\" => [],\r\n         ],\r\n         file: \"\/home\/howtomakeaturn\/projects\/modmaj.com\/vendor\/laravel\/framework\/src\/Illuminate\/Database\/MigrationServiceProvider.php\",\r\n         line: \"168 to 170\",\r\n       },\r\n       \"shared\" => true,\r\n     ],\r\n     \/\/ ...\r\n<\/pre>\n
\u6703\u767c\u73fe\u7684\u78ba\u662f\u9019\u6a23\u6c92\u932f\uff01<\/p>\n
\u4e8b\u5230\u5982\u4eca\uff0c\u6211\u5011\u6703\u767c\u73feQ1\u7684\u554f\u984c\u89e3\u6c7a\u4e86\uff1aApplication.php\u662f\u5b58\u5728aliases\u5167\uff0c\u800cconfig\\app.php\u662f\u5b58\u5728bindings\u5167\u3002\u4e26\u6c92\u6709\u91cd\u8907\u7d81\u5b9a\u5169\u6b21\u7684\u554f\u984c\uff01\u800c\u662fcontainer\u5be6\u4f5c\u7d30\u7bc0\u6c92\u641e\u6e05\u695a\u7684\u554f\u984c\uff01<\/p>\n
\u6240\u4ee5\u771f\u6b63\u7684\u554f\u984c\u61c9\u8a72\u662f\u9019\u500b\uff1a<\/p>\n
Q3: IoC Container\u5167\u7684$aliases\u8ddf$bindings\u5206\u5225\u662f\u4ec0\u9ebc\uff1f\u5169\u8005\u5982\u4f55\u4e92\u52d5\uff1f<\/h1>\n
\u8981\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u5fc5\u9808\u53bb\u8b80container\u6700\u6838\u5fc3\u7684function make\u90e8\u4efd\u7a0b\u5f0f\u78bc\u3002<\/p>\n
\r\n\r\n\/**\r\n * Resolve the given type from the container.\r\n *\r\n * @param  string  $abstract\r\n * @param  array   $parameters\r\n * @return mixed\r\n *\/\r\n\r\n\/\/ \u9996\u5148\u6ce8\u610f\u5230\u7684\u662f\uff0c\u4e4b\u524d\u6211\u5011\u7a31\u547c\u2019app\u2019\u3001\u2019auth\u2019\u9019\u4e9b\u5b57\u4e32\u70ba IoC Container \u5167\u7684 \u300ckey\u300d\r\n\/\/ \u5176\u5be6\u6b63\u78ba\u540d\u7a31\u662f\u300cabstract\u300d \r\npublic function make($abstract, array $parameters = [])\r\n{\r\n\r\n    \/\/ \u9019\u500bgetAlias\u7684\u529f\u80fd\u5982\u4e0b\r\n    \/\/ >>> $app->getAlias('app');\r\n    \/\/ => \"app\"\r\n    \/\/ >>> $app->getAlias('Illuminate\\Foundation\\Application');\r\n    \/\/ => \"app\"    \r\n    $abstract = $this->getAlias($abstract);\r\n\r\n    \/\/ If an instance of the type is currently being managed as a singleton we'll\r\n    \/\/ just return an existing instance instead of instantiating new instances\r\n    \/\/ so the developer can keep using the same objects instance every time.\r\n\r\n    \/\/ \u5982\u679c\u662f\u7528singleton\u6216\u662finstance\u65b9\u6cd5\uff0c\u61c9\u8a72\u662f\u6703\u628a\u7269\u4ef6\u5b58\u5728instances\u9663\u5217\r\n    \/\/\u9019\u5730\u65b9\u6703\u6aa2\u67e5abstract\u662f\u5426\u771f\u7684\u8ddf\u7269\u4ef6\u7d81\u5b9a\uff0c\u662f\u7684\u8a71\u5c31\u56de\u50b3\uff0c\u6536\u5de5\r\n    if (isset($this->instances[$abstract])) {\r\n        return $this->instances[$abstract];\r\n    }\r\n\r\n    \/\/ getConcrete\u5167\u6703\u53bb\u67e5 $this->bindings[$abstract]['concrete']\r\n    \/\/ \u5c0b\u627e\u9019abstract\u5c0d\u61c9\u5230\u7684\u662f\u54ea\u500b\u985e\u5225\u3001\u6216\u662fClosure\r\n    $concrete = $this->getConcrete($abstract);\r\n\r\n    \/\/ \u5f8c\u9762\u4e00\u5927\u6bb5\u7701\u7565\r\n}\r\n\r\n<\/pre>\n
\u770b\u5230\u9019\u908a\uff0c\u6211\u5011\u5e7e\u4e4e\u53ef\u4ee5\u78ba\u5b9a$aliases\u8ddf$bindings\u7684\u95dc\u4fc2\u70ba\u4f55\u4e86\uff1a<\/p>\n
\u6211\u5011\u5728\u4f7f\u7528 App::make($abstract) \u6642\uff0c\u8f38\u5165\u7684abstract\uff0c\u5be6\u969b\u4e0a\u4e3b\u8981\u662f\u53bbbindings\u627e\u5c0d\u61c9\u4e26\u53eb\u51fa\u4f86\u3002<\/p>\n
\u800caliases\u53ea\u662f\u7d00\u9304abstract\u7684\u5176\u4ed6\u5225\u540d\u800c\u5df2\uff0c\u8209\u4f8b\u5982\u4e0b\uff1a<\/p>\n
\r\n>>> App::make('cache');\r\n=> Illuminate\\Cache\\CacheManager {#431}\r\n\r\n>>> App::make('Illuminate\\Cache\\CacheManager');\r\n=> Illuminate\\Cache\\CacheManager {#431}\r\n\r\n>>> App::make('Illuminate\\Contracts\\Cache\\Factory');\r\n=> Illuminate\\Cache\\CacheManager {#431}\r\n<\/pre>\n
\u9084\u53ef\u4ee5\u518d\u505a\u9032\u4e00\u6b65\u7684\u6e2c\u8a66\uff0c\u5c07Container\u7684function alias\u6539\u6210public\uff0c\u7136\u5f8c\u505a\u4ee5\u4e0b\u6e2c\u8a66\uff1a<\/p>\n
\r\n$app = App::make('app');\r\n\r\n$app->bind('greet', function(){ return 'Hello World!'; });\r\n\r\n$app->make('greet');\r\n\/\/ => \"Hello World!\"\r\n\r\n$app->make('GreetClass');\r\n\/\/ ReflectionException with message 'Class GreetClass does not exist'\r\n\r\n$app->alias('greet', 'GreetClass');\r\n\r\n$app->make('GreetClass');\r\n\/\/ => \"Hello World!\"\r\n\r\n<\/pre>\n
\u6240\u4ee5\u6b63\u5f0f\u56de\u7b54Q3\u7684\u554f\u984c\uff1a<\/p>\n
Service Provider\u7684function register\u5167\u6703\u53bb\u767b\u8a18\u5230IoC Container\u7684abstract\uff0c\u5be6\u969b\u4e0a\u662f\u5b58\u5728$bindings\u6216$instances\u9663\u5217\u3002<\/p>\n
\u800cApp::make($abstract)\u5be6\u969b\u4e0a\u4e5f\u662f\u5f9e\u9019\u5169\u500b\u9663\u5217\u627e\u6771\u897f\u51fa\u4f86\u7528\u3002<\/p>\n
$aliases\u9663\u5217\u53ea\u662f\u5b58abstract\u7684\u5176\u4ed6\u5225\u540d\uff0c\u8b93 Binding Interfaces To Implementations \u6210\u70ba\u53ef\u80fd\uff0c\u4e5f\u5141\u8a31\u76f4\u63a5\u6253\u985e\u5225\u5168\u540d\u9032\u53bb\u3002<\/p>\n
\u7d50\u8ad6<\/h1>\n
\u8b80Laravel\u539f\u59cb\u78bc\u6709\u5e7e\u500b\u5c0f\u6280\u5de7<\/p>\n
1. \u591a\u7528php artisan tinker\u53bb\u8ddflaravel\u4e92\u52d5<\/p>\n
2. \u628a\u4e00\u4e9bsource code\u7684\u8b8a\u6578\u3001\u51fd\u6578\u6539\u6210public\uff0c\u5728tinker\u786c\u5012\u51fa\u4f86\u89c0\u5bdf<\/p>\n
3. \u6709\u4e9b\u6771\u897f\u5f88\u96e3\u5728\u4e00\u5929\u5167\u641e\u6e05\u695a\uff0c\u7761\u500b\u89ba\u9192\u4f86\u518d\u770b\u901a\u5e38\u5f88\u6709\u5e6b\u52a9<\/p>\n
\uff08\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
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