{"id":1733,"date":"2021-12-20T13:18:33","date_gmt":"2021-12-20T05:18:33","guid":{"rendered":"https:\/\/ykyi.net\/?p=1733"},"modified":"2021-12-20T13:18:33","modified_gmt":"2021-12-20T05:18:33","slug":"adonisjs5%e7%9a%84ioc%e6%9c%ba%e5%88%b6%e5%88%9d%e6%8e%a2","status":"publish","type":"post","link":"https:\/\/ykyi.net\/?p=1733","title":{"rendered":"adonisjs5\u7684Ioc\u673a\u5236\u521d\u63a2"},"content":{"rendered":"

\u4ec0\u4e48\u662fIoc<\/h2>\n

Ioc(Inversion of Control)\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f.\u5b83\u6307\u7684\u662f\u4f7f\u7528\u67d0\u5bf9\u8c61\/\u8d44\u6e90\u7684\u4ee3\u7801,\u4e0d\u8d1f\u8d23\u8be5\u5bf9\u8c61\u7684\u4f9d\u8d56\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u7ef4\u62a4,\u800c\u4ea4\u7ed9\u4e00\u4e2a\u4e13\u95e8\u7684\u5bb9\u5668\u6765\u8d1f\u8d23.\u8fd9\u6837,\u600e\u4e48\u521b\u5efa\u5bf9\u8c61\u7684\u63a7\u5236\u6743\u5c31\u8f6c\u79fb\u5230\u4e86\u8fd9\u4e2a\u4e13\u95e8\u7684\u5bb9\u5668,\u5373\u5b9e\u73b0\u4e86\u6240\u8c13\u7684\u63a7\u5236\u53cd\u8f6c.Ioc\u7528\u6765\u964d\u4f4e\u5bf9\u8c61\u4e4b\u95f4\u7531\u4f9d\u8d56\u5173\u7cfb\u4ea7\u751f\u7684\u8026\u5408.\uff08\u6309\u7167\u8f6f\u4ef6\u5de5\u7a0b\u7406\u8bba,\u4f9d\u8d56\u7b97\u662f\u6700\u5f31\u7684\u4e00\u79cd\u8026\u5408\u4e86.\u4f9d\u8d56 < \u5173\u8054 < \u805a\u5408 < \u7ec4\u5408< \u7ee7\u627f\uff09\u6211\u611f\u89c9,Ioc\u7b97\u662f\u4e00\u4e2a\u5347\u7ea7\u7248\u7684\u5de5\u5382\u6a21\u5f0f,\u5b83\u7ba1\u7406\u4e86\u5927\u91cf\u7684\u5de5\u5382\u51fd\u6570\u548c\u5bf9\u5e94\u7684\u8d44\u6e90\u540d\u79f0.\u53ef\u4ee5\u628a\u521b\u5efa\u8d44\u6e90\/\u5bf9\u8c61\u7684\u4f9d\u8d56\u5199\u5728Ioc\u91cc\u9762.<\/p>\n

adonisjs5\u4e2d\u7684Ioc<\/h2>\n

\u6211\u611f\u89c9\u6709\u70b9\u5947\u602a,adonisjs5\u7684\u5b98\u65b9\u6587\u6863\u4e2d\u6ca1\u6709\u4e13\u95e8\u63d0\u53caIoc. https:\/\/docs.adonisjs.com\/guides\/introduction<\/a> \u4f46\u5728adonisjs4.x https:\/\/legacy.adonisjs.com\/docs\/4.1\/ioc-container<\/a> \u7684\u5b98\u65b9\u6587\u6863\u4e2d\u5374\u6709\u5355\u72ec\u7684\u4e00\u8282\u6765\u8bb2Ioc.\u4ee5\u81f3\u4e8e,\u6211\u7b2c\u4e00\u6b21\u8bfb\u5b8cadonis5\u7684\u6587\u6863\u540e,\u5bf9Ioc\u7adf\u7136\u6ca1\u4ec0\u4e48\u5370\u8c61.\u800cIoc\u5374\u662fadonis\u6700\u4e3a\u91cd\u8981\u7684\u6982\u5ff5.anyway~,\u770b\u770badonis\u7684\u6e90\u4ee3\u7801\u600e\u4e48\u5904\u7406Ioc\u5427.<\/p>\n

\u6ce8\u518cIoc<\/h3>\n

\u5728adonisjs\u7684\u4ee3\u7801\u4e2d\u641c\u7d22\u4e00\u4e0b,<\/p>\n

find node_modules\/@adonisjs -iname \"*ioc*\"\n<\/code><\/pre>\n
\u5f88\u5bb9\u6613\u53d1\u73b0adonisjs\u5b9e\u73b0Ioc\u7684\u4ee3\u7801\u5728node_modules\/@adonisjs\/fold\/build\/src\/Ioc\/\u8fd9\u4e2a\u76ee\u5f55\u4e2d.\u76ee\u5f55\u540d\u5c31\u662fIoc,\u6beb\u4e0d\u63a9\u9970\u81ea\u5df1\u7684\u76ee\u7684.
\n\u901b\u4e00\u901bIoc\u8fd9\u4e2a\u76ee\u5f55\u4e0b\u7684js\u6587\u4ef6,\u53d1\u73b0\u6700\u91cd\u8981\u7684\u662findex.js \u548c binBindings.js\u8fd9\u4e24\u4e2a\u6587\u4ef6.\u5176\u4e2dindex.js\u4e2d\u6709\u4e00\u4e2a\u7c7b\u5c31\u53ebIoc, \u800c\u6ce8\u518c\u5230Ioc\u4e2d\u7684\u8d44\u6e90\u88ab\u653e\u5728Bindings.js\u6587\u4ef6\u4e2dBindings\u7c7b\u4e2d.<\/p>\n
    \/**\n     * Define a binding\n     *\/\n    register(binding, callback, singleton) {\n        this.list.set(binding, { callback, singleton });\n        return this;\n    }\n<\/code><\/pre>\n
Binding\u7c7b\u4e2d\u7684register\u51fd\u6570\u975e\u5e38\u663e\u773c.\u663e\u7136\u6ce8\u518c\u4e00\u4e2a\u8d44\u6e90\u5230Ioc\u7684\u4ee3\u7801\u4f1a\u8d70\u5230\u8fd9\u91cc.\u5728\u8fd9\u91cc\u4e0b\u65ad\u70b9,\u8c03\u8d77\u8c03\u8bd5\u5668.\u53d1\u73b0register\u51fd\u6570\u7684\u4e09\u4e2a\u53c2\u6570\u7684\u542b\u4e49\u662f\uff1a binding\u5373\u8d44\u6e90\u7684\u7684namespace,\u901a\u8fc7\u8c03\u8bd5\u5668\u53d1\u73b0\u6ce8\u518c\u7684\u7b2c\u4e00\u4e2a\u8d44\u6e90\u7684namespace\u662f\u201cAdonis\/Core\/Application\u201d\uff1bcallback\u76f8\u5f53\u4e8e\u521b\u5efa\u8fd9\u79cd\u8d44\u6e90\u7684\u5de5\u5382\u51fd\u6570,\u8c03\u7528\u5b83\u5373\u751f\u4ea7\u51fa\u4e00\u4e2a\u5bf9\u5e94\u7684\u5bf9\u8c61\uff1b\u800csingleton\u5219\u662f\u4e00\u4e2aboolean\u503c,\u6307\u793a\u8be5\u79cd\u8d44\u6e90\u662f\u4e0d\u662f\u4e00\u4e2a\u5355\u4ef6.\u770b\u770b\u6808\u7684\u4e0a\u4e00\u4e2aframe,\u662fIoc\u7c7b\u7684singleton()\u51fd\u6570.\u770b\u6765,\u201cAdonis\/Core\/Application\u201d\u8fd9\u4e2a\u8d44\u6e90\u662f\u901a\u8fc7Ioc.singleton()\u521b\u5efa\u7684.<\/p>\n
    \/**\n     * Same as the [[bind]] method, but registers a singleton only. Singleton's callback\n     * is invoked only for the first time and then the cached value is used\n     *\/\n    singleton(binding, callback) {\n        helpers_2.ensureIsFunction(callback, '\"ioc.singleton\" expect 2nd argument to be a function');\n        this.bindings.register(binding, callback, true);\n        return this;\n    }\n<\/code><\/pre>\n
Ioc.singleton()\u51fd\u6570\u6ce8\u91ca\u544a\u8bc9\u6211\u4eec.single()\u51fd\u6570\u8ddfbind()\u51fd\u6570\u4e00\u6837,\u53ea\u4e0d\u8fc7\u662f\u6ce8\u518c\u4e00\u4e2a\u5355\u4ef6,\u5355\u4ef6\u7684callback\u5de5\u5382\u51fd\u6570\u4ec5\u8c03\u7528\u4e00\u6b21.\u7b2c\u4e00\u6b21\u521b\u5efa\u4f1a\u628a\u8d44\u6e90cache\u8d77\u6765,\u800c\u540e\u76f4\u63a5\u8fd4\u56decache.\u8fd9\u4e2acache\u5373Bindings\u7c7b\u4e2d\u7684list\u6210\u5458.\u867d\u7136\u540d\u5b57\u662flist,\u4f46\u5374\u662f\u4e00\u4e2aMap.\u6620\u5c04namespace\u5230\u5bf9\u8c61\/\u8d44\u6e90.<\/p>\n
    constructor(container) {\n        this.container = container;\n        \/**\n         * Registered bindings\n         *\/\n        this.list = new Map();   \/\/ \u660e\u660e\u662f\u4e2aMap,\u4e3a\u4f55\u53eblist\uff1fmisnomer\uff5e\uff5e\n    }\n<\/code><\/pre>\n
\u5728\u770bIoc.singleton()\u51fd\u6570\u7684\u6ce8\u91ca\u65f6\u63d0\u5230\u4e86\u5b83\u7684friend, Ioc.bind()\u51fd\u6570.\u4e8e\u662f,\u5728Ioc.bind()\u4e2d\u4e0b\u65ad\u70b9\u770b\u770b.\u53d1\u73b0\u4e86’Adonis\/Core\/Helpers’\u7684,\u4f1a\u8c03\u5230\u8fd9\u91cc.Helpers\u7adf\u7136\u4e0d\u662fsingleton,\u6709\u70b9\u610f\u5916.Ioc.bind()\u540c\u6837\u4f1a\u8c03\u7528Bindings.register()\u628a\u5de5\u5382\u51fd\u6570\u5b58\u8d77\u6765.<\/p>\n
    \/**\n     * Register a binding with a callback. The callback return value will be\n     * used when binding is resolved\n     *\/\n    bind(binding, callback) {\n        helpers_2.ensureIsFunction(callback, '\"ioc.bind\" expect 2nd argument to be a function');\n        this.bindings.register(binding, callback, false);\n        return this;\n    }\n<\/code><\/pre>\n
\u4eceIoc\u521b\u5efa\u5bf9\u8c61\/\u8d44\u6e90<\/h3>\n
\u6700\u5f00\u59cb\u770badonisjs4\u7684\u5b98\u65b9\u6587\u6863 ,\u63d0\u5230\u4eceIoc\u521b\u5efa\u5bf9\u8c61\u76f4\u63a5\u8c03\u7528Ioc.use(‘namespace’).\u540e\u6765\u770b\u5230adnoisjs\u7684\u4f5c\u8005\uff08\u5927\u4f6cHARMINDER VIRK\uff09\u5199\u7684\u4e00\u7bc7\u535a\u5ba2 https:\/\/blog.adonisjs.com\/introducing-adonisjs-v5\/<\/a> \u4e2d\u8bb2\u4ed6\u7279\u5e0c\u671b\u628aIoc\u7684use()\u5e72\u6389,\u6539\u6210\u7528EM\u7684import.\u4f46Virk\u5927\u4f6c\u6ca1\u8bf4use()\u6362\u6210import\u6709\u4ec0\u4e48\u597d\u5904.\u5176\u5b9e\u5728adonisjs5\u4e2d\uff0c\u4f7f\u7528use()\u4ecd\u7136\u662f\u53ef\u4ee5\u7684\u3002<\/p>\n
\n  If I ever wanted to improve something to AdonisJS, that was getting rid of the use method to import dependencies,
\n  …
\n  Finally, we have been able make ESM imports work with the AdonisJS IoC container. It means, you can import bindings from the container as follows:\n<\/p><\/blockquote>\n
import Route from '@ioc:Adonis\/Core\/Route'\n<\/code><\/pre>\n
\u5927\u4f6cVirk\u8fd8\u63d0\u5230,\u7528\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u80fd\u7528alias,\u7406\u7531\u662fIDE\u4f1a\u5e2e\u4f60\u8865\u5168\u540d\u79f0,\u6240\u4ee5\u4f7f\u7528\u957f\u540d\u5b57\u4e0d\u662f\u4e00\u4e2a\u95ee\u9898.<\/p>\n
\u90a3\u4e48\u6211\u4eec\u770b\u770bimport\u662f\u600e\u4e48\u8ba9Ioc\u521b\u5efa\u5bf9\u8c61\/\u8d44\u6e90\u7684.\u5728Bindings\u7c7b\u7684resolve()\u51fd\u6570\u4e2d\u4e0b\u65ad\u70b9\uff1a<\/p>\n
    \/**\n     * Resolve a binding. An exception is raised, if the binding is missing\n     *\/\n    resolve(binding) {\n        const bindingNode = this.list.get(binding);\n        if (!bindingNode) {\n            throw IocLookupException_1.IocLookupException.lookupFailed(binding);\n        }\n        let resolvedValue;\n        if (bindingNode.singleton) {\n            bindingNode.cachedValue = bindingNode.cachedValue ?? bindingNode.callback(this.container);\n            resolvedValue = bindingNode.cachedValue;\n        }\n        else {\n            resolvedValue = bindingNode.callback(this.container);\n        }\n        return resolvedValue;\n    }\n<\/code><\/pre>\n
\u8fd9\u4e2a\u51fd\u6570\u6839\u636enamespace\u7684\u540d\u5b57\u521b\u5efa\u5bf9\u8c61.\u5982\u679c\u662f\u5355\u4ef6,\u5c31\u8fd4\u56decache\u4e2d\u7684\u539f\u6709\u5bf9\u8c61\uff1b\u5982\u679c\u4e0d\u662f\u5c31\u521b\u5efa\u4e00\u4e2a\u8fd4\u56de.\u65ad\u70b9\u7b2c\u4e00\u6b21\u547d\u4e2d\u662f,resolve\u51fd\u6570\u7684binding\u53c2\u6570\u662f”adonis\/Core\/Env”.\u770b\u6765\u62e6\u5230\u4e86\u521b\u5efa\u201cdonis\/Core\/Env\u201d\u5bf9\u8c61\u7684\u4ee3\u7801.\u770b\u6808\u7684\u4e0a\u4e00\u5e27\u662fIoc.resolveBinding(),\u4e0a\u4e0a\u5e27\u5219\u662fIoc.use(),\u518d\u5f80\u4e0a\u5c31\u662fimport\u8bed\u53e5<\/p>\n
import Env from '@ioc:Adonis\/Core\/Env'\n<\/code><\/pre>\n
\u8fd9\uff5e\uff5e\uff5eimport\u4e4b\u540e\u5c31\u76f4\u63a5\u5230\u4e86Ioc.use()!!!\u9b54\u6cd5\u5440\uff5e\uff5e\u4ece\u6808\u7684\u663e\u793a\u6765\u770bimport\u8bed\u53e5\u88ab\u663e\u793a\u6210<anonymous><\/code>.\u6211\u731cimport\u5e94\u8be5\u662f\u88ab\u89e3\u6790\u6210\u4e00\u4e2a\u7279\u6b8a\u7684\u65e0\u540d\u51fd\u6570,\u800c\u6709\u67d0\u79cd\u65b9\u6cd5\u53ef\u4ee5Hook\u8fd9\u4e2a\u65e0\u540d\u51fd\u6570,\u8ba9import\u7684\u65f6\u5019,\u6a21\u5757\u540d\u524d\u9762\u4e94\u4e2a\u5b57\u7b26\u662f”@ioc:”\u65f6,\u5c31\u8df3\u53bbIoc.use().<\/p>\n
\u4e0d\u8fc7\uff0c\u540e\u6765\u6211\u641e\u61c2\u4e86\u8fd9\u4e2a\u673a\u5236\u3002adonisjs5\u81ea\u5df1\u6574\u4e86\u4e00\u4e2aTypescript\u7684\u7f16\u8bd1\u5668\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2avisitor\u6a21\u5f0f\u53ef\u4ee5\u8bbf\u95eetypescript\u88ab\u7f16\u8bd1\u6210javascript\u7684\u4ee3\u7801\u7ed3\u6784\uff0c\u5e76\u53ef\u4ee5\u505a\u4fee\u6539\u3002\u4e8e\u662f\uff0c\u7528\u8fd9\u4e2avisitor\u6a21\u5f0f\u53ef\u4ee5\u628aimport Env from ‘@ioc:Adonis\/Core\/Env’ \u66ff\u6362\u6210\u4e00\u4e2aIoc.use()\u8c03\u7528\uff0c\u8f7d\u5165\u5bf9\u8c61\u3002\u8fd9\u4e2aTypescript\u7f16\u8bd1\u5668\u5728\u8fd9\u4e2a\u5de5\u7a0b\u4e2d\uff1ahttps:\/\/github.com\/adonisjs\/require-ts<\/p>\n
\u53ea\u5199\u8fd9\u4e48\u591a\u5427.\u5176\u5b9e\u91cc\u9762\u7684\u5185\u5bb9\u8fd8\u6709\u5f88\u591a\uff5e\uff5e<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4ec0\u4e48\u662fIoc Ioc(Inversion of Control)\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f.\u5b83\u6307\u7684\u662f\u4f7f\u7528\u67d0\u5bf9\u8c61\/\u8d44\u6e90\u7684\u4ee3\u7801,\u4e0d\u8d1f\u8d23\u8be5\u5bf9\u8c61\u7684\u4f9d\u8d56\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u7ef4\u62a4,\u800c\u4ea4\u7ed9\u4e00\u4e2a\u4e13\u95e8\u7684\u5bb9\u5668\u6765\u8d1f\u8d23.\u8fd9\u6837,\u600e\u4e48\u521b\u5efa\u5bf9\u8c61\u7684\u63a7\u5236\u6743\u5c31\u8f6c\u79fb\u5230\u4e86\u8fd9\u4e2a\u4e13\u95e8\u7684\u5bb9\u5668,\u5373\u5b9e\u73b0\u4e86\u6240\u8c13\u7684\u63a7\u5236\u53cd\u8f6c.Ioc\u7528\u6765\u964d\u4f4e\u5bf9\u8c61\u4e4b\u95f4\u7531\u4f9d\u8d56\u5173\u7cfb\u4ea7\u751f\u7684\u8026\u5408.\uff08\u6309\u7167\u8f6f\u4ef6\u5de5\u7a0b\u7406\u8bba,\u4f9d\u8d56\u7b97\u662f\u6700\u5f31\u7684\u4e00\u79cd\u8026\u5408\u4e86.\u4f9d\u8d56 < \u5173\u8054 < \u805a\u5408 < \u7ec4\u5408< \u7ee7\u627f\uff09\u6211\u611f\u89c9,Ioc\u7b97\u662f\u4e00\u4e2a\u5347\u7ea7\u7248\u7684\u5de5\u5382\u6a21\u5f0f,\u5b83\u7ba1\u7406\u4e86\u5927\u91cf\u7684\u5de5\u5382\u51fd\u6570\u548c\u5bf9\u5e94\u7684\u8d44\u6e90\u540d\u79f0.\u53ef\u4ee5\u628a\u521b\u5efa\u8d44\u6e90\/\u5bf9\u8c61\u7684\u4f9d\u8d56\u5199\u5728Ioc\u91cc\u9762. adonisjs5\u4e2d\u7684Ioc \u6211\u611f\u89c9\u6709\u70b9\u5947\u602a,adonisjs5\u7684\u5b98\u65b9\u6587\u6863\u4e2d\u6ca1\u6709\u4e13\u95e8\u63d0\u53caIoc. https:\/\/docs.adonisjs.com\/guides\/introduction \u4f46\u5728adonisjs4.x https:\/\/legacy.adonisjs.com\/docs\/4.1\/ioc-container \u7684\u5b98\u65b9\u6587\u6863\u4e2d\u5374\u6709\u5355\u72ec\u7684\u4e00\u8282\u6765\u8bb2Ioc.\u4ee5\u81f3\u4e8e,\u6211\u7b2c\u4e00\u6b21\u8bfb\u5b8cadonis5\u7684\u6587\u6863\u540e,\u5bf9Ioc\u7adf\u7136\u6ca1\u4ec0\u4e48\u5370\u8c61.\u800cIoc\u5374\u662fadonis\u6700\u4e3a\u91cd\u8981\u7684\u6982\u5ff5.anyway~,\u770b\u770badonis\u7684\u6e90\u4ee3\u7801\u600e\u4e48\u5904\u7406Ioc\u5427. \u6ce8\u518cIoc \u5728adonisjs\u7684\u4ee3\u7801\u4e2d\u641c\u7d22\u4e00\u4e0b, find node_modules\/@adonisjs -iname “*ioc*” \u5f88\u5bb9\u6613\u53d1\u73b0adonisjs\u5b9e\u73b0Ioc\u7684\u4ee3\u7801\u5728node_modules\/@adonisjs\/fold\/build\/src\/Ioc\/\u8fd9\u4e2a\u76ee\u5f55\u4e2d.\u76ee\u5f55\u540d\u5c31\u662fIoc,\u6beb\u4e0d\u63a9\u9970\u81ea\u5df1\u7684\u76ee\u7684. \u901b\u4e00\u901bIoc\u8fd9\u4e2a\u76ee\u5f55\u4e0b\u7684js\u6587\u4ef6,\u53d1\u73b0\u6700\u91cd\u8981\u7684\u662findex.js \u548c binBindings.js\u8fd9\u4e24\u4e2a\u6587\u4ef6.\u5176\u4e2dindex.js\u4e2d\u6709\u4e00\u4e2a\u7c7b\u5c31\u53ebIoc, \u800c\u6ce8\u518c\u5230Ioc\u4e2d\u7684\u8d44\u6e90\u88ab\u653e\u5728Bindings.js\u6587\u4ef6\u4e2dBindings\u7c7b\u4e2d. \/** * Define a binding *\/ register(binding, callback, singleton) { this.list.set(binding, { callback, singleton }); 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