{"id":24765,"date":"2026-07-28T10:00:21","date_gmt":"2026-07-28T01:00:21","guid":{"rendered":"https:\/\/www.ecomottblog.com\/?p=24765"},"modified":"2026-07-27T16:30:55","modified_gmt":"2026-07-27T07:30:55","slug":"ioc%e3%81%a8%e3%81%af%e4%bd%95%e3%81%8b%ef%bc%9f-%e3%80%9c%e3%80%8c%e4%bd%9c%e3%82%8b%e3%80%8d%e3%81%a0%e3%81%91%e3%81%a7%e3%81%aa%e3%81%8f%e3%80%8c%e5%91%bc%e3%81%b6%e3%80%8d%e3%80%8c%e7%89%87","status":"publish","type":"post","link":"https:\/\/www.ecomottblog.com\/?p=24765","title":{"rendered":"IoC\u3068\u306f\u4f55\u304b\uff1f \u301c\u300c\u4f5c\u308b\u300d\u3060\u3051\u3067\u306a\u304f\u300c\u547c\u3076\u300d\u300c\u7247\u4ed8\u3051\u308b\u300d\u3082\u301c"},"content":{"rendered":"<p>\uff08\u524d\u56de\u8a18\u4e8b\u300c<a href=\"https:\/\/www.ecomottblog.com\/?p=20536\">\u306a\u305cSpring Boot\u306fDI\uff08\u4f9d\u5b58\u6027\u306e\u6ce8\u5165\uff09\u3092\u4f7f\u3046\u306e\u304b\uff1f<\/a>\u300d\u306e\u7d9a\u304d\u3067\u3059\uff09<\/p>\n<p>\u524d\u56de\u306f\u3001\u5bc6\u7d50\u5408\u30fb\u758e\u7d50\u5408\u306e\u9055\u3044\u304b\u3089\u59cb\u307e\u308a\u3001DI\uff08\u4f9d\u5b58\u6027\u6ce8\u5165\uff09\u304c\u306a\u305c\u5fc5\u8981\u306a\u306e\u304b\u3001\u305d\u3057\u3066Spring\u306eDI\u30b3\u30f3\u30c6\u30ca\uff08IoC\u30b3\u30f3\u30c6\u30ca\uff09\u304c\u3069\u306e\u3088\u3046\u306b\u4f9d\u5b58\u95a2\u4fc2\u3092\u81ea\u52d5\u3067\u89e3\u6c7a\u3057\u3066\u304f\u308c\u308b\u306e\u304b\u3092\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u306f\u3001\u305d\u306e\u300cDI\u30b3\u30f3\u30c6\u30ca\u300d\u306e\u3055\u3089\u306b\u5965\u306b\u3042\u308b\u8a2d\u8a08\u601d\u60f3\u2015\u2015IoC\uff08Inversion of Control\uff0f\u5236\u5fa1\u306e\u9006\u8ee2\uff09\u306b\u3064\u3044\u3066\u3001\u3067\u304d\u308b\u3060\u3051\u3084\u3055\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u306f\u3001DI\u306fIoC\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u624b\u6bb5\u306e\u3072\u3068\u3064\u3067\u3059\u3002\u3056\u3063\u304f\u308a\u8a00\u3046\u3068\u3001DI\u306f\u300c\u5fc5\u8981\u306a\u90e8\u54c1\u3092\u5916\u304b\u3089\u6e21\u3059\u4ed5\u7d44\u307f\u300d\u3001IoC\u306f\u300c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u751f\u6210\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304b\u3089\u306e\u547c\u3073\u51fa\u3057\u306e\u4e3b\u5c0e\u6a29\u3092\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u6e21\u3059\u8003\u3048\u65b9\u300d\u3067\u3059\u3002Spring\u306eDI\u30b3\u30f3\u30c6\u30ca\u306f\u300cIoC\u30b3\u30f3\u30c6\u30ca\u300d\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001IoC\u304c\u9006\u8ee2\u3055\u305b\u308b\u306e\u306f\u300c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u3060\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u30b3\u30f3\u30c6\u30ca\u304c\u7ba1\u7406\u3059\u308bBean\u3067\u306f\u3001\u751f\u6210\u30fb\u521d\u671f\u5316\u30fb\u7834\u68c4\u3092\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u4efb\u305b\u3089\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u30a4\u30d9\u30f3\u30c8\u3084Web\u30ea\u30af\u30a8\u30b9\u30c8\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u5b9f\u884c\u306a\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u5165\u53e3\u3067\u306f\u3001\u51e6\u7406\u3092\u547c\u3073\u51fa\u3059\u30bf\u30a4\u30df\u30f3\u30b0\u3082\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n<p><!--more--><\/p>\n<hr>\n<h3 id=\"\u305d\u3082\u305d\u3082ioc\u304c\u751f\u307e\u308c\u305f\u80cc\u666f\">\u305d\u3082\u305d\u3082IoC\u304c\u751f\u307e\u308c\u305f\u80cc\u666f<\/h3>\n<p>\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u4eca\u307b\u3069\u767a\u9054\u3059\u308b\u524d\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u300c\u5168\u90e8\u81ea\u5206\u3067\u3084\u308b\u300d\u306e\u304c\u5f53\u305f\u308a\u524d\u3067\u3057\u305f\u3002<\/p>\n<ul>\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u751f\u6210\u306f\u81ea\u5206\u3067 <code>new<\/code> \u3059\u308b<\/li>\n<li>\u521d\u671f\u5316\u306e\u9806\u5e8f\u306f\u81ea\u5206\u3067\u7ba1\u7406\u3059\u308b<\/li>\n<li>\u4f7f\u3044\u7d42\u308f\u3063\u305f\u30ea\u30bd\u30fc\u30b9\u306e\u89e3\u653e\u3082\u81ea\u5206\u3067\u66f8\u304f<\/li>\n<li>\u51e6\u7406\u306e\u547c\u3073\u51fa\u3057\u30bf\u30a4\u30df\u30f3\u30b0\u3082\u81ea\u5206\u3067\u6c7a\u3081\u308b<\/li>\n<\/ul>\n<p>\u30b7\u30f3\u30d7\u30eb\u306a\u30a2\u30d7\u30ea\u306a\u3089\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u30a2\u30d7\u30ea\u306e\u898f\u6a21\u304c\u5927\u304d\u304f\u306a\u308b\u3068\u3001\u3053\u306e\u300c\u5168\u90e8\u81ea\u5206\u3067\u7ba1\u7406\u3059\u308b\u300d\u30b9\u30bf\u30a4\u30eb\u306b\u9650\u754c\u304c\u6765\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u307020\u500b\u306e\u30b5\u30fc\u30d3\u30b9\u30af\u30e9\u30b9\u304c\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u304c3\u301c5\u500b\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u6301\u3063\u3066\u3044\u305f\u3089\u2500\u2500\u3002 \u521d\u671f\u5316\u9806\u5e8f\u306e\u6574\u5408\u6027\u3092\u4fdd\u3061\u3001\u6b63\u3057\u304f\u914d\u7dda\u3059\u308b\u3060\u3051\u3067\u3001\u672c\u6765\u306e\u30ed\u30b8\u30c3\u30af\u3068\u306f\u7121\u95a2\u4fc2\u306a\u81a8\u5927\u306a\u4f5c\u696d\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067<strong>\u300c\u5236\u5fa1\uff08\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\uff09\u3092\u81ea\u5206\u3067\u306f\u306a\u304f\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u4efb\u305b\u3088\u3046\u300d<\/strong>\u3068\u3044\u3046\u767a\u60f3\u304c\u751f\u307e\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u304cIoC\u3067\u3059\u3002<\/p>\n<hr>\n<h3 id=\"ioc-inversion-of-control-\u81ea\u5206\u3067\u7ba1\u7406\u3057\u306a\u3044\u3068\u3044\u3046\u8a2d\u8a08\u601d\u60f3\">IoC (Inversion of Control) \uff1a\u300c\u81ea\u5206\u3067\u7ba1\u7406\u3057\u306a\u3044\u300d\u3068\u3044\u3046\u8a2d\u8a08\u601d\u60f3<\/h3>\n<p>IoC\u3092\u4e00\u8a00\u3067\u3044\u3046\u3068\u3001<strong>Hollywood Principle\uff08\u30cf\u30ea\u30a6\u30c3\u30c9\u306e\u539f\u5247\uff09<\/strong>\u3067\u3059\u3002<\/p>\n<blockquote><p>\u201cDon\u2019t call us, we\u2019ll call you.\u201d \uff08\u541b\u304b\u3089\u96fb\u8a71\u3057\u3066\u304f\u308b\u306a\u3002\u5fc5\u8981\u306a\u3068\u304d\u306b\u3053\u3061\u3089\u304b\u3089\u547c\u3076\u304b\u3089\u3002\uff09<\/p><\/blockquote>\n<p>\u3053\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u539f\u5247\u304c\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u3069\u306e\u3088\u3046\u306b\u300c\u5236\u5fa1\u300d\u3092\u63e1\u308b\u306e\u304b\u3001\u305d\u306e\u5168\u4f53\u50cf\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u304b\u3089\u306f\u3001DI\u306e\u80cc\u666f\u306b\u3042\u308bIoC\u306e\u672c\u8cea\u3084\u3001DI\u4ee5\u5916\u306b\u3082IoC\u304c\u6d3b\u304d\u308b\u5834\u9762\u3092\u3001\u521d\u5fc3\u8005\u5411\u3051\u306b\u9806\u756a\u306b\u6574\u7406\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u203b\u672c\u8a18\u4e8b\u3067\u306fSpring Framework\u3092\u4f8b\u306b\u8aac\u660e\u3057\u307e\u3059\u304c\u3001.NET\u3084Angular\u3001NestJS\u306a\u3069\u4ed6\u306e\u591a\u304f\u306eIoC\u5bfe\u5fdc\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3082\u540c\u69d8\u306e\u8003\u3048\u65b9\u30fb\u4ed5\u7d44\u307f\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<hr>\n<h3 id=\"ioc\u304c\u7ba1\u7406\u3059\u308b\u4e16\u754c-di-\u306e\u5177\u4f53\u4f8b\u304b\u3089\u898b\u3048\u308b\u5168\u4f53\u50cf\">IoC\u304c\u7ba1\u7406\u3059\u308b\u4e16\u754c \u2500\u2500 DI \u306e\u5177\u4f53\u4f8b\u304b\u3089\u898b\u3048\u308b\u5168\u4f53\u50cf<\/h3>\n<p><strong>IoC\u4ee5\u524d\uff1a\u81ea\u5206\u304c\u5168\u90e8\u3084\u308b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u306f\u6982\u5ff5\u3092\u793a\u3059\u305f\u3081\u306b\u7c21\u7565\u5316\u3057\u305f\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre class=\"java\"><code>public class UserRepository {\n    private DataSource ds;\n    \n    public UserRepository() {\n        \/\/ 1. \u81ea\u5206\u3067\u4f5c\u308b\uff08\u751f\u6210\uff09\n        this.ds = new DataSource(\"jdbc:mysql:\/\/localhost:3306\/mydb\");\n        this.ds.init(); \/\/ 2. \u81ea\u5206\u3067\u521d\u671f\u5316\u3059\u308b\n    }\n}\n\npublic class UserService {\n    private UserRepository repo;\n    \n    public UserService() {\n        \/\/ 3. \u81ea\u5206\u3067\u7d44\u307f\u7acb\u3066\u3066\u914d\u7dda\u3059\u308b\uff08\u6ce8\u5165\uff09\n        this.repo = new UserRepository();\n    }\n    \n    public void registerUser(String name) {\n        \/\/ 4. \u81ea\u5206\u3067\u547c\u3076\uff08\u5b9f\u884c\uff09\n        repo.save(name);\n    }\n}\n\npublic class App {\n    public static void main(String[] args) {\n        UserService service = new UserService();\n        service.registerUser(\"tanaka\");\n        \n        \/\/ 5. \u81ea\u5206\u3067\u7247\u4ed8\u3051\u308b\uff08\u7834\u68c4\uff09\n        \/\/ \u2190 \u5b9f\u88c5\u3059\u308b\u306e\u304c\u8907\u96d1\u3067\u3001\u6f0f\u308c\u3084\u3059\u3044\n    }\n}<\/code><\/pre>\n<p>\u751f\u6210\u2192\u521d\u671f\u5316\u2192\u5b9f\u884c\u2192\u7834\u68c4\u3001\u3059\u3079\u3066\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u7ba1\u7406\u304c\u5404\u30af\u30e9\u30b9\u306b\u5206\u6563\u3057\u3001\u5236\u5fa1\u304c\u8907\u96d1\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>IoC\u63a1\u7528\u5f8c\uff1aSpring\u304c\u5236\u5fa1\u3092\u4ee3\u884c<\/strong><\/p>\n<pre class=\"java\"><code>@Service\npublic class UserService {\n    private final UserRepository repo;\n    \n    \/\/ \u300c\u3053\u308c\u304c\u6b32\u3057\u3044\u300d\u3068\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u5ba3\u8a00\u3059\u308b\u3060\u3051\n    public UserService(UserRepository repo) {\n        this.repo = repo;  \/\/ Spring\u304c\u5fc5\u8981\u306a\u3082\u306e\u3092\u5224\u65ad\u3057\u3066\u6e21\u3057\u3066\u304f\u308c\u308b\n    }\n\n    public void registerUser(String name) {\n        repo.save(name);   \/\/ \u81ea\u5206\u306f\u300c\u547c\u3070\u308c\u305f\u6642\u306e\u696d\u52d9\u30ed\u30b8\u30c3\u30af\u300d\u3060\u3051\u3092\u66f8\u304f\n    }\n}<\/code><\/pre>\n<p>UserService \u306f\u8ab0\u304c\u81ea\u5206\u3092\u4f5c\u308b\u306e\u304b\u3001\u3044\u3064\u7834\u68c4\u3055\u308c\u308b\u306e\u304b\u3092\u77e5\u308a\u307e\u305b\u3093\u3002Spring\u304c\u7ba1\u7406\u3059\u308b\u306e\u306f\u3001Bean\u306e\u751f\u6210\u30fb\u4f9d\u5b58\u95a2\u4fc2\u306e\u89e3\u6c7a\u30fb\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3067\u3059\u3002\u4e00\u65b9\u3001<code>registerUser()<\/code> \u306e\u3088\u3046\u306a\u901a\u5e38\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u3084\u5225\u306e\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u3001\u547c\u3073\u51fa\u3057\u5143\u304c\u660e\u793a\u7684\u306b\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<hr>\n<h3 id=\"ioc\u304c\u7ba1\u7406\u3059\u308b\u3082\u306e-di\u306e\u5148\u306b\u3042\u308b\u4e16\u754c\">IoC\u304c\u7ba1\u7406\u3059\u308b\u3082\u306e \u2500\u2500 DI\u306e\u5148\u306b\u3042\u308b\u4e16\u754c<\/h3>\n<p>DI\u3067\u30ab\u30d0\u30fc\u3055\u308c\u308b\u306e\u306f\u4e3b\u306b\u300c\u751f\u6210\u300d\u3068\u300c\u6ce8\u5165\u300d\u3067\u3059\u3002IoC\u306f\u305d\u308c\u306b\u52a0\u3048\u3066\u3001\u4ee5\u4e0b\u306e\u8981\u7d20\u3082\u5f37\u529b\u306b\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n<h4 id=\"\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u7ba1\u7406\">\u2460 \u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u7ba1\u7406<\/h4>\n<p>Spring\u306f\u3001\u30b3\u30f3\u30c6\u30ca\u304c\u7ba1\u7406\u3059\u308bBean\u3092\u3044\u3064\u521d\u671f\u5316\u3057\u3001\u3044\u3064\u7834\u68c4\u3059\u308b\u304b\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"java\"><code>@Service\npublic class DataSourceManager {\n    \n    @PostConstruct\n    public void init() {\n        \/\/ \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u751f\u6210\u5f8c\u3001\u4f9d\u5b58\u95a2\u4fc2\u306e\u6ce8\u5165\u304c\u5b8c\u4e86\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067Spring\u304c\u81ea\u52d5\u5b9f\u884c\n        System.out.println(\"\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u3092\u521d\u671f\u5316\");\n    }\n\n    @PreDestroy\n    public void cleanup() {\n        \/\/ ApplicationContext\u306e\u7d42\u4e86\u6642\u306bSpring\u304c\u81ea\u52d5\u5b9f\u884c\n        System.out.println(\"\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u3092\u89e3\u653e\");\n    }\n}<\/code><\/pre>\n<p>\u3053\u3053\u3067\u306e\u8aac\u660e\u306f\u3001\u4e3b\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u306esingleton Bean\u3092\u60f3\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002prototype Bean\u306f\u751f\u6210\u5f8c\u306e\u7834\u68c4\u3092\u30b3\u30f3\u30c6\u30ca\u304c\u81ea\u52d5\u7ba1\u7406\u3057\u306a\u3044\u305f\u3081\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5229\u7528\u5074\u3067\u5f8c\u59cb\u672b\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<h4 id=\"\u30a4\u30d9\u30f3\u30c8\u30c9\u30ea\u30d6\u30f3\u306a\u5b9f\u884c\">\u2461 \u30a4\u30d9\u30f3\u30c8\u30c9\u30ea\u30d6\u30f3\u306a\u5b9f\u884c<\/h4>\n<pre class=\"java\"><code>@Component\npublic class OrderEventListener {\n\n    @EventListener\n    public void onOrderPlaced(OrderPlacedEvent event) {\n        \/\/ \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u884c\u3057\u305f\u30a4\u30d9\u30f3\u30c8\u3092Spring\u304c\u53d7\u3051\u53d6\u308a\u3001\u81ea\u52d5\u3067\u547c\u3073\u51fa\u3059\n        System.out.println(\"\u6ce8\u6587\u30a4\u30d9\u30f3\u30c8\u53d7\u4fe1: \" + event.getOrderId());\n    }\n}<\/code><\/pre>\n<p><code>@EventListener<\/code> \u3060\u3051\u3067\u6ce8\u6587\u3092\u81ea\u52d5\u691c\u77e5\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6ce8\u6587\u51e6\u7406\u5074\u304c <code>ApplicationEventPublisher<\/code> \u306a\u3069\u3092\u4f7f\u3044\u3001<code>OrderPlacedEvent<\/code> \u3092\u767a\u884c\u3059\u308b\u3068\u3001Spring\u304c\u5bfe\u5fdc\u3059\u308b\u30ea\u30b9\u30ca\u30fc\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n<h4 id=\"\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u5b9f\u884c\">\u2462 \u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u5b9f\u884c<\/h4>\n<p>\u30bf\u30a4\u30de\u30fc\u7ba1\u7406\u3084\u30b9\u30ec\u30c3\u30c9\u5236\u5fa1\u3068\u3044\u3046\u8907\u96d1\u306a\u300c\u5236\u5fa1\u300d\u3082\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u59d4\u306d\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u5b9f\u884c\u3092\u4f7f\u3046\u306b\u306f\u3001\u8a2d\u5b9a\u30af\u30e9\u30b9\u306a\u3069\u3067 <code>@EnableScheduling<\/code> \u3092\u6709\u52b9\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"java\"><code>@Configuration\n@EnableScheduling\npublic class SchedulingConfig {\n}<\/code><\/pre>\n<pre class=\"java\"><code>@Component\npublic class ReportJob {\n\n    @Scheduled(cron = \"0 0 9 * * *\")\n    public void generateDailyReport() {\n        \/\/ \u6bce\u671d9\u6642\u306b\u306a\u3063\u305f\u3089Spring\u304c\u81ea\u52d5\u5b9f\u884c\u3002\u30eb\u30fc\u30d7\u51e6\u7406\u306a\u3069\u3092\u81ea\u5206\u3067\u66f8\u304f\u5fc5\u8981\u306f\u306a\u3044\n        System.out.println(\"\u65e5\u6b21\u30ec\u30dd\u30fc\u30c8\u3092\u751f\u6210\");\n    }\n}<\/code><\/pre>\n<h4 id=\"\u30b9\u30b3\u30fc\u30d7\u7ba1\u7406-\u4f55\u500b\u4f5c\u308b\u304b\u3092\u5ba3\u8a00\u3059\u308b\">\u2463 \u30b9\u30b3\u30fc\u30d7\u7ba1\u7406 \u2500\u2500 \u300c\u4f55\u500b\u4f5c\u308b\u304b\u300d\u3092\u5ba3\u8a00\u3059\u308b<\/h4>\n<p>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u300c\u6bce\u56de\u65b0\u3057\u304f\u4f5c\u308b\u306e\u304b\u300d\u300c\u540c\u3058\u3082\u306e\u3092\u4f7f\u3044\u56de\u3059\u306e\u304b\u300d\u306f\u3001\u958b\u767a\u8005\u304c\u30b9\u30b3\u30fc\u30d7\u3068\u3057\u3066\u5ba3\u8a00\u3057\u307e\u3059\u3002Spring\u306f\u305d\u306e\u5ba3\u8a00\u306b\u5f93\u3063\u3066\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr class=\"header\">\n<th>\u30b9\u30b3\u30fc\u30d7<\/th>\n<th>\u52d5\u4f5c<\/th>\n<th>\u4f7f\u3044\u3069\u3053\u308d<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"odd\">\n<td><strong>singleton<\/strong>\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09<\/td>\n<td>1\u3064\u306eApplicationContext\u5185\u30671\u3064\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f7f\u3044\u56de\u3059<\/td>\n<td>\u307e\u305a\u306f\u3053\u308c\u3092\u899a\u3048\u308c\u3070\u5341\u5206<\/td>\n<\/tr>\n<tr class=\"even\">\n<td><strong>prototype<\/strong><\/td>\n<td>\u53d6\u308a\u51fa\u3059\u305f\u3073\u306b\u65b0\u3057\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u308b<\/td>\n<td>\u4f7f\u3044\u6368\u3066\u306e\u4e00\u6642\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/td>\n<\/tr>\n<tr class=\"odd\">\n<td><strong>request<\/strong><\/td>\n<td>HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3054\u3068\u306b1\u3064\u4f5c\u308b<\/td>\n<td>Web\u30ea\u30af\u30a8\u30b9\u30c8\u56fa\u6709\u306e\u60c5\u5831\u4fdd\u6301<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>prototype\u30b9\u30b3\u30fc\u30d7\u306e\u6ce8\u610f\u70b9 \u2500\u2500 \u300c\u5ba3\u8a00\u300d\u3068\u300c\u53d6\u5f97\u300d\u3092\u5206\u3051\u308b<\/strong><\/p>\n<p>prototype\u30b9\u30b3\u30fc\u30d7\u306f\u300c\u6bce\u56de\u65b0\u3057\u304f\u4f5c\u308b\u300d\u8a2d\u5b9a\u3067\u3059\u304c\u3001singleton \u306e bean \u306b\u305d\u306e\u307e\u307e\u6ce8\u5165\u3059\u308b\u3068\u3001\u6700\u521d\u306e1\u56de\u3060\u3051\u3057\u304b\u53d6\u308a\u51fa\u3055\u308c\u307e\u305b\u3093\u3002\u6bce\u56de\u65b0\u3057\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u307b\u3057\u3044\u3068\u304d\u306f\u3001\u5fc5\u8981\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u53d6\u308a\u306b\u3044\u304f\u5f62\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"java\"><code>@Component\n@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)\npublic class TempFileWriter {\n    public void write(String orderId) {\n    }\n}\n\n\/\/ \u274c \u6ce8\u5165\u3057\u305f\u6642\u70b9\u30671\u56de\u3060\u3051\u4f5c\u3089\u308c\u3001\u305d\u306e\u5f8c\u306f\u540c\u3058\u3082\u306e\u304c\u4f7f\u308f\u308c\u308b\n@Service\npublic class OrderService {\n    private final TempFileWriter writer;\n    \n    public OrderService(TempFileWriter writer) {\n        this.writer = writer;  \/\/ \u4ee5\u964d\u305a\u3063\u3068\u540c\u3058\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n    }\n}\n\n\/\/ \u2705 \u5fc5\u8981\u306a\u3068\u304d\u306b\u53d6\u308a\u306b\u3044\u304f\u2500\u2500\u6bce\u56de\u65b0\u3057\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n@Service\npublic class OrderService {\n    private final ObjectProvider&lt;TempFileWriter&gt; writerProvider;\n    \n    public OrderService(ObjectProvider&lt;TempFileWriter&gt; writerProvider) {\n        this.writerProvider = writerProvider;\n    }\n    \n    public void processOrder(String orderId) {\n        TempFileWriter writer = writerProvider.getObject();\n        writer.write(orderId);\n    }\n}<\/code><\/pre>\n<hr>\n<h3 id=\"ioc\u304c\u306a\u3044\u3068\u3069\u3046\u306a\u308b\u304b-\u5b9f\u52d9\u3067\u306e\u75db\u307f\">IoC\u304c\u306a\u3044\u3068\u3069\u3046\u306a\u308b\u304b \u2500\u2500 \u5b9f\u52d9\u3067\u306e\u75db\u307f<\/h3>\n<p>IoC\u3092\u4f7f\u308f\u305a\u3001\u3059\u3079\u3066\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u81ea\u5206\u3067\u89e3\u6c7a\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001<code>main<\/code> \u95a2\u6570\u306f\u300c\u5de8\u5927\u306a\u914d\u7dda\u56f3\u300d\u3068\u5316\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u3010Before\u3011IoC\u304c\u306a\u3044\u4e16\u754c\uff1a\u914d\u7dda\u3060\u3051\u3067\u529b\u5c3d\u304d\u308b<\/strong><\/p>\n<pre class=\"java\"><code>public class App {\n    public static void main(String[] args) {\n        \/\/ 1. \u81a8\u5927\u306a\u521d\u671f\u5316\u3068\u914d\u7dda\u30b3\u30fc\u30c9\uff08\uff1d\u5236\u5fa1\u3092\u81ea\u5206\u304c\u6301\u3063\u3066\u3044\u308b\uff09\n        Config config = new Config(\"app.properties\");\n        DataSource ds = new DataSource(config.getDbUrl());\n        ds.init();\n        \n        MailSender mail = new MailSender(config.getSmtpHost());\n        FileStorage storage = new FileStorage(config.getStoragePath());\n        \n        UserRepository userRepo = new UserRepository(ds);\n        OrderRepository orderRepo = new OrderRepository(ds);\n        \n        NotificationService notification = new NotificationService(mail);\n        UserService userService = new UserService(userRepo, notification);\n        \n        \/\/ 2. \u4f9d\u5b58\u306e\u9806\u5e8f\u3092\u9593\u9055\u3048\u308b\u3068\u52d5\u304b\u306a\u3044\n        OrderService orderService = new OrderService(orderRepo, userService, storage);\n\n        \/\/ 3. \u3088\u3046\u3084\u304f\u672c\u984c\uff08\u696d\u52d9\u30ed\u30b8\u30c3\u30af\uff09\n        orderService.placeOrder(\"12345\");\n\n        \/\/ 4. \u5f8c\u7247\u4ed8\u3051\u3082\u624b\u52d5\n        ds.close();\n    }\n}<\/code><\/pre>\n<p>\u65b0\u3057\u3044\u90e8\u54c1\uff08\u30af\u30e9\u30b9\uff09\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3073\u306b\u3001\u3053\u306e main \u95a2\u6570\u306e\u300c\u914d\u7dda\u56f3\u300d\u3092\u66f8\u304d\u63db\u3048\u3001\u4f9d\u5b58\u9806\u5e8f\u306b\u6c17\u3092\u914d\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u3010After\u3011IoC\u304c\u3042\u308b\u4e16\u754c\uff1a\u4f9d\u5b58\u95a2\u4fc2\u3092\u5ba3\u8a00\u3059\u308b<\/strong><\/p>\n<p>IoC\u3092\u63a1\u7528\u3059\u308b\u3068\u3001\u5404\u30af\u30e9\u30b9\u306f\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067<strong>\u300c\u81ea\u5206\u306f\u3053\u308c\u304c\u6b32\u3057\u3044\u300d\u3068\u5ba3\u8a00\u3059\u308b\u3060\u3051<\/strong>\u306b\u306a\u308a\u307e\u3059\u3002\u914d\u7dda\u306e\u8a73\u7d30\u306f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30b9\u30ad\u30e3\u30f3\u3084 <code>@Bean<\/code> \u5b9a\u7fa9\u306a\u3069\u306e\u8a2d\u5b9a\u5074\u306b\u5206\u96e2\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"java\"><code>@Service\npublic class OrderService {\n    private final OrderRepository orderRepo;\n    private final UserService userService;\n    private final FileStorage storage;\n\n    \/\/ \u300c\u3053\u308c\u304c\u6b32\u3057\u3044\u300d\u3068\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u5ba3\u8a00\u3059\u308b\u3060\u3051\u3002\n    \/\/ \u5177\u4f53\u7684\u306b\u8ab0\u304c\u3069\u3046\u4f5c\u308b\u304b\u306f\u3001Spring\uff08IoC\u30b3\u30f3\u30c6\u30ca\uff09\u306b\u304a\u4efb\u305b\u3002\n    public OrderService(OrderRepository orderRepo,\n                        UserService userService,\n                        FileStorage storage) {\n        this.orderRepo = orderRepo;\n        this.userService = userService;\n        this.storage = storage;\n    }\n\n    public void placeOrder(String orderId) {\n        \/\/ \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3084\u521d\u671f\u5316\u3092\u610f\u8b58\u305b\u305a\u3001\u3059\u3050\u306b\u696d\u52d9\u30ed\u30b8\u30c3\u30af\u306b\u96c6\u4e2d\u3067\u304d\u308b\n        orderRepo.save(orderId);\n        userService.notifyUser(orderId);\n    }\n}<\/code><\/pre>\n<p>\u3053\u306e\u6bd4\u8f03\u304b\u3089\u308f\u304b\u308b\u901a\u308a\u3001IoC\u3092\u5c0e\u5165\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<ul>\n<li><strong>\u914d\u7dda\u306e\u8a73\u7d30\u3092\u5206\u96e2\u3067\u304d\u308b<\/strong>\uff1amain \u95a2\u6570\u306a\u3069\u3067 <code>new<\/code> \u3092\u7e70\u308a\u8fd4\u3059\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u307e\u3059<\/li>\n<li><strong>\u4f9d\u5b58\u9806\u5e8f\u304b\u3089\u306e\u89e3\u653e<\/strong>\uff1a\u300cA\u3092\u4f5c\u308b\u524d\u306bB\u3092\u4f5c\u3089\u306a\u304d\u3083\u2026\u300d\u3068\u3044\u3063\u305f\u9806\u5e8f\u7ba1\u7406\u3092Spring\u304c\u81ea\u52d5\u3067\u884c\u3044\u307e\u3059<\/li>\n<li><strong>\u8cac\u52d9\u306e\u96c6\u4e2d<\/strong>\uff1a\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u300c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u7d44\u307f\u7acb\u3066\u300d\u3068\u3044\u3046\u4f5c\u696d\u304b\u3089\u89e3\u653e\u3055\u308c\u3001\u672c\u6765\u306e\u76ee\u7684\u3067\u3042\u308b<strong>\u300c\u696d\u52d9\u30ed\u30b8\u30c3\u30af\u300d<\/strong>\u306e\u8a18\u8ff0\u306b\u96c6\u4e2d\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059<\/li>\n<\/ul>\n<hr>\n<h3 id=\"\u307e\u3068\u3081ioc\u304c\u9006\u8ee2\u3055\u305b\u308b3\u3064\u306e\u5236\u5fa1\">\u307e\u3068\u3081\uff1aIoC\u304c\u9006\u8ee2\u3055\u305b\u308b3\u3064\u306e\u5236\u5fa1<\/h3>\n<table>\n<thead>\n<tr class=\"header\">\n<th>\u5236\u5fa1\u306e\u5bfe\u8c61<\/th>\n<th>\u5f93\u6765\u306e\u30b3\u30fc\u30c9\uff08\u4e3b\u5c0e\uff1a\u81ea\u5206\uff09<\/th>\n<th>IoC\uff08\u4e3b\u5c0e\uff1a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"odd\">\n<td><strong>\u751f\u6210\u30fb\u6ce8\u5165<\/strong><\/td>\n<td>\u81ea\u5206\u3067 <code>new<\/code> \u3057\u3066\u6e21\u3059<\/td>\n<td>\u30b3\u30f3\u30c6\u30ca\u304c\u4f5c\u308a\u3001\u81ea\u52d5\u3067\u6ce8\u5165\u3059\u308b<\/td>\n<\/tr>\n<tr class=\"even\">\n<td><strong>\u5b9f\u884c\u30bf\u30a4\u30df\u30f3\u30b0<\/strong><\/td>\n<td>\u81ea\u5206\u3067\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3076<\/td>\n<td>\u30a4\u30d9\u30f3\u30c8\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u306a\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u5165\u53e3\u3067\u547c\u3070\u308c\u308b<\/td>\n<\/tr>\n<tr class=\"odd\">\n<td><strong>\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb<\/strong><\/td>\n<td>\u81ea\u5206\u3067\u521d\u671f\u5316\u30fb\u7834\u68c4\u3092\u66f8\u304f<\/td>\n<td>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u5f93\u3044\u81ea\u52d5\u3067\u7ba1\u7406\u3055\u308c\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>DI\u306fIoC\u3068\u3044\u3046\u5de8\u5927\u306a\u6c37\u5c71\u306e\u4e00\u89d2\u306b\u904e\u304e\u307e\u305b\u3093\u3002<\/strong><\/p>\n<p><strong>\u300c\u5236\u5fa1\u306e\u6d41\u308c\u305d\u306e\u3082\u306e\u3092\u660e\u3051\u6e21\u3059\u300d<\/strong>\u3053\u3068\u3067\u5f97\u3089\u308c\u308b\u67d4\u8edf\u6027\u3068\u4fdd\u5b88\u6027\u3053\u305d\u304c\u3001IoC\u306e\u771f\u4fa1\u3067\u3059\u3002\u624b\u653e\u3057\u305f\u4e3b\u5c0e\u6a29\u306e\u5206\u3060\u3051\u3001\u3042\u306a\u305f\u306e\u30b3\u30fc\u30c9\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u8aad\u307f\u3084\u3059\u304f\u306a\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<p data-start=\"4045\" data-end=\"4182\">&nbsp;<\/p>\n<p data-start=\"34\" data-end=\"138\">\u30a8\u30b3\u30e2\u30c3\u30c8\u3067\u306f\u3001Spring Boot\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u6700\u65b0\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u3001<\/p>\n<p data-start=\"34\" data-end=\"138\">IoT\u306b\u95a2\u9023\u3059\u308b\u591a\u5f69\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<p data-start=\"34\" data-end=\"138\">\u79c1\u305f\u3061\u3068\u4e00\u7dd2\u306b\u3001\u9769\u65b0\u7684\u306a\u30e2\u30ce\u3065\u304f\u308a\u306b\u6311\u6226\u3057\u3001\u672a\u6765\u3092\u5275\u308b\u4ef2\u9593\u3092\u52df\u96c6\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<div style=\"margin-bottom: 32px; text-align: center;\"><a style=\"border: solid 1px #1ABB9A; padding: 16px 72px;\" href=\"https:\/\/www.ecomott.co.jp\/recruit\/?__hstc=42779642.76f9c1b6731348a1b4133ac7d2d6aa41.1714096199012.1722386207987.1722406485127.12&amp;__hssc=42779642.37.1722406485127&amp;__hsfp=1113258742\" target=\"_blank\" rel=\"noopener\">\u52df\u96c6\u8981\u9805<\/a><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uff08\u524d\u56de\u8a18\u4e8b\u300c\u306a\u305cSpring Boot\u306fDI\uff08\u4f9d\u5b58\u6027\u306e\u6ce8\u5165\uff09\u3092\u4f7f\u3046\u306e\u304b\uff1f\u300d\u306e\u7d9a\u304d\u3067\u3059\uff09 \u524d\u56de\u306f\u3001\u5bc6\u7d50\u5408\u30fb\u758e\u7d50\u5408\u306e\u9055\u3044\u304b\u3089\u59cb\u307e\u308a\u3001DI\uff08\u4f9d\u5b58\u6027\u6ce8\u5165\uff09\u304c\u306a\u305c\u5fc5\u8981\u306a\u306e\u304b\u3001\u305d\u3057\u3066Spring\u306eDI\u30b3\u30f3\u30c6\u30ca\uff08IoC\u30b3\u30f3\u30c6\u30ca\uff09\u304c\u3069\u306e [&hellip;]<\/p>\n","protected":false},"author":106,"featured_media":16058,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27,29],"tags":[487,369],"_links":{"self":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts\/24765"}],"collection":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/users\/106"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=24765"}],"version-history":[{"count":6,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts\/24765\/revisions"}],"predecessor-version":[{"id":24774,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/posts\/24765\/revisions\/24774"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=\/wp\/v2\/media\/16058"}],"wp:attachment":[{"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=24765"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24765"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecomottblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}