Spring Boot\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001Java\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u306f\u3001\u30b3\u30fc\u30c9\u306b\u8ffd\u52a0\u60c5\u5831\u3092\u4ed8\u52a0\u3059\u308bJava\u306e\u6a5f\u80fd\u3067\u3001\u5b9f\u884c\u6642\u3084\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u7279\u5225\u306a\u51e6\u7406\u3092\u884c\u3046\u305f\u3081\u306e\u30de\u30fc\u30ab\u30fc\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002Spring Boot\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u7279\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u958b\u767a\u52b9\u7387\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n
\u76ee\u6b21 <\/p>\n
\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u5411\u4e0a\u3055\u305b\u3001\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b7\u30f3\u30d7\u30eb\u306a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u4f7f\u7528\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n
@Deprecated\npublic void oldMethod() {\n \/\/ \u975e\u63a8\u5968\u306e\u30e1\u30bd\u30c3\u30c9\n}<\/pre>\n\n\n\n\u3053\u306e@Deprecated<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u304c\u975e\u63a8\u5968\u3067\u3042\u308b\u3053\u3068\u3092\u4ed6\u306e\u958b\u767a\u8005\u306b\u660e\u78ba\u306b\u4f1d\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<\/i><\/span>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u91cd\u8981\u6027<\/div><\/div>\n\n- \u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u5411\u4e0a<\/li>\n\n\n\n
- \u8a2d\u5b9a\u306e\u7c21\u7d20\u5316<\/li>\n\n\n\n
- \u30a2\u30b9\u30da\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\uff08AOP\uff09\u306e\u5b9f\u73fe<\/li>\n\n\n\n
- \u30c6\u30b9\u30c8\u306e\u5bb9\u6613\u3055<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n\n\n\n
1.2 Spring Boot\u306b\u304a\u3051\u308b\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u5f79\u5272<\/h2>\n\n\n\n
Spring Boot\u3067\u306f\u3001\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u4e2d\u6838\u3092\u6210\u3057\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n
<\/i><\/span>\u5f79\u5272<\/div><\/div>\n\n- \u81ea\u52d5\u8a2d\u5b9a\u306e\u6709\u52b9\u5316<\/strong>:
@SpringBootApplication<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u3001\u81ea\u52d5\u8a2d\u5b9a\u3092\u6709\u52b9\u306b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n- \u4f9d\u5b58\u6027\u6ce8\u5165\u306e\u7ba1\u7406<\/strong>:
@Autowired<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u308a\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u81ea\u52d5\u7684\u306b\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/li>\n\n\n\n- \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b9\u30ad\u30e3\u30f3\u3068\u767b\u9332<\/strong>:
@Component<\/code>\u3001@Service<\/code>\u3001@Repository<\/code>\u306a\u3069\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30b9\u3092Spring Boot\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3057\u3066\u767b\u9332\u3057\u307e\u3059\u3002<\/li>\n\n\n\n- Web API\u306e\u69cb\u7bc9<\/strong>:
@RestController<\/code>\u3068@RequestMapping<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001RESTful API\u3092\u7c21\u5358\u306b\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n<\/div><\/div><\/div>\n\n\n\n\u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306f\u7c21\u5358\u306aREST\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n
@RestController\n@RequestMapping(\"\/api\")\npublic class SimpleController {\n @GetMapping(\"\/hello\")\n public String sayHello() {\n return \"Hello, Spring Boot!\";\n }\n}<\/pre>\n\n\n\n\u3053\u306e\u3088\u3046\u306b\u3001Spring Boot\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5c11\u306a\u3044\u8a18\u8ff0\u91cf\u3067\u591a\u304f\u306e\u6a5f\u80fd\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u958b\u767a\u901f\u5ea6\u304c\u5411\u4e0a\u3057\u3001\u30b3\u30fc\u30c9\u306e\u4e00\u8cab\u6027\u304c\u7dad\u6301\u3055\u308c\u3001\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u306e\u7d71\u5408\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u300115\u500b\u306e\u91cd\u8981\u306aSpring Boot\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3001\u305d\u308c\u305e\u308c\u306e\u4f7f\u7528\u65b9\u6cd5\u3068\u5229\u70b9\u3092\u63a2\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
2. Spring Boot\u306e15\u500b\u306e\u91cd\u8981\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u89e3\u8aac<\/h1>\n\n\n\n
Spring Boot\u306f\u3001\u958b\u767a\u8005\u306e\u751f\u7523\u6027\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u591a\u304f\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u6700\u3082\u91cd\u8981\u306a15\u500b\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
2.1 @SpringBootApplication\uff1a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n
@SpringBootApplication<\/code>\u306f\u3001Spring Boot\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8d77\u70b9\u3068\u306a\u308b\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002<\/p>\n\n\n\n@SpringBootApplication\npublic class MyApplication {\n public static void main(String[] args) {\n SpringApplication.run(MyApplication.class, args);\n }\n}<\/pre>\n\n\n\n\u3053\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u4ee5\u4e0b\u306e3\u3064\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u3082\u306e\u3067\u3059\uff1a<\/p>\n\n\n\n
\n@SpringBootConfiguration<\/code>: Java\u30d9\u30fc\u30b9\u306e\u8a2d\u5b9a\u30af\u30e9\u30b9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059<\/li>\n\n\n\n@EnableAutoConfiguration<\/code>: Spring Boot\u306e\u81ea\u52d5\u8a2d\u5b9a\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u6709\u52b9\u306b\u3059\u308b<\/li>\n\n\n\n@ComponentScan<\/code>: \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u81ea\u52d5\u7684\u306b\u30b9\u30ad\u30e3\u30f3\u3059\u308b<\/li>\n<\/ul>\n\n\n\n2.2 @Configuration\uff1a\u8a2d\u5b9a\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9<\/h2>\n\n\n\n
@Configuration<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30af\u30e9\u30b9\u304cBean\u306e\u5b9a\u7fa9\u3092\u542b\u3080\u8a2d\u5b9a\u30af\u30e9\u30b9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Configuration\npublic class AppConfig {\n @Bean\n public MyService myService() {\n return new MyServiceImpl();\n }\n}<\/pre>\n\n\n\n2.3 @Component, @Service, @Repository\uff1a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30b9\u30ad\u30e3\u30f3\u3068DI<\/h2>\n\n\n\n
\u3053\u308c\u3089\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30af\u30e9\u30b9\u3092Spring\u7ba1\u7406\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3057\u3066\u767b\u9332\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\n@Component<\/code>: \u6c4e\u7528\u7684\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/li>\n\n\n\n@Service<\/code>: \u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u542b\u3080\u30b5\u30fc\u30d3\u30b9\u30af\u30e9\u30b9<\/li>\n\n\n\n@Repository<\/code>: \u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u3092\u62c5\u5f53\u3059\u308b\u30af\u30e9\u30b9<\/li>\n<\/ul>\n\n\n\n@Service\npublic class UserService {\n \/\/ \u30b5\u30fc\u30d3\u30b9\u306e\u5b9f\u88c5\n}\n\n@Repository\npublic class UserRepository {\n \/\/ \u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u306e\u5b9f\u88c5\n}<\/pre>\n\n\n\n2.4 @Autowired\uff1a\u4f9d\u5b58\u6027\u306e\u81ea\u52d5\u6ce8\u5165<\/h2>\n\n\n\n
@Autowired<\/code>\u306f\u3001Spring\u306eDI\u30b3\u30f3\u30c6\u30ca\u306b\u4f9d\u5b58\u6027\u306e\u6ce8\u5165\u3092\u6307\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Service\npublic class UserService {\n @Autowired\n private UserRepository userRepository;\n\n \/\/ UserRepository\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\n}<\/pre>\n\n\n\n\u6ce8\u610f\uff1a\u5faa\u74b0\u4f9d\u5b58\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u6ce8\u5165\u3092\u63a8\u5968\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
2.5 @RestController\uff1aRESTful API\u306e\u4f5c\u6210<\/h2>\n\n\n\n
@RestController<\/code>\u306f\u3001@Controller<\/code>\u3068@ResponseBody<\/code>\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u3001RESTful Web\u30b5\u30fc\u30d3\u30b9\u3092\u7c21\u5358\u306b\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n@RestController\n@RequestMapping(\"\/api\/users\")\npublic class UserController {\n @GetMapping(\"\/{id}\")\n public User getUser(@PathVariable Long id) {\n \/\/ \u30e6\u30fc\u30b6\u30fc\u53d6\u5f97\u30ed\u30b8\u30c3\u30af\n }\n}<\/pre>\n\n\n\n2.6 @RequestMapping\uff1aURL\u30de\u30c3\u30d4\u30f3\u30b0\u306e\u8a2d\u5b9a<\/h2>\n\n\n\n
@RequestMapping<\/code>\u306f\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u7279\u5b9a\u306e\u30e1\u30bd\u30c3\u30c9\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@RestController\n@RequestMapping(\"\/api\")\npublic class ApiController {\n @RequestMapping(value = \"\/hello\", method = RequestMethod.GET)\n public String sayHello() {\n return \"Hello, World!\";\n }\n}<\/pre>\n\n\n\n\u3088\u308a\u5177\u4f53\u7684\u306a\u30de\u30c3\u30d4\u30f3\u30b0\u306b\u306f\u3001@GetMapping<\/code>, @PostMapping<\/code>, @PutMapping<\/code>, @DeleteMapping<\/code>\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n2.7 @PathVariable, @RequestParam\uff1a\u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u53d6\u5f97<\/h2>\n\n\n\n
\u3053\u308c\u3089\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u304b\u3089\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
@GetMapping(\"\/users\/{id}\")\npublic User getUser(@PathVariable Long id, @RequestParam(required = false) String fields) {\n \/\/ id\u306f\u30d1\u30b9\u5909\u6570\u3001fields\u306f\u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\n}<\/pre>\n\n\n\n2.8 @RequestBody\uff1a\u30ea\u30af\u30a8\u30b9\u30c8\u30dc\u30c7\u30a3\u306e\u89e3\u6790<\/h2>\n\n\n\n
@RequestBody<\/code>\u306f\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u30dc\u30c7\u30a3\u3092 Java \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@PostMapping(\"\/users\")\npublic User createUser(@RequestBody User user) {\n \/\/ user\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u3092\u4f5c\u6210\n}<\/pre>\n\n\n\n2.9 @ResponseBody\uff1a\u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u306e\u751f\u6210<\/h2>\n\n\n\n
@ResponseBody<\/code>\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u3092HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u306b\u76f4\u63a5\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002@RestController<\/code>\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u6697\u9ed9\u7684\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n2.10 @Entity\uff1aJPA\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u5b9a\u7fa9<\/h2>\n\n\n\n
@Entity<\/code>\u306f\u3001\u30af\u30e9\u30b9\u304cJPA\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Entity\npublic class User {\n @Id\n @GeneratedValue(strategy = GenerationType.IDENTITY)\n private Long id;\n private String username;\n \/\/ \u30b2\u30c3\u30bf\u30fc\u3001\u30bb\u30c3\u30bf\u30fc\n}<\/pre>\n\n\n\n2.11 @Table\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c6\u30fc\u30d6\u30eb\u3068\u306e\u30de\u30c3\u30d4\u30f3\u30b0<\/h2>\n\n\n\n
@Table<\/code>\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30af\u30e9\u30b9\u3068\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c6\u30fc\u30d6\u30eb\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Entity\n@Table(name = \"users\", schema = \"app_schema\")\npublic class User {\n \/\/ \u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u30e1\u30bd\u30c3\u30c9\n}<\/pre>\n\n\n\n2.12 @Id, @GeneratedValue\uff1a\u4e3b\u30ad\u30fc\u306e\u8a2d\u5b9a<\/h2>\n\n\n\n
@Id<\/code>\u306f\u4e3b\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u3001@GeneratedValue<\/code>\u306f\u4e3b\u30ad\u30fc\u306e\u751f\u6210\u6226\u7565\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Entity\npublic class Product {\n @Id\n @GeneratedValue(strategy = GenerationType.SEQUENCE)\n private Long id;\n \/\/ \u4ed6\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\n}<\/pre>\n\n\n\n2.13 @Transactional\uff1a\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u7ba1\u7406<\/h2>\n\n\n\n
@Transactional<\/code>\u306f\u3001\u30e1\u30bd\u30c3\u30c9\u3084\u30af\u30e9\u30b9\u306b\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5883\u754c\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Service\npublic class OrderService {\n @Transactional\n public void placeOrder(Order order) {\n \/\/ \u6ce8\u6587\u51e6\u7406\u30ed\u30b8\u30c3\u30af\n }\n}<\/pre>\n\n\n\n2.14 @Value\uff1a\u30d7\u30ed\u30d1\u30c6\u30a3\u5024\u306e\u6ce8\u5165<\/h2>\n\n\n\n
@Value<\/code>\u306f\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u30d5\u30a1\u30a4\u30eb\u3084\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u304b\u3089\u5024\u3092\u6ce8\u5165\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Component\npublic class AppConfig {\n @Value(\"${app.name}\")\n private String appName;\n\n \/\/ appName\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\n}<\/pre>\n\n\n\n2.15 @Profile\uff1a\u74b0\u5883\u5225\u306e\u8a2d\u5b9a<\/h2>\n\n\n\n
@Profile<\/code>\u306f\u3001\u7279\u5b9a\u306e\u74b0\u5883\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3067\u306e\u307f\u9069\u7528\u3055\u308c\u308b\u8a2d\u5b9a\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Configuration\n@Profile(\"development\")\npublic class DevConfig {\n @Bean\n public DataSource dataSource() {\n \/\/ \u958b\u767a\u74b0\u5883\u7528\u306e\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u8a2d\u5b9a\n }\n}<\/pre>\n\n\n\n\u3053\u308c\u3089\u306e15\u500b\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001Spring Boot\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306e\u57fa\u790e\u3068\u306a\u308a\u307e\u3059\u3002\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30af\u30ea\u30fc\u30f3\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u3001\u958b\u767a\u52b9\u7387\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u5b9f\u8df5\u7684\u306a\u4f8b\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
3. \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h1>\n\n\n\n
Spring Boot\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u52b9\u679c\u7684\u306b\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001\u5358\u306b\u500b\u3005\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7406\u89e3\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u308c\u3089\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u306e\u7bc0\u3067\u306f\u3001\u5b9f\u969b\u306e\u30b7\u30ca\u30ea\u30aa\u306b\u57fa\u3065\u3044\u305f\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
3.1 RESTful API\u306e\u69cb\u7bc9\uff1a@RestController\u3068\u95a2\u9023\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u6d3b\u7528<\/h2>\n\n\n\n
RESTful API\u3092\u69cb\u7bc9\u3059\u308b\u969b\u306f\u3001@RestController<\/code>\u3092\u4e2d\u5fc3\u306b\u3001\u69d8\u3005\u306a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@RestController\n@RequestMapping(\"\/api\/v1\/users\")\npublic class UserController {\n private final UserService userService;\n\n public UserController(UserService userService) {\n this.userService = userService;\n }\n\n @GetMapping(\"\/{id}\")\n public ResponseEntity<User> getUser(@PathVariable Long id) {\n return userService.findById(id)\n .map(ResponseEntity::ok)\n .orElse(ResponseEntity.notFound().build());\n }\n\n @PostMapping\n public ResponseEntity<User> createUser(@Valid @RequestBody User user) {\n User savedUser = userService.save(user);\n return ResponseEntity.created(URI.create(\"\/api\/v1\/users\/\" + savedUser.getId())).body(savedUser);\n }\n}<\/pre>\n\n\n\n\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n
\n- \u9069\u5207\u306aHTTP\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3001\u610f\u5473\u306e\u3042\u308bURL\u3092\u8a2d\u8a08\u3059\u308b<\/li>\n\n\n\n
- \u30d0\u30fc\u30b8\u30e7\u30cb\u30f3\u30b0\u3092\u8003\u616e\u3057\u3001API\u306e\u9032\u5316\u306b\u5099\u3048\u308b<\/li>\n\n\n\n
@Valid<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u5165\u529b\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046<\/li>\n\n\n\n- \u9069\u5207\u306a\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u3092\u8fd4\u3059<\/li>\n<\/ul>\n\n\n\n
3.2 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u306e\u6700\u9069\u5316\uff1a@Entity\u3068@Repository\u306e\u9023\u643a<\/h2>\n\n\n\n
JPA\uff08Java Persistence API\uff09\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u3067\u306f\u3001@Entity<\/code>\u3068@Repository<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Entity\n@Table(name = \"users\")\npublic class User {\n @Id\n @GeneratedValue(strategy = GenerationType.IDENTITY)\n private Long id;\n\n @Column(nullable = false, unique = true)\n private String email;\n\n \/\/ \u305d\u306e\u4ed6\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u30e1\u30bd\u30c3\u30c9\n}\n\n@Repository\npublic interface UserRepository extends JpaRepository<User, Long> {\n Optional<User> findByEmail(String email);\n}\n\n@Service\npublic class UserService {\n private final UserRepository userRepository;\n\n public UserService(UserRepository userRepository) {\n this.userRepository = userRepository;\n }\n\n @Transactional(readOnly = true)\n public Optional<User> findByEmail(String email) {\n return userRepository.findByEmail(email);\n }\n}<\/pre>\n\n\n\n\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n
\n- \u9069\u5207\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30af\u30a8\u30ea\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b<\/li>\n\n\n\n
- N+1\u554f\u984c\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066
@EntityGraph<\/code>\u3092\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n- \u8aad\u307f\u53d6\u308a\u5c02\u7528\u306e\u64cd\u4f5c\u306b\u306f
@Transactional(readOnly = true)<\/code>\u3092\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n- \u5927\u91cf\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306b\u306f\u30d0\u30c3\u30c1\u51e6\u7406\u3092\u6d3b\u7528\u3059\u308b<\/li>\n<\/ul>\n\n\n\n
3.3 \u4f9d\u5b58\u6027\u6ce8\u5165\u306e\u30d1\u30bf\u30fc\u30f3\uff1a@Autowired\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528<\/h2>\n\n\n\n
\u4f9d\u5b58\u6027\u6ce8\u5165\uff08DI\uff09\u306f Spring \u306e\u4e2d\u6838\u6a5f\u80fd\u306e1\u3064\u3067\u3059\u3002@Autowired<\/code>\u3092\u52b9\u679c\u7684\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u758e\u7d50\u5408\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n@Service\npublic class OrderService {\n private final UserService userService;\n private final ProductService productService;\n\n @Autowired \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u304c1\u3064\u306e\u5834\u5408\u3001@Autowired\u306f\u7701\u7565\u53ef\u80fd\n public OrderService(UserService userService, ProductService productService) {\n this.userService = userService;\n this.productService = productService;\n }\n\n \/\/ \u30b5\u30fc\u30d3\u30b9\u30e1\u30bd\u30c3\u30c9\n}<\/pre>\n\n\n\n\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n
\n- \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u6ce8\u5165\u3092\u512a\u5148\u3057\u3001\u30c6\u30b9\u30c8\u53ef\u80fd\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b<\/li>\n\n\n\n
- \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u4f9d\u5b58\u3057\u3001\u5b9f\u88c5\u306e\u67d4\u8edf\u6027\u3092\u78ba\u4fdd\u3059\u308b<\/li>\n\n\n\n
- \u5faa\u74b0\u4f9d\u5b58\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u6ce8\u610f\u6df1\u304f\u8a2d\u8a08\u3059\u308b<\/li>\n\n\n\n
- \u5fc5\u8981\u306b\u5fdc\u3058\u3066
@Qualifier<\/code>\u3084@Primary<\/code>\u3092\u4f7f\u7528\u3057\u3066\u3001\u6ce8\u5165\u3059\u308bBean\u3092\u660e\u78ba\u306b\u6307\u5b9a\u3059\u308b<\/li>\n<\/ul>\n\n\n\n3.4 \u8a2d\u5b9a\u7ba1\u7406\u306e\u7c21\u7d20\u5316\uff1a@Configuration\u3068\u30d7\u30ed\u30d1\u30c6\u30a3\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n
\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u3092\u52b9\u7387\u7684\u306b\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b\u3001@Configuration<\/code>\u3068\u5404\u7a2e\u30d7\u30ed\u30d1\u30c6\u30a3\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n@Configuration\n@ConfigurationProperties(prefix = \"app\")\npublic class AppConfig {\n private String name;\n private int maxConnections;\n\n \/\/ \u30b2\u30c3\u30bf\u30fc\u3068\u30bb\u30c3\u30bf\u30fc\n}\n\n@Service\npublic class DataService {\n @Value(\"${app.api.key}\")\n private String apiKey;\n\n \/\/ \u30b5\u30fc\u30d3\u30b9\u30e1\u30bd\u30c3\u30c9\n}<\/pre>\n\n\n\n\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n
\n- \u74b0\u5883\u5225\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08application-{profile}.properties\uff09\u3092\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n
- \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u308f\u308b\u8a2d\u5b9a\u306f\u74b0\u5883\u5909\u6570\u3084\u5916\u90e8\u306e\u5b89\u5168\u306a\u5834\u6240\u3067\u7ba1\u7406\u3059\u308b<\/li>\n\n\n\n
@ConfigurationProperties<\/code>\u3092\u4f7f\u7528\u3057\u3066\u3001\u578b\u5b89\u5168\u306a\u8a2d\u5b9a\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b<\/li>\n\n\n\n- \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u63d0\u4f9b\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5805\u7262\u6027\u3092\u9ad8\u3081\u308b<\/li>\n<\/ul>\n\n\n\n
\u3053\u308c\u3089\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001Spring Boot\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3057\u3001\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u52b9\u7387\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7528\u3044\u305f\u30b3\u30fc\u30c9\u6700\u9069\u5316\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
4. \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u6700\u9069\u5316\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a<\/h1>\n\n\n\n
Spring Boot\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u3092\u6700\u9069\u5316\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5177\u4f53\u7684\u306a\u4f8b\u3092\u901a\u3058\u3066\u305d\u306e\u65b9\u6cd5\u3092\u63a2\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
4.1 \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u308b\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u306e\u524a\u6e1b<\/h2>\n\n\n\n
Lombok\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\/\/ Before\npublic class User {\n private Long id;\n private String username;\n private String email;\n\n \/\/ Getters, setters, toString, equals, hashCode methods...\n}\n\n\/\/ After\n@Data\npublic class User {\n private Long id;\n private String username;\n private String email;\n}<\/pre>\n\n\n\n@Data<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u3001@Getter<\/code>, @Setter<\/code>, @ToString<\/code>, @EqualsAndHashCode<\/code>\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7d0450\u884c\u306e\u30b3\u30fc\u30c9\u304c3\u884c\u306b\u524a\u6e1b\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<\/i><\/span>\u6ce8\u610f\u70b9<\/div><\/div>\n\n- \u904e\u5270\u306a\u4f7f\u7528\u306f\u907f\u3051\u3001\u5fc5\u8981\u306a\u5834\u5408\u306e\u307f\u9069\u7528\u3059\u308b<\/li>\n\n\n\n
@EqualsAndHashCode<\/code>\u306e\u4f7f\u7528\u6642\u306f\u3001\u4e00\u610f\u6027\u3092\u6301\u3064\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u307f\u3092\u6307\u5b9a\u3059\u308b<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n\n\n\n4.2 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306b\u5f79\u7acb\u3064\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3<\/h2>\n\n\n\n
Spring Boot\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
@Service\npublic class UserService {\n @Cacheable(value = \"users\", key = \"#id\")\n public User getUserById(Long id) {\n \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n }\n\n @Async\n public CompletableFuture<List<User>> getAllUsersAsync() {\n \/\/ \u975e\u540c\u671f\u3067\u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n }\n\n @Transactional(readOnly = true)\n public List<User> getAllUsers() {\n \/\/ \u8aad\u307f\u53d6\u308a\u5c02\u7528\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3067\u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n }\n}<\/pre>\n\n\n\n\n@Cacheable<\/code>: \u983b\u7e41\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u308b\u30c7\u30fc\u30bf\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5fdc\u7b54\u6642\u9593\u3092\u6700\u592790%\u77ed\u7e2e\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n@Async<\/code>: \u6642\u9593\u306e\u304b\u304b\u308b\u51e6\u7406\u3092\u975e\u540c\u671f\u3067\u5b9f\u884c\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5fdc\u7b54\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/li>\n\n\n\n@Transactional(readOnly = true)<\/code>: \u8aad\u307f\u53d6\u308a\u5c02\u7528\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u6700\u9069\u5316\u3057\u3001\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30ed\u30c3\u30af\u3092\u56de\u907f\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n
\n- \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6709\u52b9\u671f\u9650\u3068\u30b5\u30a4\u30ba\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b<\/li>\n\n\n\n
- \u975e\u540c\u671f\u51e6\u7406\u306b\u306f\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b<\/li>\n\n\n\n
- \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u5883\u754c\u3092\u6700\u5c0f\u9650\u306b\u4fdd\u3064<\/li>\n<\/ul>\n\n\n\n
4.3 \u30ab\u30b9\u30bf\u30e0\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u4f5c\u6210\u3068\u6d3b\u7528<\/h2>\n\n\n\n
\u30ab\u30b9\u30bf\u30e0\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u6a2a\u65ad\u7684\u95a2\u5fc3\u4e8b\u3092\u5206\u96e2\u3057\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
@Retention(RetentionPolicy.RUNTIME)\n@Target(ElementType.METHOD)\npublic @interface LogExecutionTime {\n}\n\n@Aspect\n@Component\npublic class LoggingAspect {\n @Around(\"@annotation(LogExecutionTime)\")\n public Object logExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {\n long start = System.currentTimeMillis();\n Object proceed = joinPoint.proceed();\n long executionTime = System.currentTimeMillis() - start;\n System.out.println(joinPoint.getSignature() + \" executed in \" + executionTime + \"ms\");\n return proceed;\n }\n}<\/pre>\n\n\n\n\u3053\u306e\u30ab\u30b9\u30bf\u30e0\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3@LogExecutionTime<\/code>\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c\u6642\u9593\u3092\u7c21\u5358\u306b\u30ed\u30b0\u51fa\u529b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n@Service\npublic class UserService {\n @LogExecutionTime\n public User getUserById(Long id) {\n \/\/ \u30e6\u30fc\u30b6\u30fc\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n }\n}<\/pre>\n\n\n\n\u30ab\u30b9\u30bf\u30e0\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u6d3b\u7528\u306b\u3088\u308a\u3001\u30ed\u30b0\u51fa\u529b\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6e2c\u5b9a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30c1\u30a7\u30c3\u30af\u306a\u3069\u306e\u6a2a\u65ad\u7684\u95a2\u5fc3\u4e8b\u3092\u52b9\u679c\u7684\u306b\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u6280\u8853\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001Spring Boot\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6027\u80fd\u3068\u4fdd\u5b88\u6027\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001Spring Boot\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u65b0\u30c8\u30ec\u30f3\u30c9\u3068\u5c06\u6765\u306e\u5c55\u671b\u306b\u3064\u3044\u3066\u63a2\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
5. Spring Boot\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u6700\u65b0\u30c8\u30ec\u30f3\u30c9\u3068\u5c06\u6765\u5c55\u671b<\/h1>\n\n\n\n
Spring Boot\u306f\u5e38\u306b\u9032\u5316\u3092\u7d9a\u3051\u3066\u304a\u308a\u3001\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u3055\u307e\u3056\u307e\u306a\u6539\u5584\u3068\u65b0\u6a5f\u80fd\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u6700\u65b0\u306e\u30c8\u30ec\u30f3\u30c9\u3068\u5c06\u6765\u306e\u5c55\u671b\u306b\u3064\u3044\u3066\u63a2\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
5.1 Spring Boot 3.x\u3067\u5c0e\u5165\u3055\u308c\u305f\u65b0\u3057\u3044\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3<\/h2>\n\n\n\n
Spring Boot 3.x\u306f\u3001Java 17\u4ee5\u4e0a\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3001Spring Framework 6.x\u306b\u79fb\u884c\u3059\u308b\u306a\u3069\u3001\u5927\u304d\u306a\u5909\u66f4\u304c\u52a0\u3048\u3089\u308c\u307e\u3057\u305f\u3002\u65b0\u3057\u304f\u5c0e\u5165\u3055\u308c\u305f\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u3044\u304f\u3064\u304b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n
\n@RouterOperation<\/code>: \u95a2\u6570\u578b\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306eOpenAPI\u6587\u66f8\u5316\u3092\u7c21\u7d20\u5316\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n@RouterOperation(path = \"\/users\", produces = MediaType.APPLICATION_JSON_VALUE, beanClass = UserHandler.class, method = RequestMethod.GET)\npublic RouterFunction<ServerResponse> getUserRoute(UserHandler userHandler) {\n return route(GET(\"\/users\"), userHandler::getAllUsers);\n}<\/pre>\n\n\n\n\n@RepositoryRestController<\/code>: Spring Data REST\u306e\u30ab\u30b9\u30bf\u30e0\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n@RepositoryRestController\npublic class CustomUserController {\n @GetMapping(\"\/users\/custom\")\n public ResponseEntity<?> customUserEndpoint() {\n \/\/ \u30ab\u30b9\u30bf\u30e0\u30ed\u30b8\u30c3\u30af\n }\n}<\/pre>\n\n\n\n