\uc548\ub155\ud558\uc138\uc694! \uc774 \uac15\uc88c\uc5d0\uc11c\ub294 \uc2a4\ud504\ub9c1 \ubd80\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud6a8\uc728\uc801\uc778 \ubc31\uc5d4\ub4dc \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uac1c\ubc1c\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc2a4\ud504\ub9c1 \ubd80\ud2b8\ub294 \ud604\ub300\uc801\uc778 \uc790\ubc14 \uae30\ubc18 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc27d\uac8c \ub9cc\ub4e4 \uc218 \uc788\ub294 \uac15\ub825\ud55c \ud504\ub808\uc784\uc6cc\ud06c\uc785\ub2c8\ub2e4. \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 \ud504\ub808\uc820\ud14c\uc774\uc158 \uacc4\uce35, \uc11c\ube44\uc2a4 \uacc4\uce35, \uadf8\ub9ac\uace0 \ud37c\uc2dc\uc2a4\ud134\uc2a4 \uacc4\uce35\uc744 \uad6c\ucd95\ud558\ub294 \ubc29\ubc95\uc744 \ub2e8\uacc4\ubcc4\ub85c \ubc30\uc6cc\ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc2a4\ud504\ub9c1 \ubd80\ud2b8\ub294 \uc2a4\ud504\ub9c1 \ud504\ub808\uc784\uc6cc\ud06c\ub97c \uae30\ubc18\uc73c\ub85c \ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ud504\ub808\uc784\uc6cc\ud06c\ub85c, \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc2e0\uc18d\ud558\uac8c \uac1c\ubc1c\ud558\ub294 \ub370 \ud544\uc694\ud55c \ub9ce\uc740 \uc124\uc815\uc744 \uac04\uc18c\ud654\ud558\uc5ec \uc81c\uacf5\ud569\ub2c8\ub2e4. \uac15\ub825\ud55c \uc758\uc874\uc131 \uad00\ub9ac, \uc784\ubca0\ub514\ub4dc \uc11c\ubc84, \uc790\ub3d9 \uad6c\uc131 \ub4f1 \ub2e4\uc591\ud55c \uae30\ub2a5\uc744 \ud1b5\ud574 \uac1c\ubc1c\uc790\ub294 \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc5d0 \ub354 \uc9d1\uc911\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc774\uc81c \uc2a4\ud504\ub9c1 \ubd80\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc2e4 \uc900\ube44\uac00 \ub418\uc168\uc2b5\ub2c8\ub2e4. \ud544\uc694\ud55c \ub3c4\uad6c\uc640 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc124\uce58\ud574\ubd05\uc2dc\ub2e4.<\/p>\n
\uc2a4\ud504\ub9c1 \ubd80\ud2b8\ub97c \uc0ac\uc6a9\ud558\ub824\uba74 JDK\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. JDK 11 \uc774\uc0c1 \ubc84\uc804\uc744 \uc124\uce58\ud574 \uc8fc\uc138\uc694.<\/p>\n
IntelliJ IDEA, Eclipse, \ud639\uc740 VSCode\uc640 \uac19\uc740 IDE\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uac15\uc88c\uc5d0\uc11c\ub294 IntelliJ IDEA\ub97c \uae30\uc900\uc73c\ub85c \uc9c4\ud589\ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
IntelliJ IDEA\ub97c \uc2e4\ud589\ud558\uc5ec \uc0c8\ub85c\uc6b4 \uc2a4\ud504\ub9c1 \ubd80\ud2b8 \ud504\ub85c\uc81d\ud2b8\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. \ud504\ub85c\uc81d\ud2b8 \uc0dd\uc131 \uc2dc \uc0ac\uc6a9\ud560 \ub09c\uc218\ub97c \uc120\ud0dd\ud558\uace0 \ub2e4\uc74c \uc120\ud0dd \uc0ac\ud56d\uc744 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n
Group: com.example\nArtifact: demo\nName: demo\nPackaging: Jar\nJava Version: 11<\/code><\/pre>\n3. \ud504\ub85c\uc81d\ud2b8 \uad6c\uc870<\/h2>\n
\uae30\ubcf8\uc801\uc73c\ub85c \uc2a4\ud504\ub9c1 \ubd80\ud2b8 \ud504\ub85c\uc81d\ud2b8\uc758 \uad6c\uc870\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
demo\n \u251c\u2500\u2500 src\n \u2502 \u251c\u2500\u2500 main\n \u2502 \u2502 \u251c\u2500\u2500 java\n \u2502 \u2502 \u2502 \u2514\u2500\u2500 com\n \u2502 \u2502 \u2502 \u2514\u2500\u2500 example\n \u2502 \u2502 \u2502 \u2514\u2500\u2500 demo\n \u2502 \u2502 \u2502 \u251c\u2500\u2500 DemoApplication.java\n \u2502 \u2502 \u2502 \u251c\u2500\u2500 controller\n \u2502 \u2502 \u2502 \u251c\u2500\u2500 service\n \u2502 \u2502 \u2502 \u2514\u2500\u2500 repository\n \u2502 \u2502 \u2514\u2500\u2500 resources\n \u2502 \u2502 \u251c\u2500\u2500 application.properties\n \u2502 \u2502 \u2514\u2500\u2500 static\n \u2502 \u2514\u2500\u2500 test\n \u2502 \u2514\u2500\u2500 java\n \u2502 \u2514\u2500\u2500 com\n \u2502 \u2514\u2500\u2500 example\n \u2502 \u2514\u2500\u2500 demo\n \u2514\u2500\u2500 pom.xml<\/code><\/pre>\n4. \ud504\ub808\uc820\ud14c\uc774\uc158 \uacc4\uce35 \ub9cc\ub4e4\uae30<\/h2>\n
\ud504\ub808\uc820\ud14c\uc774\uc158 \uacc4\uce35\uc740 \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc744 \ucc98\ub9ac\ud558\uace0 \uc751\ub2f5\uc744 \uc0dd\uc131\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc774 \uacc4\uce35\uc740 \uc77c\ubc18\uc801\uc73c\ub85c REST API \uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub97c \ud3ec\ud568\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
4.1 REST \ucee8\ud2b8\ub864\ub7ec \uc0dd\uc131<\/h3>\n
\uc81c\uc5b4\uae30\ub97c \uc0dd\uc131\ud558\uae30 \uc704\ud574 @RestController<\/code> \uc5b4\ub178\ud14c\uc774\uc158\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uc740 \uac04\ub2e8\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\npackage com.example.demo.controller;\n\nimport org.springframework.web.bind.annotation.GetMapping;\nimport org.springframework.web.bind.annotation.RestController;\n\n@RestController\npublic class HelloController {\n @GetMapping(\"\/hello\")\n public String hello() {\n return \"\uc548\ub155\ud558\uc138\uc694, \uc2a4\ud504\ub9c1 \ubd80\ud2b8!\";\n }\n}<\/code><\/pre>\n4.2 API \ubb38\uc11c\ud654<\/h3>\n
API \ubb38\uc11c\ud654\ub294 Swagger\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac04\ud3b8\ud558\uac8c \uc9c4\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub2e4\uc74c\uacfc \uac19\uc740 \uc758\uc874\uc131\uc744 pom.xml<\/code>\uc5d0 \ucd94\uac00\ud569\ub2c8\ub2e4.<\/p>\n<dependency>\n <groupId>io.springfox<\/groupId>\n <artifactId>springfox-boot-starter<\/artifactId>\n <version>3.0.0<\/version>\n<\/dependency><\/code><\/pre>\n5. \uc11c\ube44\uc2a4 \uacc4\uce35 \ub9cc\ub4e4\uae30<\/h2>\n
\uc11c\ube44\uc2a4 \uacc4\uce35\uc740 \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc744 \ucc98\ub9ac\ud558\uba70, \ud504\ub808\uc820\ud14c\uc774\uc158 \uacc4\uce35\uacfc \ud37c\uc2dc\uc2a4\ud134\uc2a4 \uacc4\uce35 \uac04\uc758 \uc911\uc7ac \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc774 \uacc4\uce35\uc740 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640\uc758 \uc0c1\ud638\uc791\uc6a9\uc744 \ucea1\uc290\ud654\ud569\ub2c8\ub2e4.<\/p>\n
5.1 \uc11c\ube44\uc2a4 \ud074\ub798\uc2a4 \uc0dd\uc131<\/h3>\n
\uc11c\ube44\uc2a4 \ud074\ub798\uc2a4\ub97c \ub9cc\ub4e4\uae30 \uc704\ud574 @Service<\/code> \uc5b4\ub178\ud14c\uc774\uc158\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc544\ub798\ub294 \uac04\ub2e8\ud55c \uc0ac\uc6a9\uc790 \uc11c\ube44\uc2a4 \ud074\ub798\uc2a4\uc758 \uc608\uc785\ub2c8\ub2e4.<\/p>\npackage com.example.demo.service;\n\nimport org.springframework.stereotype.Service;\n\n@Service\npublic class UserService {\n\n public String getUser() {\n return \"\uc0ac\uc6a9\uc790 \ub370\uc774\ud130\";\n }\n}<\/code><\/pre>\n5.2 \ud2b8\ub79c\uc7ad\uc158 \uad00\ub9ac<\/h3>\n
\uc2a4\ud504\ub9c1\uc758 \ud2b8\ub79c\uc7ad\uc158 \uad00\ub9ac\ub97c \ud65c\uc6a9\ud558\uc5ec \ub370\uc774\ud130 \uc77c\uad00\uc131\uc744 \uc720\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. @Transactional<\/code> \uc5b4\ub178\ud14c\uc774\uc158\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc11c\ube44\uc2a4 \uba54\uc18c\ub4dc\uc5d0 \ud2b8\ub79c\uc7ad\uc158\uc744 \uc801\uc6a9\ud569\ub2c8\ub2e4.<\/p>\nimport org.springframework.transaction.annotation.Transactional;\n\n@Transactional\npublic void saveUser(User user) {\n \/\/ Save user logic\n}<\/code><\/pre>\n6. \ud37c\uc2dc\uc2a4\ud134\uc2a4 \uacc4\uce35 \ub9cc\ub4e4\uae30<\/h2>\n
\ud37c\uc2dc\uc2a4\ud134\uc2a4 \uacc4\uce35\uc740 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640\uc758 \uc9c1\uc811\uc801\uc778 \uc0c1\ud638\uc791\uc6a9\uc744 \ub2f4\ub2f9\ud569\ub2c8\ub2e4. JPA\uc640 Spring Data JPA\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc27d\uac8c \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
6.1 \uc5d4\ud2f0\ud2f0 \ud074\ub798\uc2a4 \uc0dd\uc131<\/h3>\n
\uba3c\uc800, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud14c\uc774\ube14\uc5d0 \ub300\uc751\ud558\ub294 \uc5d4\ud2f0\ud2f0 \ud074\ub798\uc2a4\ub97c \uc0dd\uc131\ud574\uc57c \ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc0ac\uc6a9\uc790 \uc5d4\ud2f0\ud2f0\ub97c \uc0dd\uc131\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
package com.example.demo.model;\n\nimport javax.persistence.Entity;\nimport javax.persistence.GeneratedValue;\nimport javax.persistence.GenerationType;\nimport javax.persistence.Id;\n\n@Entity\npublic class User {\n @Id\n @GeneratedValue(strategy = GenerationType.IDENTITY)\n private Long id;\n private String name;\n\n \/\/ getters and setters\n}<\/code><\/pre>\n6.2 \ub9ac\ud3ec\uc9c0\ud1a0\ub9ac \uc778\ud130\ud398\uc774\uc2a4 \uc0dd\uc131<\/h3>\n
\ub9ac\ud3ec\uc9c0\ud1a0\ub9ac\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc791\uc5c5\uc744 \uc815\uc758\ud558\ub294 \uc778\ud130\ud398\uc774\uc2a4\uc785\ub2c8\ub2e4. Spring Data JPA\uc5d0\uc11c\ub294 JpaRepository<\/code>\ub97c \uc0c1\uc18d\ud558\uc5ec \uac04\ub2e8\ud558\uac8c \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\npackage com.example.demo.repository;\n\nimport com.example.demo.model.User;\nimport org.springframework.data.jpa.repository.JpaRepository;\n\npublic interface UserRepository extends JpaRepository<User, Long> {\n \/\/ \uc0ac\uc6a9\uc790 \uc870\ud68c \uba54\uc18c\ub4dc \uc815\uc758 \uac00\ub2a5\n}<\/code><\/pre>\n7. \uc694\uc57d \ubc0f \uacb0\ub860<\/h2>\n
\uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \uc2a4\ud504\ub9c1 \ubd80\ud2b8\ub97c \ud65c\uc6a9\ud558\uc5ec \ubc31\uc5d4\ub4dc \uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uac1c\ubc1c\ud558\ub294 \uae30\ubcf8\uc801\uc778 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc0b4\ud3b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \ud504\ub808\uc820\ud14c\uc774\uc158, \uc11c\ube44\uc2a4, \ud37c\uc2dc\uc2a4\ud134\uc2a4 \uacc4\uce35\uc744 \ub9cc\ub4dc\ub294 \ubc29\uc2dd\uacfc API \ubb38\uc11c\ud654, \ud2b8\ub79c\uc7ad\uc158 \uad00\ub9ac, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc0c1\ud638\uc791\uc6a9\uc758 \uae30\ubcf8 \uac1c\ub150\uc744 \uc775\ud614\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc2a4\ud504\ub9c1 \ubd80\ud2b8\ub97c \uae30\ubc18\uc73c\ub85c \ub354 \ub098\uc544\uac00 \ub2e4\uc591\ud55c \uae30\ub2a5\uacfc \uae30\uc220\uc744 \ud1b5\ud569\ud558\uc5ec \ubcf5\uc7a1\ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ub9cc\ub4e4\uc5b4 \ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \ubcf4\uc548 \uae30\ub2a5 \ucd94\uac00, \ubc30\uce58 \ucc98\ub9ac, \uba54\uc2dc\uc9d5 \uc2dc\uc2a4\ud15c \ud1b5\ud569 \ub4f1\uc744 \ud1b5\ud574 \ub354\uc6b1 \ud5a5\uc0c1\ub41c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uac1c\ubc1c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc55e\uc73c\ub85c\ub3c4 \uc5ec\ub7ec\ubd84\uc758 \uac1c\ubc1c \uc5ec\uc815\uc5d0 \ub9ce\uc740 \ub3c4\uc6c0\uc774 \ub418\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4!<\/p>\n