[Feat] Swagger UI 세팅

build.gradle

@@ -25,6 +25,7 @@ dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	implementation 'mysql:mysql-connector-java:8.0.25'
+	implementation 'org.springdoc:springdoc-openapi-ui:1.7.0'
 	compileOnly 'org.projectlombok:lombok'
 	annotationProcessor 'org.projectlombok:lombok'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'

src/main/java/HeyPorori/transaction/config/SwaggerConfig.java

@@ -0,0 +1,18 @@
+package HeyPorori.transaction.config;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SwaggerConfig {
+    @Bean
+    public OpenAPI customOpenAPI() {
+        return new OpenAPI()
+                .info(new Info()
+                        .title("중고거래 서비스 API")
+                        .version("1.7.0")
+                        .description("[한이음 ICT 멘토링 공모전 프로젝트] 클라우드를 활용한 지역 기반 거래 플랫폼 - 중고거래 서비스"));
+    }
+}

src/main/java/HeyPorori/transaction/controller/TransactionController.java

@@ -1,9 +1,30 @@
 package HeyPorori.transaction.controller;
 
+import HeyPorori.transaction.config.BaseException;
+import HeyPorori.transaction.config.BaseResponse;
+import HeyPorori.transaction.service.TransactionService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+@RequiredArgsConstructor
+@Tag(name = "중고거래", description = "중고거래 관련 API 입니다.")
 @RestController
 @RequestMapping("/api/transactions")
 public class TransactionController {
+    private final TransactionService transactionService;
+
+    @Operation(summary = "Swagger UI 테스트용 메서드", description = "프로젝트 초기 Swagger UI 정상작동을 확인하기 위한 메서드입니다.")
+    @ApiResponse(responseCode = "200", description = "요청 성공", content = @Content(mediaType = "application/json", schema = @Schema(implementation = BaseResponse.class)))
+    @GetMapping("/test")
+    public BaseResponse<String> testSwagger() {
+        return new BaseResponse<>("테스트 성공");
+    }
 }