API Gateway Swagger 통합 문제 분석 완료

주요 문제점 식별:
- Gateway 라우팅 경로 불일치 (product-service: /products/**, bill-service: /api/v1/bills/**)
- OpenAPI 서버 정보와 실제 Gateway 경로 매핑 누락
- Swagger UI에서 "Try it out" 기능 미작동

다음 단계: 라우팅 경로 통일화 및 OpenAPI 서버 정보 수정 예정

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

product-service/src/main/java/com/unicorn/phonebill/product/config/SwaggerConfig.java

@@ -7,6 +7,7 @@ import io.swagger.v3.oas.models.info.Info;
 import io.swagger.v3.oas.models.security.SecurityRequirement;
 import io.swagger.v3.oas.models.security.SecurityScheme;
 import io.swagger.v3.oas.models.servers.Server;
+import org.springdoc.core.models.GroupedOpenApi;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -44,6 +45,15 @@ public class SwaggerConfig {
                         .addSecuritySchemes("bearerAuth", createAPIKeyScheme()));
     }
 
+    @Bean
+    public GroupedOpenApi productApi() {
+        return GroupedOpenApi.builder()
+                .group("product")
+                .displayName("Product Service")
+                .pathsToMatch("/products/**", "/product/**")
+                .build();
+    }
+
     private Info apiInfo() {
         return new Info()
                 .title("Product Service API")

product-service/src/main/resources/application.yml

@@ -54,6 +54,9 @@ spring:
 # Server 개발 설정
 server:
   port: ${SERVER_PORT:8083}
+  # HTTP 헤더 크기 제한 설정
+  max-http-header-size: 64KB
+  max-http-request-header-size: 64KB
   error:
     include-stacktrace: always
     include-message: always
@@ -117,7 +120,7 @@ management:
 springdoc:
   api-docs:
     enabled: true
-    path: /api-docs
+    path: /v3/api-docs
   swagger-ui:
     enabled: true
     path: /swagger-ui.html