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>

user-service/src/main/java/com/phonebill/user/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;
 
@@ -39,9 +40,18 @@ public class SwaggerConfig {
                                 .addServerVariable("port", new io.swagger.v3.oas.models.servers.ServerVariable()
                                         ._default("8081")
                                         .description("Server port"))))
-                .addSecurityItem(new SecurityRequirement().addList("Bearer Authentication"))
+                .addSecurityItem(new SecurityRequirement().addList("bearerAuth"))
                 .components(new Components()
-                        .addSecuritySchemes("Bearer Authentication", createAPIKeyScheme()));
+                        .addSecuritySchemes("bearerAuth", createAPIKeyScheme()));
+    }
+
+    @Bean
+    public GroupedOpenApi userApi() {
+        return GroupedOpenApi.builder()
+                .group("user")
+                .displayName("User Service")
+                .pathsToMatch("/api/v1/auth/**", "/api/v1/users/**")
+                .build();
     }
 
     private Info apiInfo() {

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

@@ -1,3 +1,9 @@
+server:
+  port: ${SERVER_PORT:8081}
+  # HTTP 헤더 크기 제한 설정
+  max-http-header-size: 64KB
+  max-http-request-header-size: 64KB
+
 spring:
   application:
     name: user-service
@@ -54,10 +60,6 @@ spring:
     redis:
       time-to-live: 1800000 # 30분
       cache-null-values: false
-      
-# 서버 설정
-server:
-  port: ${SERVER_PORT:8081}
 
 # CORS
 cors: