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Swagger Server URL이 http로 뜰 때

등록일: 2025. 7. 14. 0:41

1. ForwardedHeaderFilter 등록​

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.filter.ForwardedHeaderFilter;

@Configuration
public class WebConfig {

    @Bean
    public ForwardedHeaderFilter forwardedHeaderFilter() {
        return new ForwardedHeaderFilter();
    }
}

​

2. Nginx에서 X-Forwarded-* 헤더 전달 설정​

location / {
    proxy_pass http://localhost:8080;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
}

특히 X-Forwarded-Proto $scheme 이 중요함.
이걸 통해 Spring Boot가 원래 요청이 HTTP인지 HTTPS인지 알 수 있게 됨.
​

3. (선택) Swagger OpenAPI 강제 설정​

springdoc:
  swagger-ui:
    use-root-path: true
  default-produces-media-type: application/json
  default-consumes-media-type: application/json
  show-actuator: true
  api-docs:
    enabled: true
    path: /v3/api-docs
  swagger-ui:
    path: /swagger-ui.html
    urls:
      - name: Default
        url: /v3/api-docs
  # 이걸 명시적으로 지정해버리면 URL 고정 가능
  # 하지만 권장되는 방법은 아님
  server-url: [https://your-domain.com](https://your-domain.com)