[Chapter 02] extends WebMvcConfigurer 설정과 implements WebMvcConfigurationSupport 설정

[Irisation23]

실제 있었던 일

개발자 A가 Interceptor를 등록 하고자 아래의 설정 추가함

package com.douzon.smartlogistics.domain.member.interceptor;

@RequiredArgsConstructor
@Configuration
public class InterceptorConfig implements WebMvcConfigurer {

    private final SessionAuthInterceptor sessionAuthInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(sessionAuthInterceptor).addPathPatterns("/api/member/*");
    }
}

허나 위의 코드는 본인의 로컬에서는 기가 막히게 돌아가다가 develop으로 merge 하니 인터셉터 동작이 안됨.
원인으로 지목 됬던것은 인터셉터가 정상적으로 빈 등록되어 있지 않았다고 판단함.

• 혹시 또 다른 설정이 문제가 있는지 찾던 중 아래의 설정 클래스를 발견함.

@Configuration
public class SpringFoxConfig extends WebMvcConfigurationSupport {

    @Bean
    public WebMvcEndpointHandlerMapping webEndpointServletHandlerMapping(WebEndpointsSupplier webEndpointsSupplier
        , ServletEndpointsSupplier servletEndpointsSupplier
        , ControllerEndpointsSupplier controllerEndpointsSupplier
        , EndpointMediaTypes endpointMediaTypes
        , CorsEndpointProperties corsProperties
        , WebEndpointProperties webEndpointProperties
        , Environment environment) {

        List<ExposableEndpoint<?>> allEndpoints = new ArrayList<>();
        Collection<ExposableWebEndpoint> webEndpoints = webEndpointsSupplier.getEndpoints();
        allEndpoints.addAll(webEndpoints);
        allEndpoints.addAll(servletEndpointsSupplier.getEndpoints());
        allEndpoints.addAll(controllerEndpointsSupplier.getEndpoints());
        String basePath = webEndpointProperties.getBasePath();
        EndpointMapping endpointMapping = new EndpointMapping(basePath);
        boolean shouldRegisterLinksMapping = this.shouldRegisterLinksMapping(webEndpointProperties, environment,
            basePath);

        return new WebMvcEndpointHandlerMapping(endpointMapping, webEndpoints, endpointMediaTypes,
            corsProperties.toCorsConfiguration()
            , new EndpointLinksResolver(allEndpoints, basePath), shouldRegisterLinksMapping, null);
    }

    private boolean shouldRegisterLinksMapping(WebEndpointProperties webEndpointProperties, Environment environment,
        String basePath) {
        return webEndpointProperties.getDiscovery().isEnabled() && (StringUtils.hasText(basePath)
            || ManagementPortType.get(environment).equals(ManagementPortType.DIFFERENT));
    }

    @Bean
    public Docket api(TypeResolver typeResolver) {
        return new Docket(DocumentationType.OAS_30)
            .additionalModels(typeResolver.resolve(CommonResponse.class))
            .apiInfo(apiInfo())
            .select()
            .apis(RequestHandlerSelectors.any())
            .paths(regex("/api/.*"))
            .build();
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/swagger-ui/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/springfox-swagger-ui/");
        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/springfox-swagger-ui/");
    }

    public ApiInfo apiInfo() {
        return new ApiInfoBuilder()
            .title("Smart-Logistics-Project-Rest-Docs-Swagger")
            .description("스마트 물류 관리 백엔드 서버의 Rest Docs 입니다.")
            .version("0.1")
            .build();
    }
}

해당 클래스를 상속하는 WebMvcConfigurationSupport 설정은 정상적으로 동작되는 것을 확인함.

Q. 왜 WebMvcConfigurer를 구현한 클래스의 설정은 정상적으로 Interceptor를 빈 등록해 주지 않았을까?