WebMvcConfigurer

WebMvcConfigurer 를 구현하면, WebMvc의 설정을 할 수 있다.

addViewControllers 를 통해 정적인 웹을 url에 매핑 시킬 수 있다.

@Configuration
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("home");
    }
}

addInterceptors 를 통해 오는 요청에 인터셉트를 할 수 있다.

@Configuration
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LocaleChangeInterceptor());
        registry.addInterceptor(new ThemeChangeInterceptor()).addPathPatterns("/**").excludePathPatterns("/admin/**");
        registry.addInterceptor(new SecurityInterceptor()).addPathPatterns("/secure/*");
    }
}

addArgumentResolvers를 통해 커스텀 어노테이션을 인자로 매핑시킬 수 있다.

public class HeaderVersionArgumentResolver
  implements HandlerMethodArgumentResolver {

    @Override
    public boolean supportsParameter(MethodParameter methodParameter) {
        return methodParameter.getParameterAnnotation(Version.class) != null;
    }

    @Override
    public Object resolveArgument(
      MethodParameter methodParameter, 
      ModelAndViewContainer modelAndViewContainer, 
      NativeWebRequest nativeWebRequest, 
      WebDataBinderFactory webDataBinderFactory) throws Exception {

        HttpServletRequest request 
          = (HttpServletRequest) nativeWebRequest.getNativeRequest();

        return request.getHeader("Version");
    }
}

@Configuration
public class WebConfig implements WebMvcConfigurer {

    //...

    @Override
    public void addArgumentResolvers(
      List<HandlerMethodArgumentResolver> argumentResolvers) {
        argumentResolvers.add(new HeaderVersionArgumentResolver());
    }
}