Custom RequestMappingHandlerMapping provoque une erreur avec Swagger

Question

J'ai créé un RequestMappingHandlerMapping personnalisé avec la dernière version de Spring comme suit afin que je puisse définir une annotation de version personnalisée.

WebConfiguration,

@Configuration 
@ConditionalOnClass({ ApiVersionedResource.class }) 
public class WebConfiguration { 

    @Bean 
    @Primary 
    public ContentNegotiationManager contentNegotiationManager() { 
     ContentNegotiationManagerFactoryBean contentNegotiationManagerFactoryBean = new ContentNegotiationManagerFactoryBean(); 
     Map<String, MediaType> mediaTypes = new HashMap<>(); 
     mediaTypes.put("json", MediaType.APPLICATION_JSON); 
     contentNegotiationManagerFactoryBean.addMediaTypes(mediaTypes); 
     contentNegotiationManagerFactoryBean.afterPropertiesSet(); 
     return contentNegotiationManagerFactoryBean.getObject(); 
    } 

    @Bean 
    public WebMvcRegistrationsAdapter webMvcRegistrationsHandlerMapping() { 
     return new WebMvcRegistrationsAdapter() { 
      @Override 
      public RequestMappingHandlerMapping getRequestMappingHandlerMapping() { 
       CustomRequestMappingHandlerMapping handlerMapping = new CustomRequestMappingHandlerMapping(); 
       handlerMapping.setOrder(0); 
       handlerMapping.setRemoveSemicolonContent(false); 
       handlerMapping.setContentNegotiationManager(contentNegotiationManager()); 
       return handlerMapping; 
      } 
     }; 
    } 
} 

CustomRequestMappingHandlerMapping,

public class CustomRequestMappingHandlerMapping extends RequestMappingHandlerMapping { 
    @Override 
    protected RequestCondition<?> getCustomTypeCondition(Class<?> handlerType) { 
     ApiVersionedResource typeAnnotation = AnnotationUtils.findAnnotation(handlerType, ApiVersionedResource.class); 
     return createCondition(typeAnnotation); 
    } 

    @Override 
    protected RequestCondition<?> getCustomMethodCondition(Method method) { 
     ApiVersionedResource methodAnnotation = AnnotationUtils.findAnnotation(method, ApiVersionedResource.class); 
     return createCondition(methodAnnotation); 
    } 

    @Override 
    protected boolean isHandler(Class<?> beanType) { 
     return super.isHandler(beanType) && (AnnotationUtils.findAnnotation(beanType, ApiVersionedResource.class) != null); 
    } 

    private RequestCondition<?> createCondition(ApiVersionedResource versionMapping) { 
     if (versionMapping != null) { 
      return new ApiVersionedResourceRequestCondition(versionMapping.media(), versionMapping.version()); 
     } 

     return null; 
    } 
} 

Cependant, cela provoque l'erreur suivante lors de la compilation et je ne sais pas ce qui est à l'origine.

2017-03-15 16:44:58.215 DEBUG 63518 --- [ restartedMain] r.h.v.CustomRequestMappingHandlerMapping : 6 request handler methods found on class com.test.web.rest.OrganizationResource: {public org.springframework.http.ResponseEntity com.test.web.rest.OrganizationResource.createOrganization(com.test.service.dto.OrgDetailsDTO) throws java.net.URISyntaxException={[/organizations],methods=[POST],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}, public org.springframework.http.ResponseEntity com.test.web.rest.OrganizationResource.updateOrganization(com.test.service.dto.OrgDetailsDTO) throws java.net.URISyntaxException={[/organizations],methods=[PUT],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}, public org.springframework.http.ResponseEntity com.test.web.rest.OrganizationResource.getAllOrganizations(org.springframework.data.domain.Pageable) throws java.net.URISyntaxException={[/organizations],methods=[GET],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}, public org.springframework.http.ResponseEntity com.test.web.rest.OrganizationResource.deleteOrganization(java.lang.Long)={[/organizations/{id}],methods=[DELETE],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}, public org.springframework.http.ResponseEntity com.test.web.rest.OrganizationResource.searchOrganizations(java.lang.String,org.springframework.data.domain.Pageable) throws java.net.URISyntaxException={[/search/organizations],methods=[GET],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}, public org.springframework.http.ResponseEntity com.test.web.rest.OrganizationResource.getOrganization(java.lang.Long)={[/organizations/{id}],methods=[GET],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}} 
2017-03-15 16:44:58.238 INFO 63518 --- [ restartedMain] r.h.v.CustomRequestMappingHandlerMapping : Mapped "{[/organizations],methods=[POST],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}" onto public org.springframework.http.ResponseEntity<com.test.service.dto.OrgDetailsDTO> com.test.web.rest.OrganizationResource.createOrganization(com.test.service.dto.OrgDetailsDTO) throws java.net.URISyntaxException 
2017-03-15 16:44:58.239 INFO 63518 --- [ restartedMain] r.h.v.CustomRequestMappingHandlerMapping : Mapped "{[/organizations],methods=[PUT],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}" onto public org.springframework.http.ResponseEntity<com.test.service.dto.OrgDetailsDTO> com.test.web.rest.OrganizationResource.updateOrganization(com.test.service.dto.OrgDetailsDTO) throws java.net.URISyntaxException 
2017-03-15 16:44:58.239 INFO 63518 --- [ restartedMain] r.h.v.CustomRequestMappingHandlerMapping : Mapped "{[/organizations],methods=[GET],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}" onto public org.springframework.http.ResponseEntity<java.util.List<com.test.service.dto.OrgDetailsDTO>> com.test.web.rest.OrganizationResource.getAllOrganizations(org.springframework.data.domain.Pageable) throws java.net.URISyntaxException 
2017-03-15 16:44:58.239 INFO 63518 --- [ restartedMain] r.h.v.CustomRequestMappingHandlerMapping : Mapped "{[/organizations/{id}],methods=[DELETE],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}" onto public org.springframework.http.ResponseEntity<java.lang.Void> com.test.web.rest.OrganizationResource.deleteOrganization(java.lang.Long) 
2017-03-15 16:44:58.240 INFO 63518 --- [ restartedMain] r.h.v.CustomRequestMappingHandlerMapping : Mapped "{[/search/organizations],methods=[GET],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}" onto public org.springframework.http.ResponseEntity<java.util.List<com.test.service.dto.OrgDetailsDTO>> com.test.web.rest.OrganizationResource.searchOrganizations(java.lang.String,org.springframework.data.domain.Pageable) throws java.net.URISyntaxException 
2017-03-15 16:44:58.240 INFO 63518 --- [ restartedMain] r.h.v.CustomRequestMappingHandlerMapping : Mapped "{[/organizations/{id}],methods=[GET],custom=[API Versions = {media=application/vnd.test.onboarding, versions=[]}]}" onto public org.springframework.http.ResponseEntity<com.test.service.dto.OrgDetailsDTO> com.test.web.rest.OrganizationResource.getOrganization(java.lang.Long) 
2017-03-15 16:44:58.314 WARN 63518 --- [ restartedMain] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'documentationPluginsBootstrapper' defined in URL [jar:file:/Users/kasunt/.m2/repository/io/springfox/springfox-spring-web/2.6.1/springfox-spring-web-2.6.1.jar!/springfox/documentation/spring/web/plugins/DocumentationPluginsBootstrapper.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webMvcRequestHandlerProvider' defined in URL [jar:file:/Users/kasunt/.m2/repository/io/springfox/springfox-spring-web/2.6.1/springfox-spring-web-2.6.1.jar!/springfox/documentation/spring/web/plugins/WebMvcRequestHandlerProvider.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'requestMappingHandlerMapping' is expected to be of type 'org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping' but was actually of type 'com.sun.proxy.$Proxy232' 

Spécialement ce droit à la fin,

*************************** 
APPLICATION FAILED TO START 
*************************** 

Description: 

The bean 'requestMappingHandlerMapping' could not be injected as a 'org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping' because it is a JDK dynamic proxy that implements: 


Action: 

Consider injecting the bean as one of its interfaces or forcing the use of CGLib-based proxies by setting proxyTargetClass=true on @EnableAsync and/or @EnableCaching. 

Answer 1

Il me semble avoir résolu le problème par refactoring WebConfiguration comme suit. Je ne suis pas entièrement sûr pourquoi instanciation CustomRequestMappingHandlerMapping comme une classe publique ne fonctionnait pas. Id être heureux d'écouter quiconque peut penser à une raison pourquoi.

@Configuration 
@ConditionalOnClass({ ApiVersionedResource.class }) 
public class WebConfiguration { 

    @Bean 
    public WebMvcRegistrationsAdapter webMvcRegistrationsHandlerMapping() { 
     return new WebMvcRegistrationsAdapter() { 
      @Override 
      public RequestMappingHandlerMapping getRequestMappingHandlerMapping() { 
       return new CustomRequestMappingHandlerMapping(); 
      } 
     }; 
    } 

    private final class CustomRequestMappingHandlerMapping extends RequestMappingHandlerMapping { 

     @Override 
     protected RequestCondition<?> getCustomTypeCondition(Class<?> handlerType) { 
      ApiVersionedResource typeAnnotation = AnnotationUtils.findAnnotation(handlerType, ApiVersionedResource.class); 
      return createCondition(typeAnnotation); 
     } 

     @Override 
     protected RequestCondition<?> getCustomMethodCondition(Method method) { 
      ApiVersionedResource methodAnnotation = AnnotationUtils.findAnnotation(method, ApiVersionedResource.class); 
      return createCondition(methodAnnotation); 
     } 

     @Override 
     protected boolean isHandler(Class<?> beanType) { 
      return super.isHandler(beanType) && (AnnotationUtils.findAnnotation(beanType, ApiVersionedResource.class) != null); 
     } 

     private RequestCondition<?> createCondition(ApiVersionedResource versionMapping) { 
      if (versionMapping != null) { 
       return new ApiVersionedResourceRequestCondition(versionMapping.media(), versionMapping.version()); 
      } 

      return null; 
     } 
    } 
}