org.springframework.web.servlet.config.annotation

Interface WebMvcConfigurer

All Known Implementing Classes:

WebMvcConfigurerAdapter

public interface WebMvcConfigurer

Defines callback methods to customize the Java-based configuration for Spring MVC enabled via @EnableWebMvc.

@EnableWebMvc-annotated configuration classes may implement this interface to be called back and given a chance to customize the default configuration.

Since:

3.1

Author:

Rossen Stoyanchev, Keith Donald, David Syer

Method Summary

Modifier and Type	Method and Description
default void	addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers) Add resolvers to support custom controller method argument types.
default void	addCorsMappings(CorsRegistry registry) Configure "global" cross-origin request processing.
default void	addFormatters(FormatterRegistry registry) Add Converters and Formatters in addition to the ones registered by default.
default void	addInterceptors(InterceptorRegistry registry) Add Spring MVC lifecycle interceptors for pre- and post-processing of controller method invocations and resource handler requests.
default void	addResourceHandlers(ResourceHandlerRegistry registry) Add handlers to serve static resources such as images, js, and, css files from specific locations under web application root, the classpath, and others.
default void	addReturnValueHandlers(List<HandlerMethodReturnValueHandler> handlers) Add handlers to support custom controller method return value types.
default void	addViewControllers(ViewControllerRegistry registry) Configure simple automated controllers pre-configured with the response status code and/or a view to render the response body.
default void	configureAsyncSupport(AsyncSupportConfigurer configurer) Configure asynchronous request handling options.
default void	configureContentNegotiation(ContentNegotiationConfigurer configurer) Configure content negotiation options.
default void	configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) Configure a handler to delegate unhandled requests by forwarding to the Servlet container's "default" servlet.
default void	configureHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) Configure exception resolvers.
default void	configureMessageConverters(List<HttpMessageConverter<?>> converters) Configure the HttpMessageConverters for reading from the request body and for writing to the response body.
default void	configurePathMatch(PathMatchConfigurer configurer) Help with configuring HandlerMapping path matching options such as whether to use parsed PathPatterns or String pattern matching with PathMatcher, whether to match trailing slashes, and more.
default void	configureViewResolvers(ViewResolverRegistry registry) Configure view resolvers to translate String-based view names returned from controllers into concrete View implementations to perform rendering with.
default void	extendHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) Extending or modify the list of exception resolvers configured by default.
default void	extendMessageConverters(List<HttpMessageConverter<?>> converters) Extend or modify the list of converters after it has been, either configured or initialized with a default list.
default MessageCodesResolver	getMessageCodesResolver() Provide a custom MessageCodesResolver for building message codes from data binding and validation error codes.
default Validator	getValidator() Provide a custom Validator instead of the one created by default.

Method Detail

configurePathMatch

default void configurePathMatch(PathMatchConfigurer configurer)

Help with configuring HandlerMapping path matching options such as whether to use parsed PathPatterns or String pattern matching with PathMatcher, whether to match trailing slashes, and more.

Since:

4.0.3

See Also:

PathMatchConfigurer

configureContentNegotiation

default void configureContentNegotiation(ContentNegotiationConfigurer configurer)

Configure content negotiation options.

configureAsyncSupport

default void configureAsyncSupport(AsyncSupportConfigurer configurer)

Configure asynchronous request handling options.

configureDefaultServletHandling

default void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer)

Configure a handler to delegate unhandled requests by forwarding to the Servlet container's "default" servlet. A common use case for this is when the DispatcherServlet is mapped to "/" thus overriding the Servlet container's default handling of static resources.

addFormatters

default void addFormatters(FormatterRegistry registry)

Add Converters and Formatters in addition to the ones registered by default.

addInterceptors

default void addInterceptors(InterceptorRegistry registry)

Add Spring MVC lifecycle interceptors for pre- and post-processing of controller method invocations and resource handler requests. Interceptors can be registered to apply to all requests or be limited to a subset of URL patterns.

addResourceHandlers

default void addResourceHandlers(ResourceHandlerRegistry registry)

Add handlers to serve static resources such as images, js, and, css files from specific locations under web application root, the classpath, and others.

See Also:

ResourceHandlerRegistry

addCorsMappings

default void addCorsMappings(CorsRegistry registry)

Configure "global" cross-origin request processing. The configured CORS mappings apply to annotated controllers, functional endpoints, and static resources.

Annotated controllers can further declare more fine-grained config via @CrossOrigin. In such cases "global" CORS configuration declared here is combined with local CORS configuration defined on a controller method.

Since:

4.2

See Also:

CorsRegistry, CorsConfiguration.combine(CorsConfiguration)

addViewControllers

default void addViewControllers(ViewControllerRegistry registry)

Configure simple automated controllers pre-configured with the response status code and/or a view to render the response body. This is useful in cases where there is no need for custom controller logic -- e.g. render a home page, perform simple site URL redirects, return a 404 status with HTML content, a 204 with no content, and more.

See Also:

ViewControllerRegistry

configureViewResolvers

default void configureViewResolvers(ViewResolverRegistry registry)

Configure view resolvers to translate String-based view names returned from controllers into concrete View implementations to perform rendering with.

Since:

4.1

addArgumentResolvers

default void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers)

Add resolvers to support custom controller method argument types.

This does not override the built-in support for resolving handler method arguments. To customize the built-in support for argument resolution, configure RequestMappingHandlerAdapter directly.

Parameters:

resolvers - initially an empty list

addReturnValueHandlers

default void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> handlers)

Add handlers to support custom controller method return value types.

Using this option does not override the built-in support for handling return values. To customize the built-in support for handling return values, configure RequestMappingHandlerAdapter directly.

Parameters:

handlers - initially an empty list

configureMessageConverters

default void configureMessageConverters(List<HttpMessageConverter<?>> converters)

Configure the HttpMessageConverters for reading from the request body and for writing to the response body.

By default, all built-in converters are configured as long as the corresponding 3rd party libraries such Jackson JSON, JAXB2, and others are present on the classpath.

Note use of this method turns off default converter registration. Alternatively, use extendMessageConverters(java.util.List) to modify that default list of converters.

Parameters:

converters - initially an empty list of converters

extendMessageConverters

default void extendMessageConverters(List<HttpMessageConverter<?>> converters)

Extend or modify the list of converters after it has been, either configured or initialized with a default list.

Note that the order of converter registration is important. Especially in cases where clients accept MediaType.ALL the converters configured earlier will be preferred.

Parameters:

converters - the list of configured converters to be extended

Since:

4.1.3

configureHandlerExceptionResolvers

default void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers)

Configure exception resolvers.

The given list starts out empty. If it is left empty, the framework configures a default set of resolvers, see WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(List, org.springframework.web.accept.ContentNegotiationManager). Or if any exception resolvers are added to the list, then the application effectively takes over and must provide, fully initialized, exception resolvers.

Alternatively you can use extendHandlerExceptionResolvers(List) which allows you to extend or modify the list of exception resolvers configured by default.

Parameters:

resolvers - initially an empty list

See Also:

extendHandlerExceptionResolvers(List), WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(List, org.springframework.web.accept.ContentNegotiationManager)

extendHandlerExceptionResolvers

default void extendHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers)

Extending or modify the list of exception resolvers configured by default. This can be useful for inserting a custom exception resolver without interfering with default ones.

Parameters:

resolvers - the list of configured resolvers to extend

Since:

4.3

See Also:

WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(List, org.springframework.web.accept.ContentNegotiationManager)

getValidator

@Nullable
default Validator getValidator()

Provide a custom Validator instead of the one created by default. The default implementation, assuming JSR-303 is on the classpath, is: OptionalValidatorFactoryBean. Leave the return value as null to keep the default.

getMessageCodesResolver

@Nullable
default MessageCodesResolver getMessageCodesResolver()

Provide a custom MessageCodesResolver for building message codes from data binding and validation error codes. Leave the return value as null to keep the default.