>> pathPrefixes = configurer.getPathPrefixes();
if (pathPrefixes != null) {
mapping.setPathPrefixes(pathPrefixes);
}
return mapping;
}
/**
* Protected method for plugging in a custom subclass of
* {@link RequestMappingHandlerMapping}.
* @since 4.0
*/
protected RequestMappingHandlerMapping createRequestMappingHandlerMapping() {
return new RequestMappingHandlerMapping();
}
/**
* Provide access to the shared handler interceptors used to configure
* {@link HandlerMapping} instances with.
* This method cannot be overridden; use {@link #addInterceptors} instead.
*/
protected final Object[] getInterceptors() {
if (this.interceptors == null) {
InterceptorRegistry registry = new InterceptorRegistry();
addInterceptors(registry);
registry.addInterceptor(new ConversionServiceExposingInterceptor(mvcConversionService()));
registry.addInterceptor(new ResourceUrlProviderExposingInterceptor(mvcResourceUrlProvider()));
this.interceptors = registry.getInterceptors();
}
return this.interceptors.toArray();
}
/**
* Override this method to add Spring MVC interceptors for
* pre- and post-processing of controller invocation.
* @see InterceptorRegistry
*/
protected void addInterceptors(InterceptorRegistry registry) {
}
/**
* Callback for building the {@link PathMatchConfigurer}.
* Delegates to {@link #configurePathMatch}.
* @since 4.1
*/
protected PathMatchConfigurer getPathMatchConfigurer() {
if (this.pathMatchConfigurer == null) {
this.pathMatchConfigurer = new PathMatchConfigurer();
configurePathMatch(this.pathMatchConfigurer);
}
return this.pathMatchConfigurer;
}
/**
* Override this method to configure path matching options.
* @since 4.0.3
* @see PathMatchConfigurer
*/
protected void configurePathMatch(PathMatchConfigurer configurer) {
}
/**
* Return a global {@link PathMatcher} instance for path matching
* patterns in {@link HandlerMapping HandlerMappings}.
* This instance can be configured using the {@link PathMatchConfigurer}
* in {@link #configurePathMatch(PathMatchConfigurer)}.
* @since 4.1
*/
@Bean
public PathMatcher mvcPathMatcher() {
PathMatcher pathMatcher = getPathMatchConfigurer().getPathMatcher();
return (pathMatcher != null ? pathMatcher : new AntPathMatcher());
}
/**
* Return a global {@link UrlPathHelper} instance for path matching
* patterns in {@link HandlerMapping HandlerMappings}.
* This instance can be configured using the {@link PathMatchConfigurer}
* in {@link #configurePathMatch(PathMatchConfigurer)}.
* @since 4.1
*/
@Bean
public UrlPathHelper mvcUrlPathHelper() {
UrlPathHelper pathHelper = getPathMatchConfigurer().getUrlPathHelper();
return (pathHelper != null ? pathHelper : new UrlPathHelper());
}
/**
* Return a {@link ContentNegotiationManager} instance to use to determine
* requested {@linkplain MediaType media types} in a given request.
*/
@Bean
public ContentNegotiationManager mvcContentNegotiationManager() {
if (this.contentNegotiationManager == null) {
ContentNegotiationConfigurer configurer = new ContentNegotiationConfigurer(this.servletContext);
configurer.mediaTypes(getDefaultMediaTypes());
configureContentNegotiation(configurer);
this.contentNegotiationManager = configurer.buildContentNegotiationManager();
}
return this.contentNegotiationManager;
}
protected Map getDefaultMediaTypes() {
Map map = new HashMap<>(4);
if (romePresent) {
map.put("atom", MediaType.APPLICATION_ATOM_XML);
map.put("rss", MediaType.APPLICATION_RSS_XML);
}
if (jaxb2Present || jackson2XmlPresent) {
map.put("xml", MediaType.APPLICATION_XML);
}
if (jackson2Present || gsonPresent || jsonbPresent) {
map.put("json", MediaType.APPLICATION_JSON);
}
if (jackson2SmilePresent) {
map.put("smile", MediaType.valueOf("application/x-jackson-smile"));
}
if (jackson2CborPresent) {
map.put("cbor", MediaType.valueOf("application/cbor"));
}
return map;
}
/**
* Override this method to configure content negotiation.
* @see DefaultServletHandlerConfigurer
*/
protected void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
}
/**
* Return a handler mapping ordered at 1 to map URL paths directly to
* view names. To configure view controllers, override
* {@link #addViewControllers}.
*/
@Bean
@Nullable
public HandlerMapping viewControllerHandlerMapping() {
ViewControllerRegistry registry = new ViewControllerRegistry(this.applicationContext);
addViewControllers(registry);
AbstractHandlerMapping handlerMapping = registry.buildHandlerMapping();
if (handlerMapping == null) {
return null;
}
handlerMapping.setPathMatcher(mvcPathMatcher());
handlerMapping.setUrlPathHelper(mvcUrlPathHelper());
handlerMapping.setInterceptors(getInterceptors());
handlerMapping.setCorsConfigurations(getCorsConfigurations());
return handlerMapping;
}
/**
* Override this method to add view controllers.
* @see ViewControllerRegistry
*/
protected void addViewControllers(ViewControllerRegistry registry) {
}
/**
* Return a {@link BeanNameUrlHandlerMapping} ordered at 2 to map URL
* paths to controller bean names.
*/
@Bean
public BeanNameUrlHandlerMapping beanNameHandlerMapping() {
BeanNameUrlHandlerMapping mapping = new BeanNameUrlHandlerMapping();
mapping.setOrder(2);
mapping.setInterceptors(getInterceptors());
mapping.setCorsConfigurations(getCorsConfigurations());
return mapping;
}
/**
* Return a {@link RouterFunctionMapping} ordered at 3 to map
* {@linkplain org.springframework.web.servlet.function.RouterFunction router functions}.
* Consider overriding one of these other more fine-grained methods:
*
* - {@link #addInterceptors} for adding handler interceptors.
*
- {@link #addCorsMappings} to configure cross origin requests processing.
*
- {@link #configureMessageConverters} for adding custom message converters.
*
* @since 5.2
*/
@Bean
public RouterFunctionMapping routerFunctionMapping() {
RouterFunctionMapping mapping = new RouterFunctionMapping();
mapping.setOrder(3);
mapping.setInterceptors(getInterceptors());
mapping.setCorsConfigurations(getCorsConfigurations());
mapping.setMessageConverters(getMessageConverters());
return mapping;
}
/**
* Return a handler mapping ordered at Integer.MAX_VALUE-1 with mapped
* resource handlers. To configure resource handling, override
* {@link #addResourceHandlers}.
*/
@Bean
@Nullable
public HandlerMapping resourceHandlerMapping() {
Assert.state(this.applicationContext != null, "No ApplicationContext set");
Assert.state(this.servletContext != null, "No ServletContext set");
ResourceHandlerRegistry registry = new ResourceHandlerRegistry(this.applicationContext,
this.servletContext, mvcContentNegotiationManager(), mvcUrlPathHelper());
addResourceHandlers(registry);
AbstractHandlerMapping handlerMapping = registry.getHandlerMapping();
if (handlerMapping == null) {
return null;
}
handlerMapping.setPathMatcher(mvcPathMatcher());
handlerMapping.setUrlPathHelper(mvcUrlPathHelper());
handlerMapping.setInterceptors(getInterceptors());
handlerMapping.setCorsConfigurations(getCorsConfigurations());
return handlerMapping;
}
/**
* Override this method to add resource handlers for serving static resources.
* @see ResourceHandlerRegistry
*/
protected void addResourceHandlers(ResourceHandlerRegistry registry) {
}
/**
* A {@link ResourceUrlProvider} bean for use with the MVC dispatcher.
* @since 4.1
*/
@Bean
public ResourceUrlProvider mvcResourceUrlProvider() {
ResourceUrlProvider urlProvider = new ResourceUrlProvider();
UrlPathHelper pathHelper = getPathMatchConfigurer().getUrlPathHelper();
if (pathHelper != null) {
urlProvider.setUrlPathHelper(pathHelper);
}
PathMatcher pathMatcher = getPathMatchConfigurer().getPathMatcher();
if (pathMatcher != null) {
urlProvider.setPathMatcher(pathMatcher);
}
return urlProvider;
}
/**
* Return a handler mapping ordered at Integer.MAX_VALUE with a mapped
* default servlet handler. To configure "default" Servlet handling,
* override {@link #configureDefaultServletHandling}.
*/
@Bean
@Nullable
public HandlerMapping defaultServletHandlerMapping() {
Assert.state(this.servletContext != null, "No ServletContext set");
DefaultServletHandlerConfigurer configurer = new DefaultServletHandlerConfigurer(this.servletContext);
configureDefaultServletHandling(configurer);
return configurer.buildHandlerMapping();
}
/**
* Override this method to configure "default" Servlet handling.
* @see DefaultServletHandlerConfigurer
*/
protected void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
}
/**
* Returns a {@link RequestMappingHandlerAdapter} for processing requests
* through annotated controller methods. Consider overriding one of these
* other more fine-grained methods:
*
* - {@link #addArgumentResolvers} for adding custom argument resolvers.
*
- {@link #addReturnValueHandlers} for adding custom return value handlers.
*
- {@link #configureMessageConverters} for adding custom message converters.
*
*/
@Bean
public RequestMappingHandlerAdapter requestMappingHandlerAdapter() {
RequestMappingHandlerAdapter adapter = createRequestMappingHandlerAdapter();
adapter.setContentNegotiationManager(mvcContentNegotiationManager());
adapter.setMessageConverters(getMessageConverters());
adapter.setWebBindingInitializer(getConfigurableWebBindingInitializer());
adapter.setCustomArgumentResolvers(getArgumentResolvers());
adapter.setCustomReturnValueHandlers(getReturnValueHandlers());
if (jackson2Present) {
adapter.setRequestBodyAdvice(Collections.singletonList(new JsonViewRequestBodyAdvice()));
adapter.setResponseBodyAdvice(Collections.singletonList(new JsonViewResponseBodyAdvice()));
}
AsyncSupportConfigurer configurer = new AsyncSupportConfigurer();
configureAsyncSupport(configurer);
if (configurer.getTaskExecutor() != null) {
adapter.setTaskExecutor(configurer.getTaskExecutor());
}
if (configurer.getTimeout() != null) {
adapter.setAsyncRequestTimeout(configurer.getTimeout());
}
adapter.setCallableInterceptors(configurer.getCallableInterceptors());
adapter.setDeferredResultInterceptors(configurer.getDeferredResultInterceptors());
return adapter;
}
/**
* Protected method for plugging in a custom subclass of
* {@link RequestMappingHandlerAdapter}.
* @since 4.3
*/
protected RequestMappingHandlerAdapter createRequestMappingHandlerAdapter() {
return new RequestMappingHandlerAdapter();
}
/**
* Returns a {@link HandlerFunctionAdapter} for processing requests through
* {@linkplain org.springframework.web.servlet.function.HandlerFunction handler functions}.
* @since 5.2
*/
@Bean
public HandlerFunctionAdapter handlerFunctionAdapter() {
return new HandlerFunctionAdapter();
}
/**
* Return the {@link ConfigurableWebBindingInitializer} to use for
* initializing all {@link WebDataBinder} instances.
*/
protected ConfigurableWebBindingInitializer getConfigurableWebBindingInitializer() {
ConfigurableWebBindingInitializer initializer = new ConfigurableWebBindingInitializer();
initializer.setConversionService(mvcConversionService());
initializer.setValidator(mvcValidator());
MessageCodesResolver messageCodesResolver = getMessageCodesResolver();
if (messageCodesResolver != null) {
initializer.setMessageCodesResolver(messageCodesResolver);
}
return initializer;
}
/**
* Override this method to provide a custom {@link MessageCodesResolver}.
*/
@Nullable
protected MessageCodesResolver getMessageCodesResolver() {
return null;
}
/**
* Override this method to configure asynchronous request processing options.
* @see AsyncSupportConfigurer
*/
protected void configureAsyncSupport(AsyncSupportConfigurer configurer) {
}
/**
* Return a {@link FormattingConversionService} for use with annotated controllers.
* See {@link #addFormatters} as an alternative to overriding this method.
*/
@Bean
public FormattingConversionService mvcConversionService() {
FormattingConversionService conversionService = new DefaultFormattingConversionService();
addFormatters(conversionService);
return conversionService;
}
/**
* Override this method to add custom {@link Converter} and/or {@link Formatter}
* delegates to the common {@link FormattingConversionService}.
* @see #mvcConversionService()
*/
protected void addFormatters(FormatterRegistry registry) {
}
/**
* Return a global {@link Validator} instance for example for validating
* {@code @ModelAttribute} and {@code @RequestBody} method arguments.
* Delegates to {@link #getValidator()} first and if that returns {@code null}
* checks the classpath for the presence of a JSR-303 implementations
* before creating a {@code OptionalValidatorFactoryBean}.If a JSR-303
* implementation is not available, a no-op {@link Validator} is returned.
*/
@Bean
public Validator mvcValidator() {
Validator validator = getValidator();
if (validator == null) {
if (ClassUtils.isPresent("javax.validation.Validator", getClass().getClassLoader())) {
Class> clazz;
try {
String className = "org.springframework.validation.beanvalidation.OptionalValidatorFactoryBean";
clazz = ClassUtils.forName(className, WebMvcConfigurationSupport.class.getClassLoader());
}
catch (ClassNotFoundException | LinkageError ex) {
throw new BeanInitializationException("Failed to resolve default validator class", ex);
}
validator = (Validator) BeanUtils.instantiateClass(clazz);
}
else {
validator = new NoOpValidator();
}
}
return validator;
}
/**
* Override this method to provide a custom {@link Validator}.
*/
@Nullable
protected Validator getValidator() {
return null;
}
/**
* Provide access to the shared custom argument resolvers used by the
* {@link RequestMappingHandlerAdapter} and the {@link ExceptionHandlerExceptionResolver}.
*
This method cannot be overridden; use {@link #addArgumentResolvers} instead.
* @since 4.3
*/
protected final List getArgumentResolvers() {
if (this.argumentResolvers == null) {
this.argumentResolvers = new ArrayList<>();
addArgumentResolvers(this.argumentResolvers);
}
return this.argumentResolvers;
}
/**
* Add custom {@link HandlerMethodArgumentResolver HandlerMethodArgumentResolvers}
* to use in addition to the ones registered by default.
* Custom argument resolvers are invoked before built-in resolvers except for
* those that rely on the presence of annotations (e.g. {@code @RequestParameter},
* {@code @PathVariable}, etc). The latter can be customized by configuring the
* {@link RequestMappingHandlerAdapter} directly.
* @param argumentResolvers the list of custom converters (initially an empty list)
*/
protected void addArgumentResolvers(List argumentResolvers) {
}
/**
* Provide access to the shared return value handlers used by the
* {@link RequestMappingHandlerAdapter} and the {@link ExceptionHandlerExceptionResolver}.
* This method cannot be overridden; use {@link #addReturnValueHandlers} instead.
* @since 4.3
*/
protected final List getReturnValueHandlers() {
if (this.returnValueHandlers == null) {
this.returnValueHandlers = new ArrayList<>();
addReturnValueHandlers(this.returnValueHandlers);
}
return this.returnValueHandlers;
}
/**
* Add custom {@link HandlerMethodReturnValueHandler HandlerMethodReturnValueHandlers}
* in addition to the ones registered by default.
* Custom return value handlers are invoked before built-in ones except for
* those that rely on the presence of annotations (e.g. {@code @ResponseBody},
* {@code @ModelAttribute}, etc). The latter can be customized by configuring the
* {@link RequestMappingHandlerAdapter} directly.
* @param returnValueHandlers the list of custom handlers (initially an empty list)
*/
protected void addReturnValueHandlers(List returnValueHandlers) {
}
/**
* Provides access to the shared {@link HttpMessageConverter HttpMessageConverters}
* used by the {@link RequestMappingHandlerAdapter} and the
* {@link ExceptionHandlerExceptionResolver}.
* This method cannot be overridden; use {@link #configureMessageConverters} instead.
* Also see {@link #addDefaultHttpMessageConverters} for adding default message converters.
*/
protected final List> getMessageConverters() {
if (this.messageConverters == null) {
this.messageConverters = new ArrayList<>();
configureMessageConverters(this.messageConverters);
if (this.messageConverters.isEmpty()) {
addDefaultHttpMessageConverters(this.messageConverters);
}
extendMessageConverters(this.messageConverters);
}
return this.messageConverters;
}
/**
* Override this method to add custom {@link HttpMessageConverter HttpMessageConverters}
* to use with the {@link RequestMappingHandlerAdapter} and the
* {@link ExceptionHandlerExceptionResolver}.
* Adding converters to the list turns off the default converters that would
* otherwise be registered by default. Also see {@link #addDefaultHttpMessageConverters}
* for adding default message converters.
* @param converters a list to add message converters to (initially an empty list)
*/
protected void configureMessageConverters(List> converters) {
}
/**
* Override this method to extend or modify the list of converters after it has
* been configured. This may be useful for example to allow default converters
* to be registered and then insert a custom converter through this method.
* @param converters the list of configured converters to extend
* @since 4.1.3
*/
protected void extendMessageConverters(List> converters) {
}
/**
* Adds a set of default HttpMessageConverter instances to the given list.
* Subclasses can call this method from {@link #configureMessageConverters}.
* @param messageConverters the list to add the default message converters to
*/
protected final void addDefaultHttpMessageConverters(List> messageConverters) {
StringHttpMessageConverter stringHttpMessageConverter = new StringHttpMessageConverter();
stringHttpMessageConverter.setWriteAcceptCharset(false); // see SPR-7316
messageConverters.add(new ByteArrayHttpMessageConverter());
messageConverters.add(stringHttpMessageConverter);
messageConverters.add(new ResourceHttpMessageConverter());
messageConverters.add(new ResourceRegionHttpMessageConverter());
try {
messageConverters.add(new SourceHttpMessageConverter<>());
}
catch (Throwable ex) {
// Ignore when no TransformerFactory implementation is available...
}
messageConverters.add(new AllEncompassingFormHttpMessageConverter());
if (romePresent) {
messageConverters.add(new AtomFeedHttpMessageConverter());
messageConverters.add(new RssChannelHttpMessageConverter());
}
if (jackson2XmlPresent) {
Jackson2ObjectMapperBuilder builder = Jackson2ObjectMapperBuilder.xml();
if (this.applicationContext != null) {
builder.applicationContext(this.applicationContext);
}
messageConverters.add(new MappingJackson2XmlHttpMessageConverter(builder.build()));
}
else if (jaxb2Present) {
messageConverters.add(new Jaxb2RootElementHttpMessageConverter());
}
if (jackson2Present) {
Jackson2ObjectMapperBuilder builder = Jackson2ObjectMapperBuilder.json();
if (this.applicationContext != null) {
builder.applicationContext(this.applicationContext);
}
messageConverters.add(new MappingJackson2HttpMessageConverter(builder.build()));
}
else if (gsonPresent) {
messageConverters.add(new GsonHttpMessageConverter());
}
else if (jsonbPresent) {
messageConverters.add(new JsonbHttpMessageConverter());
}
if (jackson2SmilePresent) {
Jackson2ObjectMapperBuilder builder = Jackson2ObjectMapperBuilder.smile();
if (this.applicationContext != null) {
builder.applicationContext(this.applicationContext);
}
messageConverters.add(new MappingJackson2SmileHttpMessageConverter(builder.build()));
}
if (jackson2CborPresent) {
Jackson2ObjectMapperBuilder builder = Jackson2ObjectMapperBuilder.cbor();
if (this.applicationContext != null) {
builder.applicationContext(this.applicationContext);
}
messageConverters.add(new MappingJackson2CborHttpMessageConverter(builder.build()));
}
}
/**
* Return an instance of {@link CompositeUriComponentsContributor} for use with
* {@link org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder}.
* @since 4.0
*/
@Bean
public CompositeUriComponentsContributor mvcUriComponentsContributor() {
return new CompositeUriComponentsContributor(
requestMappingHandlerAdapter().getArgumentResolvers(), mvcConversionService());
}
/**
* Returns a {@link HttpRequestHandlerAdapter} for processing requests
* with {@link HttpRequestHandler HttpRequestHandlers}.
*/
@Bean
public HttpRequestHandlerAdapter httpRequestHandlerAdapter() {
return new HttpRequestHandlerAdapter();
}
/**
* Returns a {@link SimpleControllerHandlerAdapter} for processing requests
* with interface-based controllers.
*/
@Bean
public SimpleControllerHandlerAdapter simpleControllerHandlerAdapter() {
return new SimpleControllerHandlerAdapter();
}
/**
* Returns a {@link HandlerExceptionResolverComposite} containing a list of exception
* resolvers obtained either through {@link #configureHandlerExceptionResolvers} or
* through {@link #addDefaultHandlerExceptionResolvers}.
* Note: This method cannot be made final due to CGLIB constraints.
* Rather than overriding it, consider overriding {@link #configureHandlerExceptionResolvers}
* which allows for providing a list of resolvers.
*/
@Bean
public HandlerExceptionResolver handlerExceptionResolver() {
List exceptionResolvers = new ArrayList<>();
configureHandlerExceptionResolvers(exceptionResolvers);
if (exceptionResolvers.isEmpty()) {
addDefaultHandlerExceptionResolvers(exceptionResolvers);
}
extendHandlerExceptionResolvers(exceptionResolvers);
HandlerExceptionResolverComposite composite = new HandlerExceptionResolverComposite();
composite.setOrder(0);
composite.setExceptionResolvers(exceptionResolvers);
return composite;
}
/**
* Override this method to configure the list of
* {@link HandlerExceptionResolver HandlerExceptionResolvers} to use.
* Adding resolvers to the list turns off the default resolvers that would otherwise
* be registered by default. Also see {@link #addDefaultHandlerExceptionResolvers}
* that can be used to add the default exception resolvers.
* @param exceptionResolvers a list to add exception resolvers to (initially an empty list)
*/
protected void configureHandlerExceptionResolvers(List exceptionResolvers) {
}
/**
* Override this method to extend or modify the list of
* {@link HandlerExceptionResolver HandlerExceptionResolvers} after it has been configured.
* This may be useful for example to allow default resolvers to be registered
* and then insert a custom one through this method.
* @param exceptionResolvers the list of configured resolvers to extend.
* @since 4.3
*/
protected void extendHandlerExceptionResolvers(List exceptionResolvers) {
}
/**
* A method available to subclasses for adding default
* {@link HandlerExceptionResolver HandlerExceptionResolvers}.
* Adds the following exception resolvers:
*
* - {@link ExceptionHandlerExceptionResolver} for handling exceptions through
* {@link org.springframework.web.bind.annotation.ExceptionHandler} methods.
*
- {@link ResponseStatusExceptionResolver} for exceptions annotated with
* {@link org.springframework.web.bind.annotation.ResponseStatus}.
*
- {@link DefaultHandlerExceptionResolver} for resolving known Spring exception types
*
*/
protected final void addDefaultHandlerExceptionResolvers(List exceptionResolvers) {
ExceptionHandlerExceptionResolver exceptionHandlerResolver = createExceptionHandlerExceptionResolver();
exceptionHandlerResolver.setContentNegotiationManager(mvcContentNegotiationManager());
exceptionHandlerResolver.setMessageConverters(getMessageConverters());
exceptionHandlerResolver.setCustomArgumentResolvers(getArgumentResolvers());
exceptionHandlerResolver.setCustomReturnValueHandlers(getReturnValueHandlers());
if (jackson2Present) {
exceptionHandlerResolver.setResponseBodyAdvice(
Collections.singletonList(new JsonViewResponseBodyAdvice()));
}
if (this.applicationContext != null) {
exceptionHandlerResolver.setApplicationContext(this.applicationContext);
}
exceptionHandlerResolver.afterPropertiesSet();
exceptionResolvers.add(exceptionHandlerResolver);
ResponseStatusExceptionResolver responseStatusResolver = new ResponseStatusExceptionResolver();
responseStatusResolver.setMessageSource(this.applicationContext);
exceptionResolvers.add(responseStatusResolver);
exceptionResolvers.add(new DefaultHandlerExceptionResolver());
}
/**
* Protected method for plugging in a custom subclass of
* {@link ExceptionHandlerExceptionResolver}.
* @since 4.3
*/
protected ExceptionHandlerExceptionResolver createExceptionHandlerExceptionResolver() {
return new ExceptionHandlerExceptionResolver();
}
/**
* Register a {@link ViewResolverComposite} that contains a chain of view resolvers
* to use for view resolution.
* By default this resolver is ordered at 0 unless content negotiation view
* resolution is used in which case the order is raised to
* {@link org.springframework.core.Ordered#HIGHEST_PRECEDENCE
* Ordered.HIGHEST_PRECEDENCE}.
* If no other resolvers are configured,
* {@link ViewResolverComposite#resolveViewName(String, Locale)} returns null in order
* to allow other potential {@link ViewResolver} beans to resolve views.
* @since 4.1
*/
@Bean
public ViewResolver mvcViewResolver() {
ViewResolverRegistry registry = new ViewResolverRegistry(
mvcContentNegotiationManager(), this.applicationContext);
configureViewResolvers(registry);
if (registry.getViewResolvers().isEmpty() && this.applicationContext != null) {
String[] names = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
this.applicationContext, ViewResolver.class, true, false);
if (names.length == 1) {
registry.getViewResolvers().add(new InternalResourceViewResolver());
}
}
ViewResolverComposite composite = new ViewResolverComposite();
composite.setOrder(registry.getOrder());
composite.setViewResolvers(registry.getViewResolvers());
if (this.applicationContext != null) {
composite.setApplicationContext(this.applicationContext);
}
if (this.servletContext != null) {
composite.setServletContext(this.servletContext);
}
return composite;
}
/**
* Override this method to configure view resolution.
* @see ViewResolverRegistry
*/
protected void configureViewResolvers(ViewResolverRegistry registry) {
}
/**
* Return the registered {@link CorsConfiguration} objects,
* keyed by path pattern.
* @since 4.2
*/
protected final Map getCorsConfigurations() {
if (this.corsConfigurations == null) {
CorsRegistry registry = new CorsRegistry();
addCorsMappings(registry);
this.corsConfigurations = registry.getCorsConfigurations();
}
return this.corsConfigurations;
}
/**
* Override this method to configure cross origin requests processing.
* @since 4.2
* @see CorsRegistry
*/
protected void addCorsMappings(CorsRegistry registry) {
}
@Bean
@Lazy
public HandlerMappingIntrospector mvcHandlerMappingIntrospector() {
return new HandlerMappingIntrospector();
}
private static final class NoOpValidator implements Validator {
@Override
public boolean supports(Class> clazz) {
return false;
}
@Override
public void validate(@Nullable Object target, Errors errors) {
}
}
}