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org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.autoconfigure.web.servlet;
import java.time.Duration;
import java.util.List;
import java.util.ListIterator;
import java.util.Locale;
import java.util.Map;
import java.util.function.Consumer;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.AutoConfigureOrder;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.boot.autoconfigure.task.TaskExecutionAutoConfiguration;
import org.springframework.boot.autoconfigure.template.TemplateAvailabilityProviders;
import org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration;
import org.springframework.boot.autoconfigure.validation.ValidatorAdapter;
import org.springframework.boot.autoconfigure.web.ConditionalOnEnabledResourceChain;
import org.springframework.boot.autoconfigure.web.WebProperties;
import org.springframework.boot.autoconfigure.web.WebProperties.Resources;
import org.springframework.boot.autoconfigure.web.WebProperties.Resources.Chain.Strategy;
import org.springframework.boot.autoconfigure.web.format.DateTimeFormatters;
import org.springframework.boot.autoconfigure.web.format.WebConversionService;
import org.springframework.boot.autoconfigure.web.servlet.WebMvcProperties.Format;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.convert.ApplicationConversionService;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.boot.web.servlet.filter.OrderedFormContentFilter;
import org.springframework.boot.web.servlet.filter.OrderedHiddenHttpMethodFilter;
import org.springframework.boot.web.servlet.filter.OrderedRequestContextFilter;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ResourceLoaderAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.Primary;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.task.AsyncTaskExecutor;
import org.springframework.format.FormatterRegistry;
import org.springframework.format.support.FormattingConversionService;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.util.ClassUtils;
import org.springframework.validation.DefaultMessageCodesResolver;
import org.springframework.validation.MessageCodesResolver;
import org.springframework.validation.Validator;
import org.springframework.web.HttpMediaTypeNotAcceptableException;
import org.springframework.web.accept.ContentNegotiationManager;
import org.springframework.web.accept.ContentNegotiationStrategy;
import org.springframework.web.bind.support.ConfigurableWebBindingInitializer;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextListener;
import org.springframework.web.context.support.ServletContextResource;
import org.springframework.web.filter.FormContentFilter;
import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.filter.RequestContextFilter;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.FlashMapManager;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.ThemeResolver;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.AsyncSupportConfigurer;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
import org.springframework.web.servlet.config.annotation.ResourceChainRegistration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver;
import org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver;
import org.springframework.web.servlet.i18n.FixedLocaleResolver;
import org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import org.springframework.web.servlet.resource.EncodedResourceResolver;
import org.springframework.web.servlet.resource.ResourceResolver;
import org.springframework.web.servlet.resource.ResourceUrlProvider;
import org.springframework.web.servlet.resource.VersionResourceResolver;
import org.springframework.web.servlet.view.BeanNameViewResolver;
import org.springframework.web.servlet.view.ContentNegotiatingViewResolver;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.util.UrlPathHelper;
import org.springframework.web.util.pattern.PathPatternParser;
/**
* {@link EnableAutoConfiguration Auto-configuration} for {@link EnableWebMvc Web MVC}.
*
* @author Phillip Webb
* @author Dave Syer
* @author Andy Wilkinson
* @author Sébastien Deleuze
* @author Eddú Meléndez
* @author Stephane Nicoll
* @author Kristine Jetzke
* @author Bruce Brouwer
* @author Artsiom Yudovin
* @author Scott Frederick
* @since 2.0.0
*/
@Configuration(proxyBeanMethods = false)
@ConditionalOnWebApplication(type = Type.SERVLET)
@ConditionalOnClass({ Servlet.class, DispatcherServlet.class, WebMvcConfigurer.class })
@ConditionalOnMissingBean(WebMvcConfigurationSupport.class)
@AutoConfigureOrder(Ordered.HIGHEST_PRECEDENCE + 10)
@AutoConfigureAfter({ DispatcherServletAutoConfiguration.class, TaskExecutionAutoConfiguration.class,
ValidationAutoConfiguration.class })
public class WebMvcAutoConfiguration {
/**
* The default Spring MVC view prefix.
*/
public static final String DEFAULT_PREFIX = "";
/**
* The default Spring MVC view suffix.
*/
public static final String DEFAULT_SUFFIX = "";
private static final String SERVLET_LOCATION = "/";
@Bean
@ConditionalOnMissingBean(HiddenHttpMethodFilter.class)
@ConditionalOnProperty(prefix = "spring.mvc.hiddenmethod.filter", name = "enabled", matchIfMissing = false)
public OrderedHiddenHttpMethodFilter hiddenHttpMethodFilter() {
return new OrderedHiddenHttpMethodFilter();
}
@Bean
@ConditionalOnMissingBean(FormContentFilter.class)
@ConditionalOnProperty(prefix = "spring.mvc.formcontent.filter", name = "enabled", matchIfMissing = true)
public OrderedFormContentFilter formContentFilter() {
return new OrderedFormContentFilter();
}
// Defined as a nested config to ensure WebMvcConfigurer is not read when not
// on the classpath
@SuppressWarnings("deprecation")
@Configuration(proxyBeanMethods = false)
@Import(EnableWebMvcConfiguration.class)
@EnableConfigurationProperties({ WebMvcProperties.class,
org.springframework.boot.autoconfigure.web.ResourceProperties.class, WebProperties.class })
@Order(0)
public static class WebMvcAutoConfigurationAdapter implements WebMvcConfigurer {
private final WebMvcProperties mvcProperties;
private final ListableBeanFactory beanFactory;
private final ObjectProvider messageConvertersProvider;
private final ObjectProvider dispatcherServletPath;
private final ObjectProvider> servletRegistrations;
final ResourceHandlerRegistrationCustomizer resourceHandlerRegistrationCustomizer;
public WebMvcAutoConfigurationAdapter(WebProperties webProperties, WebMvcProperties mvcProperties,
ListableBeanFactory beanFactory, ObjectProvider messageConvertersProvider,
ObjectProvider resourceHandlerRegistrationCustomizerProvider,
ObjectProvider dispatcherServletPath,
ObjectProvider> servletRegistrations) {
this.mvcProperties = mvcProperties;
this.beanFactory = beanFactory;
this.messageConvertersProvider = messageConvertersProvider;
this.resourceHandlerRegistrationCustomizer = resourceHandlerRegistrationCustomizerProvider.getIfAvailable();
this.dispatcherServletPath = dispatcherServletPath;
this.servletRegistrations = servletRegistrations;
this.mvcProperties.checkConfiguration();
}
@Override
public void configureMessageConverters(List> converters) {
this.messageConvertersProvider
.ifAvailable((customConverters) -> converters.addAll(customConverters.getConverters()));
}
@Override
public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
if (this.beanFactory.containsBean(TaskExecutionAutoConfiguration.APPLICATION_TASK_EXECUTOR_BEAN_NAME)) {
Object taskExecutor = this.beanFactory
.getBean(TaskExecutionAutoConfiguration.APPLICATION_TASK_EXECUTOR_BEAN_NAME);
if (taskExecutor instanceof AsyncTaskExecutor) {
configurer.setTaskExecutor(((AsyncTaskExecutor) taskExecutor));
}
}
Duration timeout = this.mvcProperties.getAsync().getRequestTimeout();
if (timeout != null) {
configurer.setDefaultTimeout(timeout.toMillis());
}
}
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
if (this.mvcProperties.getPathmatch()
.getMatchingStrategy() == WebMvcProperties.MatchingStrategy.PATH_PATTERN_PARSER) {
configurer.setPatternParser(new PathPatternParser());
}
configurer.setUseSuffixPatternMatch(this.mvcProperties.getPathmatch().isUseSuffixPattern());
configurer.setUseRegisteredSuffixPatternMatch(
this.mvcProperties.getPathmatch().isUseRegisteredSuffixPattern());
this.dispatcherServletPath.ifAvailable((dispatcherPath) -> {
String servletUrlMapping = dispatcherPath.getServletUrlMapping();
if (servletUrlMapping.equals("/") && singleDispatcherServlet()) {
UrlPathHelper urlPathHelper = new UrlPathHelper();
urlPathHelper.setAlwaysUseFullPath(true);
configurer.setUrlPathHelper(urlPathHelper);
}
});
}
private boolean singleDispatcherServlet() {
return this.servletRegistrations.stream().map(ServletRegistrationBean::getServlet)
.filter(DispatcherServlet.class::isInstance).count() == 1;
}
@Override
public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
WebMvcProperties.Contentnegotiation contentnegotiation = this.mvcProperties.getContentnegotiation();
configurer.favorPathExtension(contentnegotiation.isFavorPathExtension());
configurer.favorParameter(contentnegotiation.isFavorParameter());
if (contentnegotiation.getParameterName() != null) {
configurer.parameterName(contentnegotiation.getParameterName());
}
Map mediaTypes = this.mvcProperties.getContentnegotiation().getMediaTypes();
mediaTypes.forEach(configurer::mediaType);
}
@Bean
@ConditionalOnMissingBean
public InternalResourceViewResolver defaultViewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix(this.mvcProperties.getView().getPrefix());
resolver.setSuffix(this.mvcProperties.getView().getSuffix());
return resolver;
}
@Bean
@ConditionalOnBean(View.class)
@ConditionalOnMissingBean
public BeanNameViewResolver beanNameViewResolver() {
BeanNameViewResolver resolver = new BeanNameViewResolver();
resolver.setOrder(Ordered.LOWEST_PRECEDENCE - 10);
return resolver;
}
@Bean
@ConditionalOnBean(ViewResolver.class)
@ConditionalOnMissingBean(name = "viewResolver", value = ContentNegotiatingViewResolver.class)
public ContentNegotiatingViewResolver viewResolver(BeanFactory beanFactory) {
ContentNegotiatingViewResolver resolver = new ContentNegotiatingViewResolver();
resolver.setContentNegotiationManager(beanFactory.getBean(ContentNegotiationManager.class));
// ContentNegotiatingViewResolver uses all the other view resolvers to locate
// a view so it should have a high precedence
resolver.setOrder(Ordered.HIGHEST_PRECEDENCE);
return resolver;
}
@Override
public MessageCodesResolver getMessageCodesResolver() {
if (this.mvcProperties.getMessageCodesResolverFormat() != null) {
DefaultMessageCodesResolver resolver = new DefaultMessageCodesResolver();
resolver.setMessageCodeFormatter(this.mvcProperties.getMessageCodesResolverFormat());
return resolver;
}
return null;
}
@Override
public void addFormatters(FormatterRegistry registry) {
ApplicationConversionService.addBeans(registry, this.beanFactory);
}
@Bean
@ConditionalOnMissingBean({ RequestContextListener.class, RequestContextFilter.class })
@ConditionalOnMissingFilterBean(RequestContextFilter.class)
public static RequestContextFilter requestContextFilter() {
return new OrderedRequestContextFilter();
}
}
/**
* Configuration equivalent to {@code @EnableWebMvc}.
*/
@Configuration(proxyBeanMethods = false)
@EnableConfigurationProperties(WebProperties.class)
public static class EnableWebMvcConfiguration extends DelegatingWebMvcConfiguration implements ResourceLoaderAware {
private static final Log logger = LogFactory.getLog(WebMvcConfigurer.class);
private final Resources resourceProperties;
private final WebMvcProperties mvcProperties;
private final WebProperties webProperties;
private final ListableBeanFactory beanFactory;
private final WebMvcRegistrations mvcRegistrations;
private final ResourceHandlerRegistrationCustomizer resourceHandlerRegistrationCustomizer;
private ResourceLoader resourceLoader;
@SuppressWarnings("deprecation")
public EnableWebMvcConfiguration(
org.springframework.boot.autoconfigure.web.ResourceProperties resourceProperties,
WebMvcProperties mvcProperties, WebProperties webProperties,
ObjectProvider mvcRegistrationsProvider,
ObjectProvider resourceHandlerRegistrationCustomizerProvider,
ListableBeanFactory beanFactory) {
this.resourceProperties = resourceProperties.hasBeenCustomized() ? resourceProperties
: webProperties.getResources();
this.mvcProperties = mvcProperties;
this.webProperties = webProperties;
this.mvcRegistrations = mvcRegistrationsProvider.getIfUnique();
this.resourceHandlerRegistrationCustomizer = resourceHandlerRegistrationCustomizerProvider.getIfAvailable();
this.beanFactory = beanFactory;
}
@Bean
@Override
public RequestMappingHandlerAdapter requestMappingHandlerAdapter(
@Qualifier("mvcContentNegotiationManager") ContentNegotiationManager contentNegotiationManager,
@Qualifier("mvcConversionService") FormattingConversionService conversionService,
@Qualifier("mvcValidator") Validator validator) {
RequestMappingHandlerAdapter adapter = super.requestMappingHandlerAdapter(contentNegotiationManager,
conversionService, validator);
adapter.setIgnoreDefaultModelOnRedirect(
this.mvcProperties == null || this.mvcProperties.isIgnoreDefaultModelOnRedirect());
return adapter;
}
@Override
protected RequestMappingHandlerAdapter createRequestMappingHandlerAdapter() {
if (this.mvcRegistrations != null) {
RequestMappingHandlerAdapter adapter = this.mvcRegistrations.getRequestMappingHandlerAdapter();
if (adapter != null) {
return adapter;
}
}
return super.createRequestMappingHandlerAdapter();
}
@Bean
@Primary
@Override
public RequestMappingHandlerMapping requestMappingHandlerMapping(
@Qualifier("mvcContentNegotiationManager") ContentNegotiationManager contentNegotiationManager,
@Qualifier("mvcConversionService") FormattingConversionService conversionService,
@Qualifier("mvcResourceUrlProvider") ResourceUrlProvider resourceUrlProvider) {
// Must be @Primary for MvcUriComponentsBuilder to work
return super.requestMappingHandlerMapping(contentNegotiationManager, conversionService,
resourceUrlProvider);
}
@Override
protected void addResourceHandlers(ResourceHandlerRegistry registry) {
super.addResourceHandlers(registry);
if (!this.resourceProperties.isAddMappings()) {
logger.debug("Default resource handling disabled");
return;
}
ServletContext servletContext = getServletContext();
addResourceHandler(registry, "/webjars/**", "classpath:/META-INF/resources/webjars/");
addResourceHandler(registry, this.mvcProperties.getStaticPathPattern(), (registration) -> {
registration.addResourceLocations(this.resourceProperties.getStaticLocations());
if (servletContext != null) {
registration.addResourceLocations(new ServletContextResource(servletContext, SERVLET_LOCATION));
}
});
}
private void addResourceHandler(ResourceHandlerRegistry registry, String pattern, String... locations) {
addResourceHandler(registry, pattern, (registration) -> registration.addResourceLocations(locations));
}
private void addResourceHandler(ResourceHandlerRegistry registry, String pattern,
Consumer customizer) {
if (registry.hasMappingForPattern(pattern)) {
return;
}
ResourceHandlerRegistration registration = registry.addResourceHandler(pattern);
customizer.accept(registration);
registration.setCachePeriod(getSeconds(this.resourceProperties.getCache().getPeriod()));
registration.setCacheControl(this.resourceProperties.getCache().getCachecontrol().toHttpCacheControl());
customizeResourceHandlerRegistration(registration);
}
private Integer getSeconds(Duration cachePeriod) {
return (cachePeriod != null) ? (int) cachePeriod.getSeconds() : null;
}
private void customizeResourceHandlerRegistration(ResourceHandlerRegistration registration) {
if (this.resourceHandlerRegistrationCustomizer != null) {
this.resourceHandlerRegistrationCustomizer.customize(registration);
}
}
@Bean
public WelcomePageHandlerMapping welcomePageHandlerMapping(ApplicationContext applicationContext,
FormattingConversionService mvcConversionService, ResourceUrlProvider mvcResourceUrlProvider) {
WelcomePageHandlerMapping welcomePageHandlerMapping = new WelcomePageHandlerMapping(
new TemplateAvailabilityProviders(applicationContext), applicationContext, getWelcomePage(),
this.mvcProperties.getStaticPathPattern());
welcomePageHandlerMapping.setInterceptors(getInterceptors(mvcConversionService, mvcResourceUrlProvider));
welcomePageHandlerMapping.setCorsConfigurations(getCorsConfigurations());
return welcomePageHandlerMapping;
}
@Override
@Bean
@ConditionalOnMissingBean(name = DispatcherServlet.LOCALE_RESOLVER_BEAN_NAME)
@SuppressWarnings("deprecation")
public LocaleResolver localeResolver() {
if (this.webProperties.getLocaleResolver() == WebProperties.LocaleResolver.FIXED) {
return new FixedLocaleResolver(this.webProperties.getLocale());
}
if (this.mvcProperties.getLocaleResolver() == WebMvcProperties.LocaleResolver.FIXED) {
return new FixedLocaleResolver(this.mvcProperties.getLocale());
}
AcceptHeaderLocaleResolver localeResolver = new AcceptHeaderLocaleResolver();
Locale locale = (this.webProperties.getLocale() != null) ? this.webProperties.getLocale()
: this.mvcProperties.getLocale();
localeResolver.setDefaultLocale(locale);
return localeResolver;
}
@Override
@Bean
@ConditionalOnMissingBean(name = DispatcherServlet.THEME_RESOLVER_BEAN_NAME)
public ThemeResolver themeResolver() {
return super.themeResolver();
}
@Override
@Bean
@ConditionalOnMissingBean(name = DispatcherServlet.FLASH_MAP_MANAGER_BEAN_NAME)
public FlashMapManager flashMapManager() {
return super.flashMapManager();
}
private Resource getWelcomePage() {
for (String location : this.resourceProperties.getStaticLocations()) {
Resource indexHtml = getIndexHtml(location);
if (indexHtml != null) {
return indexHtml;
}
}
ServletContext servletContext = getServletContext();
if (servletContext != null) {
return getIndexHtml(new ServletContextResource(servletContext, SERVLET_LOCATION));
}
return null;
}
private Resource getIndexHtml(String location) {
return getIndexHtml(this.resourceLoader.getResource(location));
}
private Resource getIndexHtml(Resource location) {
try {
Resource resource = location.createRelative("index.html");
if (resource.exists() && (resource.getURL() != null)) {
return resource;
}
}
catch (Exception ex) {
}
return null;
}
@Bean
@Override
public FormattingConversionService mvcConversionService() {
Format format = this.mvcProperties.getFormat();
WebConversionService conversionService = new WebConversionService(new DateTimeFormatters()
.dateFormat(format.getDate()).timeFormat(format.getTime()).dateTimeFormat(format.getDateTime()));
addFormatters(conversionService);
return conversionService;
}
@Bean
@Override
public Validator mvcValidator() {
if (!ClassUtils.isPresent("javax.validation.Validator", getClass().getClassLoader())) {
return super.mvcValidator();
}
return ValidatorAdapter.get(getApplicationContext(), getValidator());
}
@Override
protected RequestMappingHandlerMapping createRequestMappingHandlerMapping() {
if (this.mvcRegistrations != null) {
RequestMappingHandlerMapping mapping = this.mvcRegistrations.getRequestMappingHandlerMapping();
if (mapping != null) {
return mapping;
}
}
return super.createRequestMappingHandlerMapping();
}
@Override
protected ConfigurableWebBindingInitializer getConfigurableWebBindingInitializer(
FormattingConversionService mvcConversionService, Validator mvcValidator) {
try {
return this.beanFactory.getBean(ConfigurableWebBindingInitializer.class);
}
catch (NoSuchBeanDefinitionException ex) {
return super.getConfigurableWebBindingInitializer(mvcConversionService, mvcValidator);
}
}
@Override
protected ExceptionHandlerExceptionResolver createExceptionHandlerExceptionResolver() {
if (this.mvcRegistrations != null) {
ExceptionHandlerExceptionResolver resolver = this.mvcRegistrations
.getExceptionHandlerExceptionResolver();
if (resolver != null) {
return resolver;
}
}
return super.createExceptionHandlerExceptionResolver();
}
@Override
protected void extendHandlerExceptionResolvers(List exceptionResolvers) {
super.extendHandlerExceptionResolvers(exceptionResolvers);
if (this.mvcProperties.isLogResolvedException()) {
for (HandlerExceptionResolver resolver : exceptionResolvers) {
if (resolver instanceof AbstractHandlerExceptionResolver) {
((AbstractHandlerExceptionResolver) resolver).setWarnLogCategory(resolver.getClass().getName());
}
}
}
}
@Bean
@Override
@SuppressWarnings("deprecation")
public ContentNegotiationManager mvcContentNegotiationManager() {
ContentNegotiationManager manager = super.mvcContentNegotiationManager();
List strategies = manager.getStrategies();
ListIterator iterator = strategies.listIterator();
while (iterator.hasNext()) {
ContentNegotiationStrategy strategy = iterator.next();
if (strategy instanceof org.springframework.web.accept.PathExtensionContentNegotiationStrategy) {
iterator.set(new OptionalPathExtensionContentNegotiationStrategy(strategy));
}
}
return manager;
}
@Override
public void setResourceLoader(ResourceLoader resourceLoader) {
this.resourceLoader = resourceLoader;
}
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnEnabledResourceChain
static class ResourceChainCustomizerConfiguration {
@Bean
@SuppressWarnings("deprecation")
ResourceChainResourceHandlerRegistrationCustomizer resourceHandlerRegistrationCustomizer(
org.springframework.boot.autoconfigure.web.ResourceProperties resourceProperties,
WebProperties webProperties) {
return new ResourceChainResourceHandlerRegistrationCustomizer(
resourceProperties.hasBeenCustomized() ? resourceProperties : webProperties.getResources());
}
}
interface ResourceHandlerRegistrationCustomizer {
void customize(ResourceHandlerRegistration registration);
}
static class ResourceChainResourceHandlerRegistrationCustomizer implements ResourceHandlerRegistrationCustomizer {
private final Resources resourceProperties;
ResourceChainResourceHandlerRegistrationCustomizer(Resources resourceProperties) {
this.resourceProperties = resourceProperties;
}
@Override
public void customize(ResourceHandlerRegistration registration) {
Resources.Chain properties = this.resourceProperties.getChain();
configureResourceChain(properties, registration.resourceChain(properties.isCache()));
}
@SuppressWarnings("deprecation")
private void configureResourceChain(Resources.Chain properties, ResourceChainRegistration chain) {
Strategy strategy = properties.getStrategy();
if (properties.isCompressed()) {
chain.addResolver(new EncodedResourceResolver());
}
if (strategy.getFixed().isEnabled() || strategy.getContent().isEnabled()) {
chain.addResolver(getVersionResourceResolver(strategy));
}
if (properties instanceof org.springframework.boot.autoconfigure.web.ResourceProperties.Chain
&& ((org.springframework.boot.autoconfigure.web.ResourceProperties.Chain) properties)
.isHtmlApplicationCache()) {
chain.addTransformer(new org.springframework.web.servlet.resource.AppCacheManifestTransformer());
}
}
private ResourceResolver getVersionResourceResolver(Strategy properties) {
VersionResourceResolver resolver = new VersionResourceResolver();
if (properties.getFixed().isEnabled()) {
String version = properties.getFixed().getVersion();
String[] paths = properties.getFixed().getPaths();
resolver.addFixedVersionStrategy(version, paths);
}
if (properties.getContent().isEnabled()) {
String[] paths = properties.getContent().getPaths();
resolver.addContentVersionStrategy(paths);
}
return resolver;
}
}
/**
* Decorator to make
* {@link org.springframework.web.accept.PathExtensionContentNegotiationStrategy}
* optional depending on a request attribute.
*/
static class OptionalPathExtensionContentNegotiationStrategy implements ContentNegotiationStrategy {
@SuppressWarnings("deprecation")
private static final String SKIP_ATTRIBUTE = org.springframework.web.accept.PathExtensionContentNegotiationStrategy.class
.getName() + ".SKIP";
private final ContentNegotiationStrategy delegate;
OptionalPathExtensionContentNegotiationStrategy(ContentNegotiationStrategy delegate) {
this.delegate = delegate;
}
@Override
public List resolveMediaTypes(NativeWebRequest webRequest)
throws HttpMediaTypeNotAcceptableException {
Object skip = webRequest.getAttribute(SKIP_ATTRIBUTE, RequestAttributes.SCOPE_REQUEST);
if (skip != null && Boolean.parseBoolean(skip.toString())) {
return MEDIA_TYPE_ALL_LIST;
}
return this.delegate.resolveMediaTypes(webRequest);
}
}
}
