Class ResourceUrlProvider

java.lang.Object

org.springframework.web.reactive.resource.ResourceUrlProvider

All Implemented Interfaces:

EventListener, Aware, ApplicationContextAware, ApplicationListener<ContextRefreshedEvent>

public class ResourceUrlProvider
extends Object
implements ApplicationListener<ContextRefreshedEvent>, ApplicationContextAware

A central component to use to obtain the public URL path that clients should use to access a static resource.

This class is aware of Spring WebFlux handler mappings used to serve static resources and uses the ResourceResolver chains of the configured ResourceHttpRequestHandlers to make its decisions.

Since:

5.0

Author:

Rossen Stoyanchev, Brian Clozel

Constructor Summary

Constructors

Constructor	Description
ResourceUrlProvider()

Method Summary

Modifier and Type	Method	Description
final reactor.core.publisher.Mono<String>	getForUriString(String uriString, ServerWebExchange exchange)	Get the public resource URL for the given URI string.
Map<PathPattern, ResourceWebHandler>	getHandlerMap()	Return a read-only view of the resource handler mappings either manually configured or auto-detected from Spring configuration.
void	onApplicationEvent(ContextRefreshedEvent event)	Handle an application event.
void	registerHandlers(Map<String, ResourceWebHandler> handlerMap)	Manually configure resource handler mappings.
void	setApplicationContext(ApplicationContext applicationContext)	Set the ApplicationContext that this object runs in.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.context.ApplicationListener

supportsAsyncExecution

Constructor Details

ResourceUrlProvider

public ResourceUrlProvider()

Method Details

setApplicationContext

public void setApplicationContext(ApplicationContext applicationContext)
                           throws BeansException

Description copied from interface: ApplicationContextAware

Set the ApplicationContext that this object runs in. Normally this call will be used to initialize the object.

Invoked after population of normal bean properties but before an init callback such as InitializingBean.afterPropertiesSet() or a custom init-method. Invoked after ResourceLoaderAware.setResourceLoader(org.springframework.core.io.ResourceLoader), ApplicationEventPublisherAware.setApplicationEventPublisher(org.springframework.context.ApplicationEventPublisher) and MessageSourceAware, if applicable.

Specified by:

setApplicationContext in interface ApplicationContextAware

Parameters:

applicationContext - the ApplicationContext object to be used by this object

Throws:

BeansException - if thrown by application context methods

See Also:

• BeanInitializationException

getHandlerMap

public Map<PathPattern, ResourceWebHandler> getHandlerMap()

Return a read-only view of the resource handler mappings either manually configured or auto-detected from Spring configuration.

registerHandlers

public void registerHandlers(Map<String, ResourceWebHandler> handlerMap)

Manually configure resource handler mappings.

Note: by default resource mappings are auto-detected from the Spring ApplicationContext. If this property is used, auto-detection is turned off.

onApplicationEvent

public void onApplicationEvent(ContextRefreshedEvent event)

Description copied from interface: ApplicationListener

Handle an application event.

Specified by:

onApplicationEvent in interface ApplicationListener<ContextRefreshedEvent>

Parameters:

event - the event to respond to

getForUriString

public final reactor.core.publisher.Mono<String> getForUriString(String uriString,
 ServerWebExchange exchange)

Get the public resource URL for the given URI string.

The URI string is expected to be a path and if it contains a query or fragment those will be preserved in the resulting public resource URL.

Parameters:

uriString - the URI string to transform

exchange - the current exchange

Returns:

the resolved public resource URL path, or empty if unresolved