org.springframework.web.reactive.resource

Class ResourceUrlProvider

java.lang.Object

org.springframework.web.reactive.resource.ResourceUrlProvider

All Implemented Interfaces:

java.util.EventListener, ApplicationListener<ContextRefreshedEvent>

public class ResourceUrlProvider
extends java.lang.Object
implements ApplicationListener<ContextRefreshedEvent>

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

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<PathPattern,ResourceWebHandler>	handlerMap
private static Log	logger
private PathPatternParser	patternParser

Constructor Summary

Constructors

Constructor and Description
ResourceUrlProvider()

Method Summary

Modifier and Type	Method and Description
private void	detectResourceHandlers(ApplicationContext context)
<any>	getForUriString(java.lang.String uriString, ServerWebExchange exchange) Get the public resource URL for the given URI string.
java.util.Map<PathPattern,ResourceWebHandler>	getHandlerMap() Return a read-only view of the resource handler mappings either manually configured or auto-detected from Spring configuration.
private int	getQueryIndex(java.lang.String path)
void	onApplicationEvent(ContextRefreshedEvent event) Handle an application event.
private static java.lang.String	prependLeadingSlash(java.lang.String pattern)
void	registerHandlers(java.util.Map<java.lang.String,ResourceWebHandler> handlerMap) Manually configure resource handler mappings.
private <any>	resolveResourceUrl(PathContainer lookupPath)

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final Log logger

patternParser

private final PathPatternParser patternParser

handlerMap

private final java.util.Map<PathPattern,ResourceWebHandler> handlerMap

Constructor Detail

ResourceUrlProvider

public ResourceUrlProvider()

Method Detail

getHandlerMap

public java.util.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(java.util.Map<java.lang.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

detectResourceHandlers

private void detectResourceHandlers(ApplicationContext context)

getForUriString

public final <any> getForUriString(java.lang.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

getQueryIndex

private int getQueryIndex(java.lang.String path)

resolveResourceUrl

private <any> resolveResourceUrl(PathContainer lookupPath)

prependLeadingSlash

private static java.lang.String prependLeadingSlash(java.lang.String pattern)