org.springframework.web.reactive.config

Class ResourceHandlerRegistry

java.lang.Object

org.springframework.web.reactive.config.ResourceHandlerRegistry

public class ResourceHandlerRegistry
extends java.lang.Object

Stores registrations of resource handlers for serving static resources such as images, css files and others through Spring WebFlux including setting cache headers optimized for efficient loading in a web browser. Resources can be served out of locations under web application root, from the classpath, and others.

To create a resource handler, use addResourceHandler(String...) providing the URL path patterns for which the handler should be invoked to serve static resources (e.g. "/resources/**").

Then use additional methods on the returned ResourceHandlerRegistration to add one or more locations from which to serve static content from (e.g. {"/", "classpath:/META-INF/public-web-resources/"}) or to specify a cache period for served resources.

Since:

5.0

Author:

Rossen Stoyanchev, Brian Clozel

Field Summary

Fields

Modifier and Type	Field and Description
private int	order
private java.util.List<ResourceHandlerRegistration>	registrations
private ResourceLoader	resourceLoader
private ResourceUrlProvider	resourceUrlProvider

Constructor Summary

Constructors

Constructor and Description
ResourceHandlerRegistry(ResourceLoader resourceLoader) Create a new resource handler registry for the given resource loader (typically an application context).

Method Summary

Modifier and Type	Method and Description
ResourceHandlerRegistration	addResourceHandler(java.lang.String... patterns) Add a resource handler for serving static resources based on the specified URL path patterns.
protected AbstractUrlHandlerMapping	getHandlerMapping() Return a handler mapping with the mapped resource handlers; or null in case of no registrations.
boolean	hasMappingForPattern(java.lang.String pathPattern) Whether a resource handler has already been registered for the given path pattern.
ResourceHandlerRegistry	setOrder(int order) Specify the order to use for resource handling relative to other HandlerMappings configured in the Spring configuration.
void	setResourceUrlProvider(ResourceUrlProvider resourceUrlProvider) Configure the ResourceUrlProvider that can be used by ResourceTransformer instances.

Methods inherited from class java.lang.Object

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

Field Detail

resourceLoader

private final ResourceLoader resourceLoader

registrations

private final java.util.List<ResourceHandlerRegistration> registrations

order

private int order

resourceUrlProvider

@Nullable
private ResourceUrlProvider resourceUrlProvider

Constructor Detail

ResourceHandlerRegistry

public ResourceHandlerRegistry(ResourceLoader resourceLoader)

Create a new resource handler registry for the given resource loader (typically an application context).

Parameters:

resourceLoader - the resource loader to use

Method Detail

setResourceUrlProvider

public void setResourceUrlProvider(@Nullable
                                   ResourceUrlProvider resourceUrlProvider)

Configure the ResourceUrlProvider that can be used by ResourceTransformer instances.

Parameters:

resourceUrlProvider - the resource URL provider to use

Since:

5.0.11

addResourceHandler

public ResourceHandlerRegistration addResourceHandler(java.lang.String... patterns)

Add a resource handler for serving static resources based on the specified URL path patterns. The handler will be invoked for every incoming request that matches to one of the specified path patterns.

Patterns like "/static/**" or "/css/{filename:\\w+\\.css}" are allowed. See PathPattern for more details on the syntax.

Returns:

a ResourceHandlerRegistration to use to further configure the registered resource handler

hasMappingForPattern

public boolean hasMappingForPattern(java.lang.String pathPattern)

Whether a resource handler has already been registered for the given path pattern.

setOrder

public ResourceHandlerRegistry setOrder(int order)

Specify the order to use for resource handling relative to other HandlerMappings configured in the Spring configuration.

The default value used is Integer.MAX_VALUE-1.

getHandlerMapping

@Nullable
protected AbstractUrlHandlerMapping getHandlerMapping()

Return a handler mapping with the mapped resource handlers; or null in case of no registrations.