org.springframework.web.servlet.config.annotation

Class ResourceHandlerRegistry

java.lang.Object

org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry

public class ResourceHandlerRegistry
extends Object

Stores registrations of resource handlers for serving static resources such as images, css files and others through Spring MVC 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:

3.1

Author:

Rossen Stoyanchev

See Also:

DefaultServletHandlerConfigurer

Constructor Summary

Constructors

Constructor and Description
ResourceHandlerRegistry(ApplicationContext applicationContext, ServletContext servletContext) Create a new resource handler registry for the given application context.
ResourceHandlerRegistry(ApplicationContext applicationContext, ServletContext servletContext, ContentNegotiationManager contentNegotiationManager) Create a new resource handler registry for the given application context.
ResourceHandlerRegistry(ApplicationContext applicationContext, ServletContext servletContext, ContentNegotiationManager contentNegotiationManager, UrlPathHelper pathHelper) A variant of ResourceHandlerRegistry(ApplicationContext, ServletContext, ContentNegotiationManager) that also accepts the UrlPathHelper used for mapping requests to static resources.

Method Summary

Modifier and Type	Method and Description
ResourceHandlerRegistration	addResourceHandler(String... pathPatterns) Add a resource handler to serve static resources.
protected AbstractHandlerMapping	getHandlerMapping() Return a handler mapping with the mapped resource handlers; or null in case of no registrations.
boolean	hasMappingForPattern(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 MVC application context.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResourceHandlerRegistry

public ResourceHandlerRegistry(ApplicationContext applicationContext,
                               ServletContext servletContext)

Create a new resource handler registry for the given application context.

Parameters:

applicationContext - the Spring application context

servletContext - the corresponding Servlet context

ResourceHandlerRegistry

public ResourceHandlerRegistry(ApplicationContext applicationContext,
                               ServletContext servletContext,
                               @Nullable
                               ContentNegotiationManager contentNegotiationManager)

Create a new resource handler registry for the given application context.

Parameters:

applicationContext - the Spring application context

servletContext - the corresponding Servlet context

contentNegotiationManager - the content negotiation manager to use

Since:

4.3

ResourceHandlerRegistry

public ResourceHandlerRegistry(ApplicationContext applicationContext,
                               ServletContext servletContext,
                               @Nullable
                               ContentNegotiationManager contentNegotiationManager,
                               @Nullable
                               UrlPathHelper pathHelper)

A variant of ResourceHandlerRegistry(ApplicationContext, ServletContext, ContentNegotiationManager) that also accepts the UrlPathHelper used for mapping requests to static resources.

Since:

4.3.13

Method Detail

addResourceHandler

public ResourceHandlerRegistration addResourceHandler(String... pathPatterns)

Add a resource handler to serve static resources. The handler is invoked for requests that match one of the specified URL path patterns.

Patterns such as "/static/**" or "/css/{filename:\\w+\\.css}" are supported.

For pattern syntax see PathPattern when parsed patterns are enabled or AntPathMatcher otherwise. The syntax is largely the same with PathPattern more tailored for web usage and more efficient.

hasMappingForPattern

public boolean hasMappingForPattern(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 MVC application context.

The default value used is Integer.MAX_VALUE-1.

getHandlerMapping

@Nullable
protected AbstractHandlerMapping getHandlerMapping()

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