Package org.springframework.web.servlet.resource

Class AbstractResourceResolver

java.lang.Object

org.springframework.web.servlet.resource.AbstractResourceResolver

All Implemented Interfaces:

ResourceResolver

Direct Known Subclasses:

CachingResourceResolver, EncodedResourceResolver, LiteWebJarsResourceResolver, PathResourceResolver, VersionResourceResolver

public abstract class AbstractResourceResolver
extends Object
implements ResourceResolver

Base class for ResourceResolver implementations. Provides consistent logging.

Since:

4.1

Author:

Rossen Stoyanchev

Field Summary

Fields

Modifier and Type	Field	Description
protected final org.apache.commons.logging.Log	logger

Constructor Summary

Constructors

Constructor	Description
AbstractResourceResolver()

Method Summary

Modifier and Type	Method	Description
@Nullable Resource	resolveResource(@Nullable HttpServletRequest request, String requestPath, List<? extends Resource> locations, ResourceResolverChain chain)	Resolve the supplied request and request path to a Resource that exists under one of the given resource locations.
protected abstract @Nullable Resource	resolveResourceInternal(@Nullable HttpServletRequest request, String requestPath, List<? extends Resource> locations, ResourceResolverChain chain)
@Nullable String	resolveUrlPath(String resourceUrlPath, List<? extends Resource> locations, ResourceResolverChain chain)	Resolve the externally facing public URL path for clients to use to access the resource that is located at the given internal resource path.
protected abstract @Nullable String	resolveUrlPathInternal(String resourceUrlPath, List<? extends Resource> locations, ResourceResolverChain chain)

Methods inherited from class java.lang.Object

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

Field Details

logger

protected final org.apache.commons.logging.Log logger

Constructor Details

AbstractResourceResolver

public AbstractResourceResolver()

Method Details

resolveResource

public @Nullable Resource resolveResource(@Nullable HttpServletRequest request,
 String requestPath,
 List<? extends Resource> locations,
 ResourceResolverChain chain)

Description copied from interface: ResourceResolver

Resolve the supplied request and request path to a Resource that exists under one of the given resource locations.

Specified by:

resolveResource in interface ResourceResolver

Parameters:

request - the current request (may not be present in some calls)

requestPath - the portion of the request path to use

locations - the locations to search in when looking up resources

chain - the chain of remaining resolvers to delegate to

Returns:

the resolved resource, or null if unresolved

resolveUrlPath

public @Nullable String resolveUrlPath(String resourceUrlPath,
 List<? extends Resource> locations,
 ResourceResolverChain chain)

Description copied from interface: ResourceResolver

Resolve the externally facing public URL path for clients to use to access the resource that is located at the given internal resource path.

This is useful when rendering URL links to clients.

Specified by:

resolveUrlPath in interface ResourceResolver

Parameters:

resourceUrlPath - the internal resource path

locations - the locations to search in when looking up resources

chain - the chain of resolvers to delegate to

Returns:

the resolved public URL path, or null if unresolved

resolveResourceInternal

protected abstract @Nullable Resource resolveResourceInternal(@Nullable HttpServletRequest request,
 String requestPath,
 List<? extends Resource> locations,
 ResourceResolverChain chain)

resolveUrlPathInternal

protected abstract @Nullable String resolveUrlPathInternal(String resourceUrlPath,
 List<? extends Resource> locations,
 ResourceResolverChain chain)