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, PathResourceResolver, VersionResourceResolver, WebJarsResourceResolver

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 Log	logger

Constructor Summary

Constructors

Constructor	Description
AbstractResourceResolver()

Method Summary

Modifier and Type	Method	Description
Resource	resolveResource(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 Resource	resolveResourceInternal(HttpServletRequest request, String requestPath, List<? extends Resource> locations, ResourceResolverChain chain)
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 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 Log logger

Constructor Details

AbstractResourceResolver

public AbstractResourceResolver()

Method Details

resolveResource

@Nullable
public 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

@Nullable
public 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

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

resolveUrlPathInternal

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