Class CachingResourceTransformer
java.lang.Object
org.springframework.web.servlet.resource.CachingResourceTransformer
- All Implemented Interfaces:
ResourceTransformer
A
ResourceTransformer
that checks a
Cache
to see if a previously transformed resource
exists in the cache and returns it if found, and otherwise delegates to the resolver
chain and saves the result in the cache.- Since:
- 4.1
- Author:
- Rossen Stoyanchev
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Constructor Summary
ConstructorDescriptionCachingResourceTransformer
(org.springframework.cache.Cache cache) CachingResourceTransformer
(org.springframework.cache.CacheManager cacheManager, String cacheName) -
Method Summary
Modifier and TypeMethodDescriptionorg.springframework.cache.Cache
getCache()
Return the configuredCache
.org.springframework.core.io.Resource
transform
(HttpServletRequest request, org.springframework.core.io.Resource resource, ResourceTransformerChain transformerChain) Transform the given resource.
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Constructor Details
-
CachingResourceTransformer
public CachingResourceTransformer(org.springframework.cache.Cache cache) -
CachingResourceTransformer
public CachingResourceTransformer(org.springframework.cache.CacheManager cacheManager, String cacheName)
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Method Details
-
getCache
public org.springframework.cache.Cache getCache()Return the configuredCache
. -
transform
public org.springframework.core.io.Resource transform(HttpServletRequest request, org.springframework.core.io.Resource resource, ResourceTransformerChain transformerChain) throws IOException Description copied from interface:ResourceTransformer
Transform the given resource.- Specified by:
transform
in interfaceResourceTransformer
- Parameters:
request
- the current requestresource
- the resource to transformtransformerChain
- the chain of remaining transformers to delegate to- Returns:
- the transformed resource (never
null
) - Throws:
IOException
- if the transformation fails
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