public class CSSURLRewriter extends DelegatingSRS
url() attributes inside a CSS (MIME type "text/css")) resource.
Each url is expanded to a complete path; this allows for CSS aggregation, where the location of the
CSS file will change (which would ordinarily break relative URLs), and for changing the relative directories of
the CSS file and the image assets it may refer to (useful for incorporating a hash of the resource's content into
the exposed URL).
One potential problem with URL rewriting is the way that URLs for referenced resources are generated; we are
somewhat banking on the fact that referenced resources are non-compressable images.SymbolConstants.STRICT_CSS_URL_REWRITINGdelegate| Constructor and Description |
|---|
CSSURLRewriter(StreamableResourceSource delegate,
OperationTracker tracker,
AssetSource assetSource,
AssetChecksumGenerator checksumGenerator,
boolean strictCssUrlRewriting) |
| Modifier and Type | Method and Description |
|---|---|
StreamableResource |
getStreamableResource(Resource baseResource,
StreamableResourceProcessing processing,
ResourceDependencies dependencies)
Converts a Resource (which must be non-null and exist) into a streamable resource, along with
some additional optional behaviors.
|
fileExtensionsForContentTypepublic CSSURLRewriter(StreamableResourceSource delegate, OperationTracker tracker, AssetSource assetSource, AssetChecksumGenerator checksumGenerator, boolean strictCssUrlRewriting)
public StreamableResource getStreamableResource(Resource baseResource, StreamableResourceProcessing processing, ResourceDependencies dependencies) throws IOException
StreamableResourceSourcegetStreamableResource in interface StreamableResourceSourcegetStreamableResource in class DelegatingSRSbaseResource - the resource to convertprocessing - defines additional processing after the resource has been read and possibly transformeddependencies - Passed to any ResourceTransformer to track additional dependencies of the base resourceIOException - if the resource does not exist or a URL for the content is not available5.6.4 - Copyright © 2003-2021 The Apache Software Foundation.