Class ResourceTransformerSupport

All Implemented Interfaces:
Direct Known Subclasses:

public abstract class ResourceTransformerSupport extends Object implements ResourceTransformer
A base class for a ResourceTransformer with an optional helper method for resolving public links within a transformed resource.
Brian Clozel, Rossen Stoyanchev, Juergen Hoeller
  • Constructor Details

    • ResourceTransformerSupport

      public ResourceTransformerSupport()
  • Method Details

    • setResourceUrlProvider

      public void setResourceUrlProvider(@Nullable ResourceUrlProvider resourceUrlProvider)
      Configure a ResourceUrlProvider to use when resolving the public URL of links in a transformed resource (e.g. import links in a CSS file). This is required only for links expressed as full paths and not for relative links.
    • getResourceUrlProvider

      @Nullable public ResourceUrlProvider getResourceUrlProvider()
      Return the configured ResourceUrlProvider.
    • resolveUrlPath

      @Nullable protected String resolveUrlPath(String resourcePath, HttpServletRequest request, Resource resource, ResourceTransformerChain transformerChain)
      A transformer can use this method when a resource being transformed contains links to other resources. Such links need to be replaced with the public facing link as determined by the resource resolver chain (e.g. the public URL may have a version inserted).
      resourcePath - the path to a resource that needs to be re-written
      request - the current request
      resource - the resource being transformed
      transformerChain - the transformer chain
      the resolved URL, or if not resolvable
    • toAbsolutePath

      protected String toAbsolutePath(String path, HttpServletRequest request)
      Transform the given relative request path to an absolute path, taking the path of the given request as a point of reference. The resulting path is also cleaned from sequences like "path/..".
      path - the relative path to transform
      request - the referer request
      the absolute request path for the given resource path