protected List<ResourceTransformer> getResourceTransformers() { if (this.hasVersionResolver && !this.hasCssLinkTransformer) { List<ResourceTransformer> result = new ArrayList<>(this.transformers); boolean hasTransformers = !this.transformers.isEmpty(); boolean hasCaching = hasTransformers && this.transformers.get(0) instanceof CachingResourceTransformer; result.add(hasCaching ? 1 : 0, new CssLinkResourceTransformer()); return result; } return this.transformers; }
@Before public void setup() { VersionResourceResolver versionResolver = new VersionResourceResolver(); versionResolver.setStrategyMap(Collections.singletonMap("/**", new ContentVersionStrategy())); List<ResourceResolver> resolvers = new ArrayList<>(); resolvers.add(versionResolver); resolvers.add(new PathResourceResolver()); CssLinkResourceTransformer cssLinkTransformer = new CssLinkResourceTransformer(); cssLinkTransformer.setResourceUrlProvider(createUrlProvider(resolvers)); this.transformerChain = new DefaultResourceTransformerChain( new DefaultResourceResolverChain(resolvers), Collections.singletonList(cssLinkTransformer)); }
@Test public void transformExtLinksNotAllowed() { MockServerWebExchange exchange = MockServerWebExchange.from(get("/static/external.css")); List<ResourceTransformer> transformers = Collections.singletonList(new CssLinkResourceTransformer()); ResourceResolverChain mockChain = Mockito.mock(DefaultResourceResolverChain.class); ResourceTransformerChain chain = new DefaultResourceTransformerChain(mockChain, transformers); Resource resource = getResource("external.css"); String expected = "@import url(\"http://example.org/fonts/css\");\n" + "body { background: url(\"file:///home/spring/image.png\") }\n" + "figure { background: url(\"//example.org/style.css\")}"; StepVerifier.create(chain.transform(exchange, resource) .cast(TransformedResource.class)) .consumeNextWith(transformedResource -> { String result = new String(transformedResource.getByteArray(), StandardCharsets.UTF_8); result = StringUtils.deleteAny(result, "\r"); assertEquals(expected, result); }) .expectComplete() .verify(); List<Resource> locations = Collections.singletonList(resource); Mockito.verify(mockChain, Mockito.never()).resolveUrlPath("http://example.org/fonts/css", locations); Mockito.verify(mockChain, Mockito.never()).resolveUrlPath("file:///home/spring/image.png", locations); Mockito.verify(mockChain, Mockito.never()).resolveUrlPath("//example.org/style.css", locations); }
CachingResourceTransformer cachingTransformer = Mockito.mock(CachingResourceTransformer.class); AppCacheManifestTransformer appCacheTransformer = Mockito.mock(AppCacheManifestTransformer.class); CssLinkResourceTransformer cssLinkTransformer = new CssLinkResourceTransformer();
protected List<ResourceTransformer> getResourceTransformers() { if (this.hasVersionResolver && !this.hasCssLinkTransformer) { List<ResourceTransformer> result = new ArrayList<>(this.transformers); boolean hasTransformers = !this.transformers.isEmpty(); boolean hasCaching = hasTransformers && this.transformers.get(0) instanceof CachingResourceTransformer; result.add(hasCaching ? 1 : 0, new CssLinkResourceTransformer()); return result; } return this.transformers; }