[WICKET-6669] CSS Resource Bundling throws exception when used with CssUrlReplacer

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 7.10.0
• Fix Version/s: 8.5.0, 9.0.0-M2, 7.14.0
• Component/s: wicket
• Assignee: Martin Tzvetanov Grigorov
• Reporter: Claudia Hirt
• Created: 22/May/19 14:57
• Updated: 14/Jan/21 05:07
• Resolved: 23/May/19 11:56

Description

Using CssUrlReplacer as compressor and trying to create a Css Resource bundle like this:

getResourceSettings().setCssCompressor(new CssUrlReplacer());

getResourceBundles().addCssBundle(WicketApplication.class, "testBundle", new CssResourceReference(WicketApplication.class, "css/cssFile1.css"), new CssResourceReference(WicketApplication.class, "css/cssFile2.css"));

I get the following stack trace when requesting one of the css files:

Caused by: java.lang.UnsupportedOperationException: CssUrlReplacer.process() should be used instead!
at org.apache.wicket.resource.CssUrlReplacer.compress(CssUrlReplacer.java:159) ~[wicket-core-7.10.0.jar:7.10.0]
at org.apache.wicket.resource.bundles.ConcatBundleResource.readAllResources(ConcatBundleResource.java:184) ~[wicket-core-7.10.0.jar:7.10.0]

....

ConcatBundleResource calls the compress method of CssUrlReplacer which throws the exception.

Issue Links

• causes: WICKET-6860 ConcatBundleResource double scope processing when CssUrlReplacer is used
• is caused by: WICKET-5827 Allow to apply multiple Javascript / CSS compressors
• is duplicated by: WICKET-6611 Missing check for IScopeAwareTextResourceProcessor when concatenating resources