Since Tomcat 9.0.70, the following problem occurs.

When loading resources (e.g. a font from a jar file) an URISyntaxException is thrown, if the URI is not valid. However, this also includes URLs which contain blanks, meaning that loading resources that contain a blank, the resource cannot be loaded since the determined URL is null.

E.g. Tomcat 7.0.69 was able to load the following resource: "MS Sans Serif.ttf", whereas Tomcat 7.0.70 is not able to load it anymore, with the following debug message:

04-Jan-2023 09:56:22.921 FEIN [http-nio-7000-exec-12] org.apache.catalina.webresources.AbstractArchiveResource.getURL Unable to determine a URL for the resource [jar:file:/C:/iheroot/ihe-main-4.2.x/client-web/module/target/ihe.module/WEB-INF/lib/ihe-jasperreports-fonts-4.5.1.jar!/net/sf/jasperreports/fonts/mssansserif/MS Sans Serif.ttf]
	java.net.URISyntaxException: Illegal character in opaque part at index 108: jar:file:/C:/module/WEB-INF/lib/ihe-jasperreports-fonts-4.5.1.jar!/net/sf/jasperreports/fonts/mssansserif/MS Sans Serif.ttf
		at java.net.URI$Parser.fail(URI.java:2847)
		at java.net.URI$Parser.checkChars(URI.java:3020)
		at java.net.URI$Parser.parse(URI.java:3057)
		at java.net.URI.<init>(URI.java:588)
		at org.apache.catalina.webresources.AbstractArchiveResource.getURL(AbstractArchiveResource.java:144)
		at org.apache.catalina.webresources.CachedResource.getURL(CachedResource.java:348)
		at org.apache.catalina.loader.WebappClassLoaderBase.findResource(WebappClassLoaderBase.java:956)
		at org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClassLoaderBase.java:1078)

Some investigation on our side showed that org.apache.cataline.webresources.AbstractArchiveResource#getURL() has changed from version 7.0.69 to 7.0.70. Instead of using the java.net.URL directly, java.net.URI(url).toURL() is used now. The problem is, that the URL is not encoded properly.

The hardware and OS should not influence this bug.