Created attachment 28138 [details] Patch In some cases (e.g. OSGi web modules) jasper.jar and dtds will be in different classloaders making the need for setting up custom entity resolver so dtds can be retrieved. A simple patch is attached. This is already added in Glassfish's jasper fork and Jetty project is making use of it. Applying the patch will allow using Tomcat's Jasper in Jetty instead of Glassfish's one. See http://git.eclipse.org/c/jetty/org.eclipse.jetty.project.git/tree/jetty-osgi/jetty-osgi-boot-jsp/src/main/java/org/eclipse/jetty/osgi/boot/jasper/WebappRegistrationCustomizerImpl.java?id=306947b1420beed76c772e546eb3120b3bf4b112#n181 for details about the change and why it was needed.
Patch applied. Thanks!