In the webflow-showcase project the DTD Schema URL in the file WEB-INF/spring/appservlet/webflow.xml says:
but there's no such DTD online and there are several validation errors because of this. The latest DTD available seem to be
and changing to that get rid of the all errors but one:
has an unallowed validator attribute. I simply removed it.
<webflow:flow-builder-services id="flowBuilderServices" view-factory-creator="mvcViewFactoryCreator"
development="true" validator="validator" >
The file standard.jsp in "layouts" inlcudes the taglib URL http://www.springframework.org/security/tags , but as that is currently offline there is an error. This is the same URL as in the documentation so seemingly nothing's wrong with it.
After these errors have been addressed (and the taglib URL simply ignored), the project builds and runs in Tomcat without noticeable problems.