Extensionless URLs with JSF 2.3
An extensionless URL is a URL without a final suffix like .xhtml , .html , .jsp , etc. Such a suffix is seen as technical "clutter" that's hard to remember for humans. Servers often need it though to route a request to the right controller. JSF, a Java EE MVC framework, has supported extensionless URLs for some time via PrettyFaces (now merged to the general Rewrite framework) and OmniFaces . Both of these solutions used various workarounds to trick JSF into working with extensionless URLs. Though JSF 2.3 does, unfortunately, still not support extensionless URLs fully out of the box via e.g. a single parameter, it can provide support for it by basically combining the new support for exact mapping and the API for obtaining a list of all view resources . Additionally combining this with the Servlet 3.1 feature for dynamically adding Servlet mappings and some JDK8 streaming and lambdas, makes it possible to enable extensionless support with just 2 statements (albeit so...