Following up on my own question, there doesn't appear to be any that quite fit the bill right now, if we define the ideal framework as having the following characteristics:
* Java as a first-class citizen
* Strong core of basic web app functionality
* REST and Search engine friendly URLs
* Action oriented – basic framework for routes, MVC etc
* Stateless
* Good documentation, active community
If we look at action frameworks only:
* Play 2: Great except it's Scala. Ruled out.
* Spring MVC: Spring is bloated old-school Java with Hibernate. Out.
* Stripes: hasn’t had a commit in over a year… which is unfortunate because it looks interesting. Out.
* Spark: appears to be a one-person project. Out.
* Google Sitebricks – ditto
* Ninja: Ditto
* Java as a first-class citizen
* Strong core of basic web app functionality
* REST and Search engine friendly URLs
* Action oriented – basic framework for routes, MVC etc
* Stateless
* Good documentation, active community
If we look at action frameworks only:
* Play 2: Great except it's Scala. Ruled out.
* Spring MVC: Spring is bloated old-school Java with Hibernate. Out.
* Stripes: hasn’t had a commit in over a year… which is unfortunate because it looks interesting. Out.
* Spark: appears to be a one-person project. Out.
* Google Sitebricks – ditto
* Ninja: Ditto