一个优于RoR的快速开发框架playframework，完全面向对象，基于jvm的REST框架，文档非常少，上手很容易，从名字上可以看出play就是玩，可以当作游戏一样轻松的玩的框架！

http://www.playframework.org/  

Quick overview

Reach your maximum productivity Edit your Java files, save, refresh your browser and see the results immediately! No need to compile, deploy or restart the server.

Stateless model Play! is a real "Share nothing" system. Ready for REST, it is easily scaled by running multiple instances of the same application on several servers.

Efficient template system A clean template system based on Groovy as an expression language. It provides template inheritence, includes and tags.

All you need to create a cool web application Provides integration with Hibernate, OpenID, Memcached, ... and a plugin system.

Resolve errors quickly When an error occurs, Play! show you the source code and the exact line containing the problem. Even in templates.

Pure Java Code with Java, use any Java library and develop with your preferred IDE. It integrates nicely with eclipse or netbeans.

Really fast Starts fast and is fast !