我是 Restlet 的忠实粉丝,但我通常使用它来实现主要角色是成为RESTful Web 服务的应用程序。听起来您希望将 RESTful API 添加到现有应用程序。如果是这种情况,JAX-RS(或 Enunciate)的基于注释的方法可能更适合您的项目。
As for Restlet, I can tell you that I've been very impressed with the developers and the community; they're very active, engaged, responsive, and committed to a stable, efficient, reliable, and effective framework. My single favorite aspect of the framework is that it is a ground-up implementation of the REST paradigm; therefore there is no impedance-mismatch between a Restlet app's external API and internal implementation. I also really like how flexible it is - it can run inside a Java application container/server such as JBoss, Tomcat, Jetty, etc, or standalone, with an embedded HTTP server library.