RESTEasy

这个是JBOSS开发的一个WEB服务实现，可以说现在有非常丰富的特性。

• Fully certified JAX-RS implementation
• Portable to any app-server/Tomcat that runs on JDK 5 or higher
• Embeddedable server implementation for junit testing
• Client framework that leverages JAX-RS annotations so that you can write HTTP clients easily (JAX-RS only defines server bindings)
• Client "Browser" cache. Supports HTTP 1.1 caching semantics including cache revalidation
• Server in-memory cache. Local response cache. Automatically handles ETag generation and cache revalidation
• Rich set of providers for: XML, JSON, YAML, Fastinfoset, Multipart, XOP, Atom, etc.
• JAXB marshalling into XML, JSON, Jackson, Fastinfoset, and Atom as well as wrappers for maps, arrays, lists, and sets of JAXB Objects.
• GZIP content-encoding. Automatic GZIP compression/decompression suppport in client and server frameworks
• Asynchronous HTTP (Comet) abstractions for JBoss Web, Tomcat 6, and Servlet 3.0
• Asynchronous Job Service.
• Rich interceptor model.
• EJB, Seam, Guice, Spring, and Spring MVC integration

过几天试一下，看看好不好用。