As Meeraj mentioned previously, SCA also provides protocol abstraction so that code does not need to deal with low-level transport APIs when making remote calls.
如Meeraj之前所说，SCA还提供了协议抽象，这样在远程调用时代码就无需处理低级的传输层api。
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Much like JAX-WS abstracts the low-level details of the SOAP protocol for web service applications, JAX-RS abstracts REST development to POJO programming and annotation based configuration.