JAX-RS vs Spring REST - Differences

In this article, I will be covering the differences between JAX-RS/Jersey and Spring REST.

What is REST?

REST stands for Representational State Transfer.  It is an architectural style that can be used for web services. A REST server exposes functionality as REST endpoints which are simply URLs. A REST client simply uses the services exposed by the REST server by accessing the corresponding URL.

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What is JAX-RS

JAX-RS stands for Java API for RESTful Web Services (JAX-RS). It is the standard Java API for developing RESTful web services. The latest version of JAX-RS is JAX-RS 2.0.  It is part of Java EE 7, so it does not need to be included separately. It is just a specification, it does not provide an implementation. Jersey is the reference implementation of JAX-RS specification. There are other implementations of JAX-RS like RESTEasy, etc

 

What is Spring REST

The Spring framework also provides REST support. The Spring MVC module can be used to develop a REST service. It defines several annotations that you can use to develop a REST application.

What are the differences between JAX-RS and Spring REST

Although both JAX-RS and Spring REST can be used to create a RESTful service in Java, there are several differences between the two as follows:

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JAX-RSSpring REST
JAX-RS is the standard Java specification for RESTful web servicesSpring REST is an alternate way of writing REST services in Java, it does not implement JAX-RS
JAX-RS is just a specification, you will need to include an implementation like Jersey in order to write REST servicesSpring REST is the complete implementation for RESTful services by Spring. It can be used by itself. It does not implement JAX-RS
JAX-RS uses standard annotations that are part of Java EESpring REST uses its own custom annotations for REST

Some important annotations in JAX-RS and Spring REST

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JAX-RSSpring RESTUse of annotation
@Get@RequestMapping, @GetMappingUsed to specify that the method maps to an HTTP GET method
@Post@RequestMapping, @GetMappingUsed to specify that the method maps to an HTTP POST method
@Path@RequestMappingUsed to specify The URI that the method or class maps to
@QueryParam@RequestParamUsed to specify a query parameter
@PathParam@PathVariableUsed to specify a path parameter

Further Learning

Spring MasterClass
Spring Tutorial For Beginners
Step by Step Spring MVC Tutorial
Spring Framework in Easy Steps
Developing RESTful web services using JAX-RS and Jersey

Conclusion

In this article, I provided a comparison between JAX-RS and Spring REST. I hope this article was useful in understanding the differences between Spring REST and JAX-RS.

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