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The All-in-One Guide to Java Programming

JAX-RS

Explore the fundamentals of JAX-RS, the Java API for RESTful Web Services. Understand how to use key annotations, the client API, and asynchronous processing. Learn about filters, interceptors, and HATEOS for building robust RESTful services in Java.

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JAX-RS 1.0

JAX-RS 1.0 (the Java API for RESTful Web Services) was defined in JSR-311¹⁶⁴. It has many implementations, including the following:

  • CXF: A merger between XFire and Celtix (an Open Source ESB, sponsored by IONA, and originally hosted at ObjectWeb).
  • Jersey : The JAX-RS Reference Implementation from Oracle.
  • RESTEasy : JBoss’s JAX-RS project.

JAX-RS defines a set of request method designators for the common HTTP methods: @GET, @POST, @PUT, @DELETE, and @HEAD.

When a resource class is instantiated, the values of fields and bean properties annotated with one of the following annotations are set according to the semantics of the annotation:

  • @MatrixParam: Extracts the value of a URI matrix parameter.
  • @QueryParam: Extracts the value of a URI query
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