HATEOAS is a constraint of the REST application architecture which is very often ignored by developers. In many cases this is caused by the lack of support of frameworks used to build and expose RESTful services. In this post I will show how quickly we can add HATEOAS to RESTful web services using Spring Framework. Source code of the demo web application presented below are available for download, run it using
mvn tomcat7:run command. Also you can read a nice presentation about why HATEOAS is important.
The Spring HATEOAS Library (currently in Release 0.6) provides API to help creating REST representations that follow the HATEOAS principle. The core problem it tries to address is link creation and representation assembly. Let's see the main steps required for enabling the HATEOAS for a RESTful web service: