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The dspace-rest module is automatically configured to compile and build with DSpace 4.0, so a mvn+ant process will create the webapp. To make it work in your environment, you would just need to add a context entry for it in your servlet container. For example, in tomcat, one might alter tomcat$CATALINA_homeHOME/conf/server.xml and add:

<Context path="/rest" docBase="/dspace/webapps/rest" allowLinking="true"/>

Additional Information

Additional information can be found in the README for dspace-rest, and in the GitHub Pull Request for DSpace REST (Jersey).

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