Session management is the purview of the container in which Jersey is deployed. In most production cases, it will be deployed within a container that performs session management.
The code below is a simple example of a jersey resource that gets the session object and stores values in the session and retrieves them on subsequent calls.
@Path("/helloworld")
public class HelloWorld {
@GET
@Produces("text/plain")
public String hello(@Context HttpServletRequest req) {
HttpSession session= req.getSession(true);
Object foo = session.getAttribute("foo");
if (foo!=null) {
System.out.println(foo.toString());
} else {
foo = "bar";
session.setAttribute("foo", "bar");
}
return foo.toString();
}
}