Java – Jersey JAX-RS registers more controllers on embedded jetty

I’m trying to implement a Restful web service using Jersey JAX-RS.
I embed a Jetty web server and want to register all controllers on it.

I’m based on this example:
https://nikgrozev.com/2014/10/16/rest-with-embedded-jetty-and-jersey-in-a-single-jar-step-by-step/

where EntryPoint is Controller:

@Path("/entry-point")
public class EntryPoint {

@GET
  @Path("test")
  @Produces(MediaType.TEXT_PLAIN)
  public String test() {
    return "Test";
  }
}

This is registered with the key name “jersey.config.server.provider.classnames” as follows:

public class App {

public static void main(String[] args) throws Exception {
    ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
    context.setContextPath("/");

Server jettyServer = new Server(8080);
    jettyServer.setHandler(context);

ServletHolder jerseyServlet = context.addServlet(
         org.glassfish.jersey.servlet.ServletContainer.class, "/*");
    jerseyServlet.setInitOrder(0);

 Tells the Jersey Servlet which REST service/class to load.

jerseyServlet.setInitParameter(
       "jersey.config.server.provider.classnames",
       EntryPoint.class.getCanonicalName());

try {
        jettyServer.start();
        jettyServer.join();
    } finally {
        jettyServer.destroy();
    }
  }
}

How do I register multiple Controllers?

If I add other Controller classes as arguments, I don’t know what key name I have to specify for each Controller class, because only “jersey.config.server.provider.classnames” seems to work and work once.
Thank you.

Because you can only use this property once, you need to use a comma-separated list as the values classOne, classTwo, classThree.

Another option is to use the property jersey.config.server.provider.packages and give it only one package to scan recursively

jerseyServlet.setInitParam(ServerProperties.PROVIDER_PACKAGES, "my.package.to.scan");

See also ServerProperties You can set more properties. The PROVIDER_PACAKGES here is a constant whose string value is jersey.config.server.provider.packages. As with the classnames attribute, there is a constant PROVIDER_CLASSNAMES.

By declaring a package to scan, Jersey scans the package recursively (by default) and registers all annotated @Path and @Provider the classes it finds in the scan.