Java EE Servlet and REST path clashing - rest

Question

I am trying to write a Java web application that provides both HTML and REST interface. I would like to create a servlet that would provide the HTML interface using JSP, but data should also be accessible via REST.
What I already have is something like this for the REST:
#javax.ws.rs.Path("/api/")
public class RestAPI {
... // Some methods
}
and
#WebServlet("/servlet")
public class MyServlet extends HttpServlet {
#Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.getWriter().write("Howdy at ");
}
}
Now, when I change the #WebServlet("/servlet") annotation to #WebServlet("/"), the servlet stops working probably due to path clash with the REST.
How can I provide REST on specific path and HTML in the root?
Thank you,
Lukas Jendele

Answer 1

This seems to work OK for me. What I did:
In my pom.xml, I have a dependency on org.wildfly.swarm:undertow (for Servlet API) and org.wildfly.swarm:jaxrs (for JAX-RS). And of course the Swarm Maven plugin.
For servlet, I have just this one class:
#WebServlet("/")
public class HelloServlet extends HttpServlet {
#Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.getWriter().println("Hello from servlet");
}
}
For JAX-RS, I have these 2 classes:
#ApplicationPath("/api")
public class RestApplication extends Application {
}
#Path("/")
public class HelloResource {
#GET
public Response get() {
return Response.ok().entity("Hello from API").build();
}
}
To test, I run curl http://localhost:8080/ and curl http://localhost:8080/api. Results are as expected. (Maybe my example is too simple?)