UndertowResteasyServer.java

public class UndertowResteasyServer {

    public static void main(String[] args) {
        ResteasyDeployment deployment = new ResteasyDeployment();
        deployment.setApplicationClass(MyRestApplication.class.getName());

        UndertowJaxrsServer server = new UndertowJaxrsServer();
        DeploymentInfo deploymentInfo = server.undertowDeployment(deployment, "/")
            .setClassLoader(UndertowResteasyServer.class.getClassLoader())
            .setContextPath("/api").setDeploymentName("WS");
        server.deploy(deploymentInfo);

        ResourceHandler resourceHandler = new ResourceHandler(new PathResourceManager(
            Paths.get(new File(".").getAbsolutePath()), 100))
            .setDirectoryListingEnabled(true)
            .addWelcomeFiles("index.html");
        server.addResourcePrefixPath("/web", resourceHandler);

        server.start(Undertow.builder().addHttpListener(8080, "0.0.0.0"));
    }

}