WadlUndertowConnector.java

package org.jboss.resteasy.wadl;

import io.undertow.servlet.api.DeploymentInfo;
import io.undertow.servlet.api.ServletInfo;
import org.jboss.resteasy.plugins.server.servlet.HttpServlet30Dispatcher;
import org.jboss.resteasy.plugins.server.undertow.UndertowJaxrsServer;
import org.jboss.resteasy.spi.ResteasyDeployment;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;

import static io.undertow.servlet.Servlets.servlet;

/**
 * Created by weli on 7/26/16.
 */
public class WadlUndertowConnector {
    public UndertowJaxrsServer deployToServer(UndertowJaxrsServer server, Class<? extends Application> application) {
        ApplicationPath appPath = application.getAnnotation(ApplicationPath.class);
        String path = "/";
        if (appPath != null) path = appPath.value();

        return deployToServer(server, application, path);
    }

    public UndertowJaxrsServer deployToServer(UndertowJaxrsServer server, Class<? extends Application> application, String contextPath) {
        ResteasyDeployment deployment = new ResteasyDeployment();
        deployment.setApplicationClass(application.getName());

        DeploymentInfo di = server.undertowDeployment(deployment);

        ServletInfo resteasyWadlServlet = servlet("ResteasyWadlServlet", ResteasyWadlServlet.class)
                .setAsyncSupported(false)
                .setLoadOnStartup(1)
                .addMapping("/application.xml");
        di.addServlet(resteasyWadlServlet);

        di.setClassLoader(application.getClassLoader());
        di.setContextPath(contextPath);
        di.setDeploymentName("Resteasy" + contextPath);
        return server.deploy(di);
    }
}