Building Server with Undertow

App.java

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

import javax.servlet.ServletException;

import org.glassfish.jersey.servlet.ServletContainer;

import io.undertow.Handlers;
import io.undertow.Undertow;
import io.undertow.server.handlers.PathHandler;
import io.undertow.servlet.Servlets;
import io.undertow.servlet.api.DeploymentInfo;
import io.undertow.servlet.api.DeploymentManager;

public class App {

	private static Undertow server;

	public static void main(String[] args) throws ServletException {
		startContainer(9090);
	}

	public static void stopContainer() {
		server.stop();
	}

	public static void startContainer(int port) throws ServletException {
		io.undertow.servlet.api.ServletContainer servletContainer = Servlets.defaultContainer();

		DeploymentInfo di = Servlets.deployment().setClassLoader(App.class.getClassLoader()).setContextPath("/jaxrx")
				.setDeploymentName("jaxrx-demo-1.0")
				.addServlets(servlet("jerseyServlet", ServletContainer.class).setLoadOnStartup(1)
						.setAsyncSupported(true).addInitParam("javax.ws.rs.Application", JerseyApp.class.getName())
						.addMapping("/api/*"))
				.addWelcomePage("index.html");

		DeploymentManager manager = servletContainer.addDeployment(di);

		manager.deploy();
		PathHandler path = Handlers.path(Handlers.redirect("/jaxrx")).addPrefixPath("/jaxrx", manager.start());

		server = Undertow.builder().addHttpListener(port, "localhost").setHandler(path).build();

		server.start();
	}
}
	private static Undertow server;

	public static void main(String[] args) throws ServletException {
		startContainer(9090);
	}

	public static void stopContainer() {
		server.stop();
	}

	public static void startContainer(int port) throws ServletException {
		io.undertow.servlet.api.ServletContainer servletContainer = Servlets.defaultContainer();

		DeploymentInfo di = Servlets.deployment().setClassLoader(App.class.getClassLoader()).setContextPath("/jaxrx")
				.setDeploymentName("jaxrx-demo-1.0")
				.addServlets(servlet("jerseyServlet", ServletContainer.class).setLoadOnStartup(1)
						.setAsyncSupported(true).addInitParam("javax.ws.rs.Application", JerseyApp.class.getName())
						.addMapping("/api/*"))
				.addWelcomePage("index.html");

		DeploymentManager manager = servletContainer.addDeployment(di);

		manager.deploy();
		PathHandler path = Handlers.path(Handlers.redirect("/jaxrx")).addPrefixPath("/jaxrx", manager.start());

		server = Undertow.builder().addHttpListener(port, "localhost").setHandler(path).build();

		server.start();
	}
}

build.gradle

group 'com.dgstack.eg.jaxrs'
version '1.0'

apply plugin: 'java'
apply plugin: 'war'
apply plugin: 'application'

sourceCompatibility = 1.8

mainClassName = 'com.dgstack.eg.jaxrx.App'

repositories {
    mavenCentral()
}

dependencies {
	//Jersey servlet dependencies
	compile group: 'org.glassfish.jersey.containers', name: 'jersey-container-servlet', version: '2.25'	
    //Undertow dependencies
	compile group: 'io.undertow', name: 'undertow-core', version: '1.4.7.Final'
	compile group: 'io.undertow', name: 'undertow-servlet', version: '1.4.7.Final'
	//J2ee servlet dependencies
	compile group: 'javax.servlet', name: 'javax.servlet-api', version: '3.1.0'

}

task runApp(type: JavaExec) {
  classpath = sourceSets.main.runtimeClasspath
  main = 'com.dgstack.eg.jaxrx.App'
}