*/
public class InitListener implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent sce) {
HandlersDispatcher dispatcher = HandlersDispatcher.builder()
.addPost("^/echo$", new JsonTransportHandler(), EchoHandler.class)
.build();
sce.getServletContext().setAttribute("dispatcher", dispatcher);
System.out.println("HandlersDispatcher initialized");
}