final Class<?> clazz = classloader.loadClass(servletClass);
ServletBuilder servlet = new ServletBuilder();
servlet.setServletName(servletName);
servlet.setServlet((Servlet) clazz.newInstance());
servlet.setServletClass(clazz);
servlet.addUrlMapping(urlPattern);
builder.addServlet(servlet);
deployment = host.addWebDeployment(builder);
deployment.create();