@Override
 protected void doPost(HttpServletRequest req, HttpServletResponse resp)
     throws ServletException, IOException {
   String id = req.getParameter("id");
   String name = req.getParameter("name");
   String url = req.getParameter("url");
   Person person = new Person();
   person.setId(id);
   person.setName(name);
   person.setUrl(url);
   personService.addPerson(person);
   resp.sendRedirect("/personui");
 }