@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

    output = resp.getWriter();

  String nickname = req.getParameter("nickName");
  String  firstname = req.getParameter("firstName");
  String lastname = req.getParameter("lastName");
  String email = req.getParameter("email");
  String password = req.getParameter("password");
  String customerType = req.getParameter("customerType");

    User user = new User(nickname,firstname,lastname,email,password,customerType);

    resp.setHeader("Access-Control-Allow-Origin","*");
    resp.setContentType("application/text");

    output.print(user.toString());