/** * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { if (bo == null) { bo = new BlocoBo(); } String nome = request.getParameter("descricao"); Bloco bloco = new Bloco(); bloco.setNome(nome); Map<String, String> resultado = new HashMap<>(); try { bo.cadastrarBloco(bloco); request.getSession().setAttribute("blocos", bo.listarTodos()); resultado.put("resultado", "Operação realizada com sucesso"); } catch (IllegalArgumentException e) { resultado.put("erro", e.getMessage()); } String json = new Gson().toJson(resultado); response.setContentType("application/json"); response.setCharacterEncoding("UTF-8"); response.getWriter().write(json); }