Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package control.UsuariosServlets; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import modelo.UsuariosManagers.Usuarios; import org.json.simple.JSONObject; /** * * @author illustrato */ @WebServlet(name = "ActualizarUsuarios", urlPatterns = { "/ActualizarUsuarios" }) public class ActualizarUsuarios extends HttpServlet { /** * Handles the HTTP <code>GET</code> method. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } /** * Handles the HTTP <code>POST</code> method. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Integer respuesta = 0; try { String usuario = request.getParameter("descripcion"); Integer rol = Integer.parseInt(request.getParameter("rol")); Integer codigo = Integer.parseInt(request.getParameter("codigo")); Usuarios manager = new Usuarios(); respuesta = manager.actualizarUsuarios(usuario, rol, codigo); //Armamos la respuesta JSON y la enviamos response.setContentType("application/json"); JSONObject jsonObject = new JSONObject(); jsonObject.put("error", respuesta); response.getWriter().write(jsonObject.toString()); } catch (Exception ex) { //Armamos la respuesta JSON y la enviamos response.setContentType("application/json"); JSONObject jsonObject = new JSONObject(); jsonObject.put("error", respuesta); response.getWriter().write(jsonObject.toString()); } } }