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 java.sql.SQLException; import java.util.logging.Level; import java.util.logging.Logger; 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.Roles; import org.json.simple.JSONArray; /** * * @author illustrato */ @WebServlet(name = "SeleccionarRoles", urlPatterns = { "/SeleccionarRoles" }) public class SeleccionarRoles 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 { Roles manager = new Roles(); JSONArray jsonArray; try { jsonArray = manager.getRoles("", "", ""); response.setContentType("application/json"); for (Object jsonObject : jsonArray) { response.getWriter().write(jsonObject.toString()); } } catch (SQLException ex) { } } }