/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.sql.DriverManager;
import java.sql.Statement;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
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;

/**
 *
 * @author Ricardo Costa
 */
@WebServlet(name = "testa", urlPatterns = {"/testa"})
public class testa extends HttpServlet {

    /**
     * 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, SQLException {
       response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

       try {
        Class.forName("org.postgresql.Driver");
        } catch (ClassNotFoundException cnfe) {
        out.println("Erro do carregamento: " + cnfe.getMessage());
        }

        try {

        String hostname = "localhost";
        String port = "5432";
        String dbname = "geek";
        String url = "jdbc:postgresql://" + hostname + ":" + port + "/" + dbname;
        String user = "postgres";
        String password="IYOvfj432";


        Connection con=DriverManager.getConnection(url, user, password);
        Statement st=con.createStatement();
        ResultSet rs = st.executeQuery("SELECT * FROM utilizadores");

         String Nome = "jj";


     //   st.executeUpdate("INSERT INTO utilizadores VALUES('"+Nome+"')");


        ArrayList utilizadores = new ArrayList();


        while (rs.next())
        {
            ArrayList dados = new ArrayList ();

            for (int i=1;i<5;i++){

                dados.add(rs.getString(i));
            }

           utilizadores.add(dados);
        }


        request.setAttribute("utilizadores", utilizadores);
        request.setAttribute("hello", "hello");
       request.getRequestDispatcher("index.jsp").forward(request, response);
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * 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 {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(testa.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * 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 {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(testa.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}