Untitled

package asia.uap.JessTechnik;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ResourceBundle;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.mindrot.jbcrypt.BCrypt;

/**
 *
 * @author user
 */
public class User_Login extends HttpServlet {


    String url;
    String user;
    String pass;

    public User_Login(String url, String user, String pass)
    {
        this.url = url;
        this.user = user;
        this.pass= pass;
    }

    public User_Login()
    {
        ResourceBundle sql = ResourceBundle.getBundle("asia.uap.JessTechnik.SQLProperties");
        this.url = sql.getString("url");
        this.user = sql.getString("user");
        this.pass = sql.getString("password");
    }
    /**
     * 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
     */
    Connection con;
    PreparedStatement ps;
    ResultSet rs;
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {


            out.println("<!DOCTYPE html>");
            out.println("<html><head>");
            out.println("<title>Jess Technik User Login</title>");
            out.println("<link rel='StyleSheet' href='CSS/userlogin-design.css' type='text/css'/>");
            out.println("</head>");
            out.println("<body id='userlogin'>");

            Connection conn = null;
            Statement stmt = null;

            try {
                    Class.forName("com.mysql.jdbc.Driver");
                } catch (ClassNotFoundException ex) {
                    ex.printStackTrace();
                    return;
                }

                try {
                      conn = DriverManager.getConnection(url, user, pass);

                      String user = request.getParameter("username");
                      String pass = request.getParameter("password");

                      JessIO action = new JessIO();

                      String UserCheck = action.UserCheck(user);

                      if(UserCheck.equals(user)){

                        ps = conn.prepareStatement("select user_id from User where user_name=?"
                                + "");
                        ps.setString(1, user);
                        rs = ps.executeQuery();

                        int unmeID = 0;
                        if(rs.next()) {
                        unmeID = rs.getInt("user_id");
                        }
                        String verify = action.getAccPass(user);
                        HttpSession userSession = request.getSession();

                        if(BCrypt.checkpw(pass,verify)){
                          userSession.setAttribute("user", user);
                          userSession.setAttribute("unmeID", unmeID);
                       //   userSession.setMaxInactiveInterval(100);
                          RequestDispatcher redirect = request.getRequestDispatcher("do.HomePageData");
                          redirect.include(request,response);
                        }
                        else{
                          out.println("<h4>Invalid password</h4>");
                          RequestDispatcher rdReject = request.getRequestDispatcher("index.jsp");
                          rdReject.include(request,response);
                        }
                      }

                      else{
                          out.println("<h4>Invalid username</h4>");
                          RequestDispatcher rdReject = request.getRequestDispatcher("index.jsp");
                          rdReject.include(request,response);
                      }
                } catch (SQLException e) {
                    out.println(e.toString());
                } finally {
                    try {
                        if (stmt != null) stmt.close();
                        if (conn != null) conn.close();
                    } catch (SQLException ex) {
                        ex.printStackTrace();
                    }
                }
            out.println("</body>");
            out.println("</html>");
        }
    }
    // <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 {
        processRequest(request, response);
    }

    /**
     * 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 {
        processRequest(request, response);
    }

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