LogServ.java Source code

Introduction

Here is the source code for LogServ.java

Source

/*
 * 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.
 */
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
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 model.Doctor;
import model.Lab;
import model.Login;
import model.Patient;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.criterion.Restrictions;

/**
 *
 * @author rishabh
 */
public class LogServ 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 {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {

            String path = "";

            SessionFactory sf = HibernateUtil.getSessionFactory();
            Session ss = sf.openSession();
            Transaction tr = ss.beginTransaction();

            Criteria cr = ss.createCriteria(Login.class);
            cr.add(Restrictions.eq("username", request.getParameter("username")));
            cr.add(Restrictions.eq("password", request.getParameter("password")));

            ArrayList<Login> all = (ArrayList<Login>) cr.list();
            Login l = all.get(0);
            String role = l.getRole();

            HttpSession hs = request.getSession();
            hs.setAttribute("l2", l);

            tr.commit();
            //                Login l1 = (Login)hs.getAttribute("l2");

            if (all.size() == 0) {

                path = "login.jsp";
                out.println("failed");

            } else {
                if (role.equals("patient")) {

                    path = "patienthomepage.jsp";

                } else if (role.equals("doctor")) {

                    Criteria cr1 = ss.createCriteria(Doctor.class);
                    cr1.add(Restrictions.eq("userId", l));
                    ArrayList<Doctor> dList = (ArrayList<Doctor>) cr1.list();
                    Doctor d = dList.get(0);
                    hs.setAttribute("doctor", d);
                    path = "doctorhomepage.jsp";

                } else {
                    Criteria cr1 = ss.createCriteria(Lab.class);
                    cr1.add(Restrictions.eq("userId", l));
                    ArrayList<Lab> lList = (ArrayList<Lab>) cr1.list();
                    Lab L = lList.get(0);
                    hs.setAttribute("lab", L);
                    path = "Labhomepage.jsp";

                }

            }
            // out.println(role);
            // out.print(path);

            RequestDispatcher rd = request.getRequestDispatcher(path);
            rd.forward(request, response);

        }

        catch (HibernateException ex) {
            out.println(ex.getMessage());

        }

        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 {
        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>

}