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. */ import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import model.AreaMaster; import model.CityMaster; import model.StateMaster; 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; import util.NewHibernateUtil; /** * * @author rushin */ public class getarea 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 { SessionFactory sf = NewHibernateUtil.getSessionFactory(); Session ss = sf.openSession(); Transaction tr = ss.beginTransaction(); int cityid = Integer.parseInt(request.getParameter("city")); //out.print(cityid); CityMaster cm = new CityMaster(); cm.setCityId(cityid); Criteria cr = ss.createCriteria(AreaMaster.class); cr.add(Restrictions.eq("cityId", cm)); // cr.add(Restrictions.eq("sId",sm)); ArrayList<AreaMaster> ctlist = (ArrayList<AreaMaster>) cr.list(); for (int i = 0; i < ctlist.size(); i++) { AreaMaster am = ctlist.get(i); String arname = am.getAreaName(); System.out.println("-------------getarea" + arname); System.out.println("------------- " + am.getAreaId()); out.print("<option value=" + am.getAreaId() + ">" + arname + "</option>"); } tr.commit(); ; } catch (HibernateException e) { out.print(e.getMessage()); } } // <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> }