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 Controller; import Model.Customers; import Model.Products; import dao.CartDao; import dao.CustomerDAO; import entity.Cart; import entity.Customer; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Hashtable; import java.util.Iterator; import java.util.List; 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.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; /** * * @author phuoc */ public class ControllerCustomers 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 action = request.getParameter("action"); if (action.equals("Login")) { String user = request.getParameter("txtId"); String pass = request.getParameter("txtpass"); Customers ct = new Customers(); String anh = ct.anh(user); boolean check = ct.checkLogin(user, pass); String url = "error.jsp"; if (check) { if (ct.role(user)) { RequestDispatcher rd = request.getRequestDispatcher("Admin.jsp"); rd.forward(request, response); } else { url = "index_Cus_2.jsp"; HttpSession session = request.getSession(true); session.setAttribute("User", user); session.setAttribute("Image", anh); // <% CartDao listsp = new CartDao(); List<Cart> list = CartDao.layDanhSachCart(user); session.setAttribute("list", list); // %> } } RequestDispatcher rd = request.getRequestDispatcher(url); rd.forward(request, response); } else if (action.equals("FIND")) { String username = request.getParameter("txtusername"); CustomerDAO cusdao = new CustomerDAO(); List<Customer> list = new ArrayList<Customer>(); list = cusdao.layDanhSachKhachHang(username); request.setAttribute("listKH", list); RequestDispatcher rd = request.getRequestDispatcher("CustomerDao.jsp"); rd.forward(request, response); } else if (action.equals("DELETE")) { String username = request.getParameter("txtusername"); boolean delete = CustomerDAO.XoaKhachHang(username); if (delete) { RequestDispatcher rd = request.getRequestDispatcher("CustomerDao.jsp"); rd.forward(request, response); } } else if (action.equals("Edit")) { String username = request.getParameter("txtusername"); String password = request.getParameter("txtpassword"); String hoten = request.getParameter("txthoten"); String gioitinh = request.getParameter("txtgioitinh"); String email = request.getParameter("txtemail"); String role = request.getParameter("txtrole"); String anh = request.getParameter("txtanh"); Customer cus = new Customer(username, password, hoten, gioitinh, email, role, anh); request.setAttribute("Cus", cus); RequestDispatcher rd = request.getRequestDispatcher("editCustomer.jsp"); rd.forward(request, response); } } catch (Exception e) { e.printStackTrace(); } } // <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 { boolean isMultipart = ServletFileUpload.isMultipartContent(request); if (!isMultipart) { } else { FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); List items = null; try { items = upload.parseRequest(request); } catch (Exception e) { e.printStackTrace(); } Iterator iter = items.iterator(); Hashtable params = new Hashtable(); String fileName = null; while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); if (item.isFormField()) { params.put(item.getFieldName(), item.getString()); } else { try { String itemName = item.getName(); fileName = itemName.substring(itemName.lastIndexOf("\\") + 1); String RealPath = getServletContext().getRealPath("/") + "upload\\" + fileName; String username = (String) params.get("txtusername"); String password = (String) params.get("txtpassword"); String hoten = (String) params.get("txthoten"); String gioitinh = (String) params.get("txtgioitinh"); String email = (String) params.get("txtemail"); String role = (String) params.get("txtrole"); String anh = (String) params.get("txtanh"); //Update product if (fileName.equals("")) { Customer Cus = new Customer(username, password, hoten, gioitinh, email, role, anh); CustomerDAO.SuaThongTinKhachHang(Cus); RequestDispatcher rd = request.getRequestDispatcher("CustomerDao.jsp"); rd.forward(request, response); } else { // bat dau ghi file File savedFile = new File(RealPath); item.write(savedFile); //ket thuc ghi Customer Cus = new Customer(username, password, hoten, gioitinh, email, role, "upload\\" + fileName); CustomerDAO.SuaThongTinKhachHang(Cus); RequestDispatcher rd = request.getRequestDispatcher("CustomerDao.jsp"); rd.forward(request, response); } } catch (Exception e) { System.out.println(e); RequestDispatcher rd = request.getRequestDispatcher("InformationError.jsp"); rd.forward(request, response); } } } } } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }