API tools faq
paste
giangnhauqe

servlet Login

giangnhauqe
Jun 15th, 2016
76
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
Java 4.54 KB | None | 0 0
raw download clone embed print report
  1. /*
  2.  * To change this license header, choose License Headers in Project Properties.
  3.  * To change this template file, choose Tools | Templates
  4.  * and open the template in the editor.
  5.  */
  6. package apt;
  7.  
  8. import java.io.IOException;
  9. import java.io.PrintWriter;
  10. import java.util.ArrayList;
  11. import javax.servlet.ServletException;
  12. import javax.servlet.http.HttpServlet;
  13. import javax.servlet.http.HttpServletRequest;
  14. import javax.servlet.http.HttpServletResponse;
  15.  
  16. /**
  17.  *
  18.  * @author Giang Thao
  19.  */
  20. public class NewServlet extends HttpServlet {
  21.  
  22.     /**
  23.      * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
  24.      * methods.
  25.      *
  26.      * @param request servlet request
  27.      * @param response servlet response
  28.      * @throws ServletException if a servlet-specific error occurs
  29.      * @throws IOException if an I/O error occurs
  30.      */
  31.     protected void processRequest(HttpServletRequest request, HttpServletResponse response)
  32.             throws ServletException, IOException {
  33.         response.setContentType("text/html;charset=UTF-8");
  34.         try (PrintWriter out = response.getWriter()) {
  35.             /* TODO output your page here. You may use following sample code. */
  36.             String user = request.getParameter("user");
  37.             String pass = request.getParameter("password");
  38.             ArrayList<User> lstUser = new ArrayList<>();
  39.             User u1 = new User();
  40.             u1.setUserName("Admin1");
  41.             u1.setPassword("1111");
  42.             lstUser.add(u1);
  43.             User u2 = new User();
  44.             u2.setUserName("Admin2");
  45.             u2.setPassword("2222");
  46.             lstUser.add(u2);
  47.             User u3 = new User();
  48.             u3.setUserName("Admin3");
  49.             u3.setPassword("3333");
  50.             lstUser.add(u3);
  51.             User u4 = new User();
  52.             u4.setUserName("Admin4");
  53.             u4.setPassword("4444");
  54.             lstUser.add(u4);
  55.             User u5 = new User();
  56.             u5.setUserName("Admin5");
  57.             u5.setPassword("5555");
  58.             lstUser.add(u5);
  59.             for (User u : lstUser) {
  60.                 if (u.getUserName().equalsIgnoreCase(user.trim()) &&
  61.                         u.getPassword().equals(pass.trim())) {
  62.                     out.println("<!DOCTYPE html>");
  63.                     out.println("<html>");
  64.                     out.println("<head>");
  65.                     out.println("<title>Login</title>");
  66.                     out.println("</head>");
  67.                     out.println("<body style=\"text-align: center\" >");
  68.                     out.println("<h1>ĐĂNG NHẬP THÀNH CÔNG </h1>");
  69.                     out.println("<h3>User Name  :" + user+"</h3>");
  70.                     out.println("<h3>Password   :" + pass+"<h3>");
  71.                     out.println("</body>");
  72.                     out.println("</html>");
  73.                     request.setAttribute("erro", null);
  74.                     break;
  75.                 } else {
  76.                     request.setAttribute("erro", "LỖI ĐĂNG NHẬP");
  77.                    
  78.                 }
  79.             }
  80.             if(request.getAttribute("erro")!=null){
  81.                 request.getRequestDispatcher("Login.jsp").forward(request, response);
  82.             }
  83.  
  84.         }
  85.     }
  86.  
  87.     // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
  88.     /**
  89.      * Handles the HTTP <code>GET</code> method.
  90.      *
  91.      * @param request servlet request
  92.      * @param response servlet response
  93.      * @throws ServletException if a servlet-specific error occurs
  94.      * @throws IOException if an I/O error occurs
  95.      */
  96.     @Override
  97.     protected void doGet(HttpServletRequest request, HttpServletResponse response)
  98.             throws ServletException, IOException {
  99.         processRequest(request, response);
  100.     }
  101.  
  102.     /**
  103.      * Handles the HTTP <code>POST</code> method.
  104.      *
  105.      * @param request servlet request
  106.      * @param response servlet response
  107.      * @throws ServletException if a servlet-specific error occurs
  108.      * @throws IOException if an I/O error occurs
  109.      */
  110.     @Override
  111.     protected void doPost(HttpServletRequest request, HttpServletResponse response)
  112.             throws ServletException, IOException {
  113.         processRequest(request, response);
  114.     }
  115.  
  116.     /**
  117.      * Returns a short description of the servlet.
  118.      *
  119.      * @return a String containing servlet description
  120.      */
  121.     @Override
  122.     public String getServletInfo() {
  123.         return "Short description";
  124.     }// </editor-fold>
  125.  
  126. }
Add Comment
Please, Sign In to add comment
Public Pastes
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!