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04.26.2006 at 12:07AM PDT, ID: 21827711
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8.0

MVC

Asked by aannan in Java Server Pages (JSP)

Tags: ,

Hi,
I am trying to implement MVC to write sort of a quiz application. Currently, I have a couple of text files with questions and players with their scores. At the moment I been able to read the players textfile and put it into a hashmap object which will be displayed on the login page.
At the login page the user will enter a username, if already in the hashmap then user is not allowed to play otherwise the first set of questions are loaded.

this is the code that i currently have for my servlet:
=======================


import java.io.IOException;
//import java.util.HashMap;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//import javax.servlet.http.HttpSession;

 public class LoadPage extends HttpServlet {
 
      
      
      public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
            String data = Util.readPlayers(this, "/players.txt").toString();
                  getServletContext().setAttribute("message" , data);
                  request.getRequestDispatcher("/Login.jsp").forward(request, response);

      }                      

}

this is the readplayers method:
==================
public class Util {

      static HashMap readPlayers(HttpServlet srv, String fname) {
            InputStream is = srv.getServletContext().getResourceAsStream(fname);
            Scanner in = new Scanner(is);
            
            HashMap hm = new HashMap();
            String line;
            
            while (in.hasNext()) {
                  line = in.nextLine();
                  StringTokenizer st = new StringTokenizer(line);
                  
            String name = st.nextToken();
            String score = st.nextToken();
            hm.put(name,score);
            }
            
            return hm;
      }

============================

1. I am having problems displaying the contents of the hashmap on the login page
2. Also how do i read from the questions file? do i use a bean? and how do i write to the playersfile.

this is just the beginning, i know i will have more questions which i will post later. Please help
Thanks
   
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About this solution

Zone: Java Server Pages (JSP)
Tags: mvc, setattribute
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Solution Provided By: fargo
Participating Experts: 3
Solution Grade: A
 
 
[+][-]04.26.2006 at 03:24AM PDT, ID: 16542280

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