hi All,
I m a student....
I am assigned a project in java course to develop a "Ftp Server using RMI"....

Requirememts:-

Requriments are not so high....
It should be a simple one...
Ftp Server could add, remove, view users and statistics through proper GUIS.....
Ftp Client shloud be logged in, authorized before , through proper GUIS.....server will authorize user through database using JDBC....

Client can download and upload a file from server...

Please send me some alogorithm that how should i start...
Any code example help would be appreciated...
thanx in advance....
bye

Show us some effort from your side first, how would you go about implementing such a project we would like to know that first. Then you could maybe ask us specific questions than "Please send me some algorithm", and we would be glad to help you.

Here is the effort that i have made:plzzzzzzz help me...
the Interface

import java.io.*;
import java.rmi.*;
public interface p extends Remote {
public String sq () throws RemoteException;
public void Login() throws RemoteException;
}
The Implementation


import java.io.*;
import java.rmi.*;
import java.rmi.server.*;
//import java.net.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;


public class pImpl extends UnicastRemoteObject implements p , ActionListener{
pImpl() throws RemoteException
{super();}


public String sq ( ) throws RemoteException{
return "Hello from RMI....s server";
}


//*****************************************
public void Login() throws RemoteException{


f=new JFrame("Student Login");


f.setLayout(new FlowLayout());
tf=new JTextField(20);
p=new JPasswordField(20);
l=new JLabel[2];
b=new JButton[2];


for(int i=0;i<l.length;i++){


l=new JLabel();
b=new JButton();}


l[0].setText("Enter ID:");


l[1].setText("Enter Password:");


b[0].setLabel("Login");
b[1].setLabel("Cancel");


f.add(l[0]);
f.add(tf);
f.add(l[1]);
f.add(p);



for(int i=0;i<b.length;i++){
f.add(b);
b.addActionListener(this);}


f.setVisible(true);
f.setSize(650,600);
f.setResizable(false);


}


public void actionPerformed (ActionEvent e ){
String str;
str=e.getActionCommand();


if(str.equals("Login"))
try{
String login=tf.getText();
String pass=p.getText();
String message = "Error : Invalid username/Password";


dbServer db=new dbServer();


if(db.getLogin(login,pass))
{System.out.println("Yes");
f.setVisible(false);}
else
{


JOptionPane.showMessageDialog(f, message, "Dialog",
JOptionPane.ERROR_MESSAGE);
tf.setText("");
p.setText("");
}



} catch (Exception e1){ e1.printStackTrace();}


else if(str.equals("Cancel"))
{f.setVisible(false);
}
}
JTextField tf ;
JPasswordField p ;
JLabel l[] ;
JButton b[] ;
JFrame f ;
//ObjectOutputStream out;
//ObjectInputStream in;



}

The Server

import java.io.*;
import java.rmi.*;
public class pServer {
public static void main (String o[]){
try {
pImpl ob= new pImpl();
Naming.rebind("rmi://localhost:2005/lahore",ob);
System.out.println ("RMI Server  ready...");
} catch ( Exception e ) {
System.out.println ("Server not ready...");
e.printStackTrace();}



}
}

The databse server with dsn name:u and using access database login

import java.sql.*;



public class dbServer {
dbServer()throws Exception {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("Jdbc:Odbc:u");
st=con.prepareStatement(lgn);


}
public boolean getLogin(String u, String p)throws Exception{
st.setString(1,u);
st.setString(2,p);
rs=st.executeQuery();


if (rs.next())
return true;
else
return false;



}


Connection con;
PreparedStatement st;
ResultSet rs;
String lgn="Select * from login where username = ? and password=?";
}

The Client

import java.rmi.*;
import java.io.*;
public class pClient {
public static void main(String o[]){
try {
p  r= (p)Naming.lookup("rmi://localhost:2005/lahore");


//System.out.println(r.sq());
r.Login();
}
catch (Exception e ) { e.printStackTrace();}
}
}

Edited 3 Years Ago by pritaeas: Fixed formatting

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