Problem while setting username password to router

Question

Hi,
i am trying to connect to router using java program. i am connecting with out any problem.
while giving the credentials like username and password i can't placing the original username
password.instead some thing is setted.
here is my code
   public class ConnectRouter
    public static void main(String[] args) throws Exception {
    try
    if (args.length != 2) {
    System.err.println("Usage: java router username and  password");
    System.exit(1);
    String password = URLEncoder.encode(args[0], "US-ASCII");
    String username=URLEncoder.encode(args[1],"US-ASCII");
    URL url = new URL("http://192.168.0.75:23");
    URLConnection connection = url.openConnection();
    connection.setDoOutput(true);
        System.out.println("connection obj got");
    PrintWriter out = new PrintWriter(connection.getOutputStream());
    out.println(username);----------------------------------------------------------------------------------------------->passing username
    out.println(password);------------------------------------------------------------------------------------------------>passing password
        Process p = Runtime.getRuntime().exec("cmd /c perl C:\\perlsrc\\uname.pl");
    // out.println(args[0]);
        System.out.println("-----------connected---------------");
    out.close();
    BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    String inputLine;
    while ((inputLine = in.readLine()) != null)
    System.out.println(inputLine);
    in.close();
    }catch(Exception e){e.printStackTrace();}
    }output is as follows:
connection obj got
-----------connected---------------
ÿûÿûÿýÿý
User Access Verification
Username: POST / HTTP/1.1--------------------------------------->here something is placed instead of my username
Password:
% Authentication failed.
Username: Host: 192.168.0.75:23--------------------------------->here something is placed instead of my username
Password:
% Authentication failed.
Username: Connection: keep-alive
Password:
% Authentication failed.
Process exited with exit code 0.
please explain me where i am missing???
Regards,
Nagaraju

Answer 1

Hi ejp,
i done as follows even i am getting same problem
please help me
   public class ConnectRouter extends Authenticator
        static String username,password;
    public static void main(String[] args) throws Exception
        Authenticator.setDefault(new ConnectRouter());
    try
    if (args.length != 2) {
    System.err.println("Usage: java router username and  password");
    System.exit(1);
     password = URLEncoder.encode(args[0], "US-ASCII");
     username=URLEncoder.encode(args[1],"US-ASCII");
    URL url = new URL("http://192.168.0.75:23");
    URLConnection connection = url.openConnection();
    connection.setDoOutput(true);
        System.out.println("connection obj got");
    PrintWriter out = new PrintWriter(connection.getOutputStream());
    out.println(username);
    out.println(password);
        Process p = Runtime.getRuntime().exec("cmd /c perl C:\\perlsrc\\uname.pl");
    // out.println(args[0]);
        System.out.println("-----------connected---------------");
    out.close();
    BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    String inputLine;
    while ((inputLine = in.readLine()) != null)
    System.out.println(inputLine);
    in.close();
    }catch(Exception e){e.printStackTrace();}
    //@ovverriding the getPasswordAuhtentication method
    protected PasswordAuthentication getPasswordAuthentication()
        System.out.println("int the password authentication method");
        return new PasswordAuthentication(username,password.toCharArray());
    }output::
connection obj got
-----------connected---------------
ÿûÿûÿýÿý
User Access Verification
Username: POST / HTTP/1.1--------------------------------------->here something is placed instead of my username
Password:
% Authentication failed.
Username: Host: 192.168.0.75:23--------------------------------->here something is placed instead of my username
Password:
% Authentication failed.
Username: Connection: keep-alive
Password:
% Authentication failed.
Process exited with exit code 0.
please explain me where i am missing again???
Thanks in advance,
Nagaraju.