Send an object from client to server always a button

What I need is to send an object from client to server, but I need server wait for another object is sent. What I have, it's the JFrame where you put the name and surname, then you create a user with these details object and you press the button send this object on the server. Just, I can't keep the connection because when I send the first object, the server does not wait for another button click and survey EOFexception. Creating the while loop is useful both because it continues to send the same object again and again. The code is here
public class ClientFrame extends JFrame {

    private JButton btnSend;
    private JTextField txfName;
    private JTextField txfSurname;

    public ClientFrame() {
        this.setTitle(".. ");

        Container con = this.getContentPane();
        con.setLayout(new BorderLayout());

        txfName = new JTextField("name");
        txfSurname = new JTextField("surname");

        btnSend = new JButton(new AbstractAction() {

            @Override
            public void actionPerformed(ActionEvent e) {
                SSLSocketFactory f =
                        (SSLSocketFactory) SSLSocketFactory.getDefault();
                try {
                    SSLSocket c =
                            (SSLSocket) f.createSocket("localhost", 8888);

                    c.startHandshake();

                    OutputStream os = c.getOutputStream();
                    ObjectOutputStream oos = new ObjectOutputStream(os);
                    InputStream is = c.getInputStream();
                    ObjectInputStream ois = new ObjectInputStream(is);

                    
                    boolean done = false;
                    while (!done) {
                        String first = txfName.getText();
                        String last = txfSurname.getText();
                        User u = new User();

                        u.setFirstName(first);
                        u.setLastName(last);
                        oos.reset();
                        oos.writeObject(u);

                        String str = (String) ois.readObject();
                        if (str.equals("rcvdOK")) {
                            System.out.println("received on the server side");
                        } else if (str.equals("ERROR")) {
                            System.out.println("ERROR");
                        }
                    }




                    //oos.writeObject(confirmString);

                    oos.close();
                    os.close();
                    c.close();

                } catch (ClassNotFoundException ex) {
                    Logger.getLogger(ClientFrame.class.getName()).log(Level.SEVERE, null, ex);
                } catch (IOException ex) {
                    System.err.println(ex.toString());
                }
            }
        });
        btnSend.setText("send object");
        con.add(btnSend, BorderLayout.PAGE_START);
        con.add(txfName, BorderLayout.CENTER);
        con.add(txfSurname, BorderLayout.PAGE_END);
        this.pack();
        setSize(200, 150);
        setVisible(true);
    }
}

public class TestServer {

    public static void main(String[] args) {
        
        try {
            KeyStore ks = KeyStore.getInstance("JKS");
            ks.load(new FileInputStream(ksName), ksPass);
            KeyManagerFactory kmf =
                    KeyManagerFactory.getInstance("SunX509");
            kmf.init(ks, ctPass);
            SSLContext sc = SSLContext.getInstance("TLS");
            sc.init(kmf.getKeyManagers(), null, null);
            SSLServerSocketFactory ssf = sc.getServerSocketFactory();
            SSLServerSocket s = (SSLServerSocket) ssf.createServerSocket(8888);
            printServerSocketInfo(s);
            SSLSocket c = (SSLSocket) s.accept();
 

            InputStream is = c.getInputStream();
            ObjectInputStream ois = new ObjectInputStream(is);
            OutputStream os = c.getOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(os);
            boolean done = false;
            User u;
            
              while(!done){
                  
                
                u = (User) ois.readObject();
                String confirmString = "rcvdOK";
                String errorString = "ERROR";
                if (u != null) {
                    System.out.println(u.getFirstName() + " " + u.getLastName());
                    oos.writeObject(confirmString);
                } else if (u == null) {
                    oos.writeObject(errorString);
                }
                
                
            
            }

            is.close();
            s.close();
            c.close();

        } catch (Exception e) {
            
                System.err.println(e.toString());
            
            
        }
    }

   
}
Thanks for any help, btw, it does not need to be over ssl, the problem would be the same as using the http protocol. Please someone help me :)

Published by: Vencicek on 7.5.2012 02:19

Published by: EJP 05/07/2012 19:53

Published by: Vencicek on 7.5.2012 03:36

I responded to that. Do not call the methods of networking in the thread of events, or in a constructor.

Tags: Java

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