displaystring.java

无线网络管理

}

public String toInternationalDisplayString(byte[] value)
{
    // I'm expecting Unicode, so this should work with a 'normal' String
    String ret = null;
    try
    {
        ret = new String(value, "UTF-8");
    }
    catch (java.io.UnsupportedEncodingException exc)
    {
        ret = new String(value);
    }
    return ret;
}

/**
 * Implementing the Observer interface. Receiving the response from 
 * the Pdu.
 *
 * @param obs the Pdu variable
 * @param ov the varbind
 *
 * @see uk.co.westhawk.snmp.stack.GetPdu
 * @see uk.co.westhawk.snmp.stack.SetPdu
 * @see uk.co.westhawk.snmp.stack.varbind
 */
public void update(Observable obs, Object ov)
{
    pduInFlight = false;

    // TODO: invokeLater
    setMessage("Received answer");
    if (pdu.getErrorStatus() != AsnObject.SNMP_ERR_NOERROR)
    {
        setErrorMessage(pdu.getErrorStatusString());
    }
    else
    {
        try
        {
            varbind[] vars = pdu.getResponseVarbinds();
            varbind var = vars[0];
            if (var != null)
            {
                AsnObjectId oid = var.getOid();
                toid.setText(oid.toString());

                AsnObject obj = var.getValue();
                if (obj instanceof AsnOctets)
                {
                    AsnOctets oct = (AsnOctets) obj;
                    tvalue.setText(oct.toString(this));
                }
                else
                {
                    tvalue.setText(obj.toString());
                }
            }
        }
        catch(uk.co.westhawk.snmp.stack.PduException exc)
        {
            System.out.println("update(): PduException " 
                  + exc.getMessage());
        }
    }
    setButton.setEnabled(true);
    getButton.setEnabled(true);
    getNextButton.setEnabled(true);
}

public void setErrorMessage(String message)
{
    setMessage(message, true);
}

public void setMessage(String message)
{
    setMessage(message, false);
}

public void setMessage(String message, boolean isError)
{
    lmessage.setText(message);
    Color c = Color.white;
    if (isError)
    {
        c = Color.red;
    }
    lmessage.setBackground(c);
}

private void makeLayout(String host, String oid, int port, String com,
String value)
{
    JLabel lhost, loid, lport, lcom, lvalue, lversion;

    // panel for the host, etc
    lhost   = new JLabel("Host: ");
    lport   = new JLabel("Port: ");
    lcom    = new JLabel("Community: ");
    loid    = new JLabel("OID: ");
    lvalue  = new JLabel("Value: ");
    lversion = new JLabel("Version: ");

    thost   = new JTextField(host);
    tport   = new JTextField(String.valueOf(port));
    tcom    = new JTextField(com);
    toid    = new JTextField(oid);
    tvalue  = new JTextField(value);

    snmpVersion = new JComboBox();
    snmpVersion.addItem("v2c");
    snmpVersion.addItem("v1");

    GridBagLayout hostLayout = new GridBagLayout();
    JPanel hostPanel = new JPanel();
    hostPanel.setLayout(hostLayout);
    hostPanel.add(lhost,
        getGridBagConstraints2(0, 0, 1, 1, 0.0, 0.1,
            GridBagConstraints.WEST, GridBagConstraints.BOTH,
            new Insets(2, 2, 2, 2), 0, 0));
    hostPanel.add(thost,
        getGridBagConstraints2(1, 0, 1, 1, 1.0, 0.1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));

    hostPanel.add(lport,
        getGridBagConstraints2(0, 1, 1, 1, 0.0, 0.1,
            GridBagConstraints.WEST, GridBagConstraints.BOTH,
            new Insets(2, 2, 2, 2), 0, 0));
    hostPanel.add(tport,
        getGridBagConstraints2(1, 1, 1, 1, 1.0, 0.1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));

    hostPanel.add(lcom,
        getGridBagConstraints2(0, 2, 1, 1, 0.0, 0.1,
            GridBagConstraints.WEST, GridBagConstraints.BOTH,
            new Insets(2, 2, 2, 2), 0, 0));
    hostPanel.add(tcom,
        getGridBagConstraints2(1, 2, 1, 1, 1.0, 0.1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));

    hostPanel.add(loid,
        getGridBagConstraints2(0, 3, 1, 1, 0.0, 0.1,
            GridBagConstraints.WEST, GridBagConstraints.BOTH,
            new Insets(2, 2, 2, 2), 0, 0));
    hostPanel.add(toid,
        getGridBagConstraints2(1, 3, 1, 1, 1.0, 0.1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));

    hostPanel.add(lvalue,
        getGridBagConstraints2(0, 4, 1, 1, 0.0, 0.1,
            GridBagConstraints.WEST, GridBagConstraints.BOTH,
            new Insets(2, 2, 2, 2), 0, 0));
    hostPanel.add(tvalue,
        getGridBagConstraints2(1, 4, 1, 1, 1.0, 0.1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));

    hostPanel.add(lversion,
        getGridBagConstraints2(0, 5, 1, 1, 0.0, 0.1,
            GridBagConstraints.WEST, GridBagConstraints.BOTH,
            new Insets(2, 2, 2, 2), 0, 0));
    hostPanel.add(snmpVersion,
        getGridBagConstraints2(1, 5, 1, 1, 1.0, 0.1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));



    // panel for the buttons
    setButton = new JButton ("Set");
    getButton = new JButton ("Get");
    getNextButton = new JButton ("GetNext");

    GridBagLayout buttonLayout = new GridBagLayout();
    JPanel buttonPanel = new JPanel();
    buttonPanel.setLayout(buttonLayout);
    buttonPanel.add(setButton,
        getGridBagConstraints2(0, 0, 1, 1, 0.3, 1.0,
            GridBagConstraints.WEST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));
    buttonPanel.add(getButton,
        getGridBagConstraints2(1, 0, 1, 1, 0.3, 1.0,
            GridBagConstraints.CENTER, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));
    buttonPanel.add(getNextButton,
        getGridBagConstraints2(2, 0, 1, 1, 0.3, 1.0,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));
               
    
    // the whole panel
    lmessage = new JLabel("");
    lmessage.setBackground(Color.white);


    GridBagLayout thisLayout = new GridBagLayout();
    this.setLayout(thisLayout);
    this.add(hostPanel,
        getGridBagConstraints2(0, 0, 1, 1, 1.0, 0.3,
            GridBagConstraints.CENTER, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));

    this.add(buttonPanel,
        getGridBagConstraints2(0, 1, 1, 1, 1.0, 0.3,
            GridBagConstraints.CENTER, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));

    this.add(lmessage,
        getGridBagConstraints2(0, 2, 1, 1, 1.0, 0.3,
            GridBagConstraints.CENTER, GridBagConstraints.BOTH,
            new Insets(0, 0, 0, 0), 0, 0));


    setButton.addActionListener(this);
    getButton.addActionListener(this);
    getNextButton.addActionListener(this);
}


public static GridBagConstraints getGridBagConstraints2(
        int x, int y, int w, int h, double wx, double wy,
        int anchor, int fill,
        Insets ins, int ix, int iy)
{
    GridBagConstraints gc = new GridBagConstraints();
    gc.gridx = x;
    gc.gridy = y;
    gc.gridwidth = w;
    gc.gridheight = h;
    gc.weightx = wx;
    gc.weighty = wy;
    gc.anchor = anchor;
    gc.fill = fill;
    gc.insets = ins;
    gc.ipadx = ix;
    gc.ipady = iy;

    return gc;
}



public static void main(String[] args)
{
    String propFileName = null;
    if (args.length > 0)
    {
        propFileName = args[0];
    }
    DisplayString application = new
    DisplayString(propFileName);

    JFrame frame = new JFrame();
    frame.setTitle(application.getClass().getName());
    frame.getContentPane().add(application, BorderLayout.CENTER);
    application.init();
    frame.addWindowListener(new WindowAdapter()
    {
        public void windowClosing(WindowEvent e)
        {
            System.exit(0);
        }
    });
    frame.setSize(new Dimension(500, 200));
    frame.setVisible(true);
}

}