我的代码应该捕获网络流量并将其显示在 textarea 上,但它没有这样做。请查看代码并检查是否有任何更正。
public class NewClass {
public static JTextArea textarea = new JTextArea();
NewClass() throws IOException{
JButton capture = new JButton("Capture");
JFrame frame = new JFrame();
JScrollPane scroll;
NetworkInterface[] NI= JpcapCaptor.getDeviceList();
int INDEX=0;
JpcapCaptor JPCAP = JpcapCaptor.openDevice(NI[INDEX], 65536, false, 20);
frame.setSize(700,500);
frame.setLocation(200,200);
frame.getContentPane().setLayout(null);
frame.setBackground(Color.yellow);
textarea.setEditable(false);
textarea.setFont(new Font("Tahoma",0,14));
textarea.setForeground(Color.RED);
textarea.setLineWrap(true);
//textarea.setBackground(Color.WHITE);
scroll = new JScrollPane();
scroll.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scroll.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
scroll.setViewportView(textarea);
frame.getContentPane().add(scroll);
scroll.setBounds(10,16,740,290);
capture.setBackground(Color.RED);
capture.setForeground(Color.GREEN);
frame.getContentPane().add(capture);
handler ob = new handler();
capture.addActionListener(ob);
capture.setBounds(100, 400, 90, 25);
frame.setVisible(true);
}
public class handler implements ActionListener{
public void actionPerformed(ActionEvent Event){
class Print implements PacketReceiver{
public void receivePacket(Packet packet){
String info = packet.toString();
textarea.append(info);
//System.out.println(packet.toString());
}
}
}
}