findport.java

基于JAVA的端口扫描程序

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import javax.swing.*;

class findport extends JFrame  implements  ActionListener {
Panel p=new Panel();
Panel p1=new Panel();
JButton checkport=new JButton ("开始端口检验");
Socket so;
int n1,n2;
InetAddress addr;
TextField tex =new TextField(15),
t1=new  TextField ("22"),
t2=new TextField("24") ;
JLabel l=new JLabel("     请输入ip"),
a=new JLabel("端口范围"),
b=new JLabel();
TextArea te=new TextArea(60,40);
JScrollPane  js=new JScrollPane(te);

public findport(){
super("端口检验");
        setSize(250,350);
        p1.setLayout(new GridLayout(3,2));
        p1.add(l);p1.add(tex);p1.add(a);p1.add(b);p1.add(t1);p1.add(t2);
        
        p.add(p1);
  
        p.add(checkport);
              p.add(te);
        p.add(js);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        checkport.addActionListener(this);
        tex.addActionListener(this);
        this.getContentPane().add(p);
         try{
            UIManager.setLookAndFeel(
            UIManager.getSystemLookAndFeelClassName());
            SwingUtilities.updateComponentTreeUI(this);}
        catch(Exception e){
            e.printStackTrace();}

        show();}
 public static void main(String args[]) {
        new findport().show();
    }
public void actionPerformed(ActionEvent e) {Object soo=e.getSource();

if (soo==checkport){
    n1=Integer.parseInt(t1.getText()); n2=Integer.parseInt(t2.getText());
     try
       {  addr=InetAddress.getByName(tex.getText());
          
       }
       catch(IOException Y){
          
       };
   
   for (int port=n1;port<=n2;port++) {
      
           
        
 try {
 
       Socket s=new Socket(addr,port); te.append("....端口: "+String.valueOf(port)+"\n");  
    
             }
             catch(IOException ee){
                     }              
    
     
           }
        
            
      
      }
   }
 }