JAVA tcp 端口扫描

import java.net.*; import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; class TCPThread extends Thread { public static InetAddress hostAddress; public static int MIN_port; public static int MAX_port; private int threadnum; public TCPThread(String name,int threadnum) { super(name); this.threadnum = threadnum; } public void run() { int i; Socket theTCPsocket; for (i = MIN_port+threadnum; i < MAX_port; i += Integer.parseInt(Scan.maxThread.getText())) { Scan.status.setText("状态:扫描 "+i+" 端口"); try { theTCPsocket=new Socket(hostAddress,i); theTCPsocket.close(); Scan.Result.append(" "+i); switch(i) { case 21: Scan.Result.append("(FTP)"); break; case 22: Scan.Result.append("(SSH)"); break; case 23: Scan.Result.append("(TELNET)"); break; case 25: Scan.Result.append("(SMTP)"); break; case 80: Scan.Result.append("(HTTP)"); break; case 110: Scan.Result.append("(POP)"); break; case 139: Scan.Result.append("(netBIOS)"); break; case 443: Scan.Result.append("(HTTPS)"); break; case 1433: Scan.Result.append("(MSSQL)"); break; case 3306: Scan.Result.append("(MYSQL)"); break; case 3389: Scan.Result.append("(Terminal Services)"); break; case 4000: Scan.Result.append("(Tencent QQ)"); break; } Scan.Result.append(","); } catch (IOException e) {} } if (i==MAX_port) { Scan.Result.append("\n"+"Completed ..."); Scan.status.setText("状态:Completed!"); } } } class Cancle implements ActionListener { public void actionPerformed (ActionEvent e) { System.exit(1); } } class Submit implements ActionListener { public void actionPerformed (ActionEvent a) { int minPort; int maxPort; int maxThread; try { minPort=Integer.parseInt(Scan.minPort.getText()); maxPort=Integer.parseInt(Scan.maxPort.getText()); maxThread=Integer.parseInt(Scan.maxThread.getText()); } catch(NumberFormatException e) { Scan.DLGINFO.setText("端口号或线程数错误!端口号和线程数必须为整数!"); Scan.DLGError.setVisible(true); Scan.status.setText("状态:No start "); return; } try { TCPThread.hostAddress=InetAddress.getByName(Scan.hostname.getText()); } catch(UnknownHostException e) { Scan.DLGINFO.setText(" IP/域名或地址错误! "); Scan.DLGError.setVisible(true); Scan.status.setText("状态:No start "); return; } if(minPort<0 || minPort>65535 || minPort>maxPort) { Scan.DLGINFO.setText("端口界于0-65535 !"); Scan.DLGError.setVisible(true); return; } else TCPThread.MIN_port=minPort; if(maxPort<0 || maxPort>65535 || maxPort<minPort) { Scan.DLGINFO.setText("端口界于0-65535 !"); Scan.DLGError.setVisible(true); Scan.status.setText("状态:No start"); return; } else TCPThread.MAX_port=maxPort; if(maxThread<1 || maxThread>300) { Scan.DLGINFO.setText(" 线程数为1-300的整数! "); Scan.DLGError.setVisible(true); Scan.status.setText("状态:No start"); return; } Scan.Result.setText(""); Scan.Result.append("正在扫描 "+Scan.hostname.getText()+" 线程数 "+Scan.maxThread.getText()+"\n"); Scan.Result.append("开放端口: "); for(int i=0;i<maxThread;i++) { new TCPThread("T" + i,i).start(); } } } class OK implements ActionListener { public void actionPerformed (ActionEvent e) { Scan.DLGError.dispose(); } } public class Scan { public static JFrame main=new JFrame("JAVA的多线程TCP端口扫描程序 "); public static JTextArea Result=new JTextArea("",4,43); public static JTextField hostname=new JTextField("www.eviloctal.com",10); public static JTextField minPort=new JTextField("0",4); public static JTextField maxPort=new JTextField("1000",4); public static JTextField maxThread=new JTextField("100",3); public static JDialog DLGError=new JDialog(main,"Wrong!"); public static Label DLGINFO=new Label(""); public static Label status=new Label("状态:No start"); public static void main(String[] args) { main.setSize(500,220); main.setLocation(320,320); main.setResizable(false); DLGError.setSize(300,100); DLGError.setLocation(400,400); JPanel mainPanel = new JPanel(); Label H=new Label("ip-域名:"); Label P1=new Label("端口范围:"); Label P2=new Label("-"); Label TNUM=new Label("线程数:"); Label RST=new Label("扫描结果: Onlyer[EST-VIP]"); Label con=new Label(" "); Result.setLineWrap(true); Result.setEditable(false); JButton OK = new JButton("确定"); JButton Submit = new JButton("确定"); JButton Cancel = new JButton("退出"); Container mPanel = main.getContentPane(); Container dPanel = DLGError.getContentPane(); mPanel.setLayout(new FlowLayout(FlowLayout.LEFT)); dPanel.setLayout(new FlowLayout(FlowLayout.CENTER)); mPanel.add(H); mPanel.add(hostname); mPanel.add(P1); mPanel.add(minPort); mPanel.add(P2); mPanel.add(maxPort); mPanel.add(TNUM); mPanel.add(maxThread); mPanel.add(RST); mPanel.add(Result); mPanel.add(con); mPanel.add(Submit); mPanel.add(Cancel); mPanel.add(status); dPanel.add(DLGINFO); dPanel.add(OK); main.setVisible(true); Submit.addActionListener(new Submit()); Cancel.addActionListener(new Cancle()); OK.addActionListener(new OK()); } }