java端口扫描器，简单

import java.net.*; import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; /* *实现扫描的主体程序 */ public class ThreadScan{ public static JFrame main=new JFrame("JAVA端口扫描器"); //显示扫描结果 public static JTextArea Result=new JTextArea("",4,40); //滚动条面板 public static JScrollPane resultPane = new JScrollPane(Result,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); //输入主机名文本框 public static JTextField hostname=new JTextField("localhost",8); //输入ip地址前3位的输入框 public static JTextField fromip1=new JTextField("0",3); //输入ip地址4~6位的输入框 public static JTextField fromip2=new JTextField("0",3); //输入ip地址7~9位的输入框 public static JTextField fromip3=new JTextField("0",3); //输入起始ip地址最后4位的输入框 public static JTextField fromip4=new JTextField("0",3); //输入目标ip地址最后4位的输入框 public static JTextField toip=new JTextField("0",3); //输入最小端口的输入框 public static JTextField minPort=new JTextField("0",4); //输入最大端口的输入框 public static JTextField maxPort=new JTextField("1000",4); //输入最大线程数量的输入框 public static JTextField maxThread=new JTextField("100",3); //错误提示框 public static JDialog DLGError=new JDialog(main,"错误!"); public static JLabel DLGINFO=new JLabel(""); public static JLabel type=new JLabel("请选择："); //扫描类型 public static JRadioButton radioIp = new JRadioButton("IP地址："); public static JRadioButton radioHost = new JRadioButton("主机名：",true); //单选框组 public static ButtonGroup group = new ButtonGroup(); public static JLabel P1=new JLabel("端口范围:"); public static JLabel P2=new JLabel("~"); public static JLabel P3=new JLabel("~"); public static JLabel Pdot1 = new JLabel("."); public static JLabel Pdot2 = new JLabel("."); public static JLabel Pdot3 = new JLabel("."); public static JLabel TNUM=new JLabel("线程数:"); public static JLabel RST=new JLabel("扫描结果: "); public static JLabel con=new JLabel(" "); //定义按钮 public static JButton OK = new JButton("确定"); public static JButton Submit = new JButton("开始扫描"); public static JButton Cancel = new JButton("退出"); public static JButton saveButton = new JButton("保存扫描结果"); //菜单栏 public static JMenuBar myBar = new JMenuBar(); public static JMenu myMenu = new JMenu("文件(F)"); public static JMenuItem saveItem = new JMenuItem("保存扫描结果(S)"); public static JMenuItem exitItem = new JMenuItem("退出(Q)"); public static JMenu myMenu2 = new JMenu("帮助"); public static JMenuItem helpItem = new JMenuItem("阅读"); public static void main(String[] args){ main.setSize(500,400); main.setLocation(300,300); main.setResizable(false); main.setLayout(new GridBagLayout()); main.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); DLGError.setSize(300,100); DLGError.setLocation(400,400); //添加“菜单栏” myMenu.add(saveItem); myMenu.add(exitItem); myMenu2.add(helpItem); myBar.add(myMenu); myBar.add(myMenu2); main.setJMenuBar(myBar); //设置热键 myMenu.setMnemonic('F'); saveItem.setMnemonic ('S'); //为“另存为”组件设置快捷键为ctrl+s saveItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_S,InputEvent.CTRL_MASK)); exitItem.setMnemonic('Q'); exitItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_E,InputEvent.CTRL_MASK)); //采用表格包型布局 Container mPanel = main.getContentPane(); GridBagConstraints c = new GridBagConstraints(); c.insets = new Insets(10,0,0,10); c.gridx = 0; c.gridy = 0; c.gridwidth = 10; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(type,c); group.add(radioIp); group.add(radioHost); c.gridx = 0; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(radioIp,c); c.gridx = 1; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(fromip1,c); c.gridx = 2; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(Pdot1,c); c.gridx = 3; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(fromip2,c); c.gridx = 4; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(Pdot2,c); c.gridx = 5; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(fromip3,c); c.gridx = 6; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(Pdot3,c); c.gridx = 7; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(fromip4,c); c.gridx = 8; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(P2,c); c.gridx = 9; c.gridy = 1; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(toip,c); c.gridx = 0; c.gridy = 2; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(radioHost,c); c.gridx = 1; c.gridy = 2; c.gridwidth = 3; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(hostname,c); c.gridx = 0; c.gridy = 3; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(P1,c); c.gridx = 1; c.gridy = 3; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(minPort,c); c.gridx = 2; c.gridy = 3; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(P3,c); c.gridx = 3; c.gridy = 3; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(maxPort,c); c.gridx = 0; c.gridy = 4; c.gridwidth = 1; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(TNUM,c); c.gridx = 1; c.gridy = 4; c.gridwidth = 3; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(maxThread,c); c.gridx = 0; c.gridy = 5; c.gridwidth = 3; c.fill = GridBagConstraints.VERTICAL; c.anchor = GridBagConstraints.CENTER; mPanel.add(Submit,c); c.gridx = 3; c.gridy = 5; c.gridwidth = 3; c.fill = GridBagConstraints.VERTICAL; c.anchor = GridBagConstraints.CENTER; mPanel.add(saveButton,c); c.gridx = 6; c.gridy = 5; c.gridwidth = 4; c.fill = GridBagConstraints.VERTICAL; c.anchor = GridBagConstraints.CENTER; mPanel.add(Cancel,c); c.gridx = 0; c.gridy = 6; c.gridwidth = 10; c.fill = GridBagConstraints.BOTH; c.anchor = GridBagConstraints.CENTER; mPanel.add(RST,c); //设置文本区域可以换行 Result.setLineWrap(true); //设置文本区域不可编辑 Result.setEditable(false); c.gridx = 0; c.gridy = 7; c.gridwidth = 10; c.gridheight = 4; c.fill = GridBagConstraints.VERTICAL; c.anchor = GridBagConstraints.CENTER; mPanel.add(resultPane,c); Container dPanel = DLGError.getContentPane(); dPanel.setLayout(new FlowLayout(FlowLayout.CENTER)); dPanel.add(DLGINFO); dPanel.add(OK); Submit.addActionListener(new SubmitAction()); Cancel