java 运行nc_用java实现nc功能实例

r囧r小猫 2022-11-03 11:41 214阅读 0赞

导读：

/\*

socket编程实例

一个用java实现nc的功能的小例子

请各位高手指教：shengshuai@126.com

\*/

import java.net.\*;

import java.io.\*;

import javax.swing.event.\*;

import javax.swing.\*;

import java.awt.\*;

import java.awt.event.\*;

import javax.swing.UIManager;

import javax.swing.plaf.metal.MetalLookAndFeel;

public class fs

public fs()

fsframe Frame1 = new fsframe();

Frame1.validate();

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();

Dimension frameSize = Frame1.getSize();

if (frameSize.height > screenSize.height)

frameSize.height = screenSize.height;

if (frameSize.width > screenSize.width)

frameSize.width = screenSize.width;

Frame1.setLocation((screenSize.width - frameSize.width)/2,(screenSize.height - frameSize.height)/2);

//Frame1.setlocation(0,0);

Frame1.setDefaultCloseOperation(3);

Frame1.show();

public static void main(String\[\] args)

try

UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");

\}catch(Exception e)

e.printStackTrace();

new fs();

class fsframe extends JFrame

String indata = null;

DataInputStream in;

DataOutputStream out;

Socket conn;

JLabel la = new JLabel("请输入：");

JButton lianjie = new JButton("连接");

JButton act = new JButton("执行");

JTextField hostfield = new JTextField("www.126.com",10);

JTextField portfield = new JTextField("80",2);

JTextArea log = new JTextArea(10,0);

JTextArea input = new JTextArea(4,0);

JPanel contorlpanel = new JPanel();

JPanel inputPanel = new JPanel();

JScrollPane logscrollpane = new JScrollPane();

JScrollPane inputsrollpane = new JScrollPane();

public fsframe()

setSize(Toolkit.getDefaultToolkit().getScreenSize().width/2,380);

try

this.setResizable(false);

this.getContentPane().setLayout(new BorderLayout());

this.setBackground(Color.red);

log.setText("");

log.setEditable(false);

logscrollpane.getViewport().add(log);

this.getContentPane().add(logscrollpane,BorderLayout.NORTH);

contorlpanel.setLayout(new FlowLayout());

contorlpanel.add(la);

contorlpanel.add(hostfield);

contorlpanel.add(portfield);

contorlpanel.add(lianjie);

contorlpanel.add(act);

this.getContentPane().add(contorlpanel,BorderLayout.CENTER);

inputsrollpane.getViewport().add(input);

this.getContentPane().add(inputsrollpane,BorderLayout.SOUTH);

lianjie.addActionListener(new ActionListener()\{

public void actionPerformed(ActionEvent e)\{

String host = hostfield.getText();

int port = Integer.parseInt(portfield.getText());

if(host.equals("")||(portfield.getText().equals("")))

JOptionPane.showMessageDialog(null, "主机和端口为空！");

log.append("正在连接……/n");

try\{

conn = new Socket(InetAddress.getByName(host),port);

in = new DataInputStream(conn.getInputStream());

out = new DataOutputStream(conn.getOutputStream());

log.append("已经连接至主机"+host+"端口："+port+"/n");

//while((indata=in.readLine())!="") log.append(indata);

\}catch(UnknownHostException un)

log.append("UnknownHostException:"+un+"/n");

JOptionPane.showMessageDialog(null, un);

\}catch(IOException iod)

log.append("IOException:"+iod+"/n");

JOptionPane.showMessageDialog(null,iod);

\});

act.addActionListener(new ActionListener()\{

public void actionPerformed(ActionEvent ac)\{

try\{

log.append(input.getText()+"/n");

out.writeBytes(input.getText());

out.writeBytes("/n");

input.setText("");

if((indata=in.readLine())!="") log.append(indata);

\}catch(IOException iod)

log.append("IOException:"+iod+"/n");

JOptionPane.showMessageDialog(null,iod);

\});

\}catch(Exception e)

log.append("Exception"+e);

/\* socket编程实例 一个用java实现nc的功能的小例子 请各位高手指教：shengshuai@126.com\*/ import java.net.\*; import java.io.\*; import javax.swing.event.\*; import javax.swing.\*; import java.awt.\*; import java.awt.event.\*; import javax.swing.UIManager; import javax.swing.plaf.metal.MetalLookAndFeel; public class fs\{ public fs() \{ fsframe Frame1 = new fsframe(); Frame1.validate(); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frameSize = Frame1.getSize(); if (frameSize.height > screenSize.height) \{ frameSize.height = screenSize.height; \} if (frameSize.width > screenSize.width) \{ frameSize.width = screenSize.width; \} Frame1.setLocation((screenSize.width - frameSize.width)/2,(screenSize.height - frameSize.height)/2); //Frame1.setlocation(0,0); Frame1.setDefaultCloseOperation(3); Frame1.show(); \} public static void main(String\[\] args) \{ try \{ UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel"); \}catch(Exception e) \{ e.printStackTrace(); \} new fs(); \}\} class fsframe extends JFrame\{ String indata = null; DataInputStream in; DataOutputStream out; Socket conn; JLabel la = new JLabel("请输入："); JButton lianjie = new JButton("连接"); JButton act = new JButton("执行"); JTextField hostfield = new JTextField("www.126.com",10); JTextField portfield = new JTextField("80",2); JTextArea log = new JTextArea(10,0); JTextArea input = new JTextArea(4,0); JPanel contorlpanel = new JPanel(); JPanel inputPanel = new JPanel(); JScrollPane logscrollpane = new JScrollPane(); JScrollPane inputsrollpane = new JScrollPane(); public fsframe() \{ setSize(Toolkit.getDefaultToolkit().getScreenSize().width/2,380); try \{ this.setResizable(false); this.getContentPane().setLayout(new BorderLayout()); this.setBackground(Color.red); log.setText(""); log.setEditable(false); logscrollpane.getViewport().add(log); this.getContentPane().add(logscrollpane,BorderLayout.NORTH); contorlpanel.setLayout(new FlowLayout()); contorlpanel.add(la); contorlpanel.add(hostfield); contorlpanel.add(portfield); contorlpanel.add(lianjie); contorlpanel.add(act); this.getContentPane().add(contorlpanel,BorderLayout.CENTER); inputsrollpane.getViewport().add(input); this.getContentPane().add(inputsrollpane,BorderLayout.SOUTH); lianjie.addActionListener(new ActionListener()\{ public void actionPerformed(ActionEvent e)\{ String host = hostfield.getText(); int port = Integer.parseInt(portfield.getText()); if(host.equals("")||(portfield.getText().equals(""))) JOptionPane.showMessageDialog(null, "主机和端口为空！"); log.append("正在连接……/n"); try\{ conn = new Socket(InetAddress.getByName(host),port); in = new DataInputStream(conn.getInputStream()); out = new DataOutputStream(conn.getOutputStream()); log.append("已经连接至主机"+host+"端口："+port+"/n"); //while((indata=in.readLine())!="") log.append(indata); \}catch(UnknownHostException un) \{ log.append("UnknownHostException:"+un+"/n"); JOptionPane.showMessageDialog(null, un); \}catch(IOException iod) \{ log.append("IOException:"+iod+"/n"); JOptionPane.showMessageDialog(null,iod); \} \} \}); act.addActionListener(new ActionListener()\{ public void actionPerformed(ActionEvent ac)\{ try\{ log.append(input.getText()+"/n"); out.writeBytes(input.getText()); out.writeBytes("/n"); input.setText(""); if((indata=in.readLine())!="") log.append(indata); \}catch(IOException iod) \{ log.append("IOException:"+iod+"/n"); JOptionPane.showMessageDialog(null,iod); \} \} \}); \}catch(Exception e) \{ log.append("Exception"+e); \} \}\}

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