实验08 Java之网络编程.doc

实验七 网络编程1实验目的（1）掌握Socket通信。（2）掌握UDP通信2实验内容实验题1 利用Socket类和ServerSocket类编写一个C/S程序，实现C/S通信。客户端向服务器端发送Time命令，服务器端接受到该字符串后将服务器端当前时间返回给客户端；客户端向服务器端发送Exit命令，服务器端向客户端返回“Bye”后退出。基本要求 编写完整程序。服务器端：package .jp; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import .ServerSocket; import .Socket; public class MessageServer public static void main(String args) try ServerSocket server = new ServerSocket(3000); Socket client = server.accept();/启动倾听，等待客户端 BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream();/输入流对象 PrintWriter out = new PrintWriter(client.getOutputStream();/输出流对象 BufferedReader userin = new BufferedReader(new InputStreamReader(System.in);/实现键盘输入 /启动接受和发送线程 new sendThread(out,userin,server).start(); new reciveThread(in).start(); catch (IOException e) e.printStackTrace(); package .jp;import java.io.BufferedReader;import java.io.IOException;import java.io.PrintWriter;import .ServerSocket;import .Socket;public class reciveThread extends Thread BufferedReader in;/ 服务器端接受线程public reciveThread(BufferedReader in) this.in = in;Overridepublic void run() try while (true) String info = in.readLine();/ 获取信息if (info.equals(exit) break;while (info != null) System.out.println(info);info = in.readLine();if (info.equals(exit) System.out.println(info);break;break; catch (IOException e) e.printStackTrace();package .jp;import java.io.BufferedReader;import java.io.IOException;import java.io.PrintWriter;import .ServerSocket;import .Socket;import java.text.SimpleDateFormat;import java.util.Date;public class sendThread extends Thread PrintWriter out;BufferedReader userin;ServerSocket server;public sendThread(PrintWriter out, BufferedReader userin, ServerSocket server ) this.out = out;this.userin = userin;this.server = server;Overridepublic void run() SimpleDateFormat sf = new SimpleDateFormat(yyyy-MM-dd HH:mm:ss.sss);String str = null;try out.println(sf.format(new Date();out.flush();while (true) str = userin.readLine();out.println(Server: + n + str);/ 服务器端从键盘输入out.flush();if (str.equals(Bybe) break;userin.close();server.close(); catch (IOException e) e.printStackTrace();客户端：package .jp; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import .InetAddress; import .Socket; public class clent public static void main(String args) try Socket server = new Socket(InetAddress.getLocalHost(), 3000);/创建套接字 BufferedReader in = new BufferedReader(new InputStreamReader(server.getInputStream(); PrintWriter out=new PrintWriter(server.getOutputStream(); BufferedReader userin = new BufferedReader(new InputStreamReader(System.in); new sendThread(out,userin).start(); new reciveThread(server,in,out,userin).start(); catch (IOException e) e.printStackTrace(); package .jp;import java.io.BufferedReader;import java.io.IOException;import java.io.PrintWriter;import .ServerSocket;import .Socket;public class reciveThread extends Thread BufferedReader in;PrintWriter out;BufferedReader userin;Socket client;public reciveThread(Socket client, BufferedReader in, PrintWriter out,BufferedReader userin) this.in = in;this.client = client;this.out = out;this.userin = userin;Overridepublic void run() try while (true) String info = in.readLine();if (info.equals(Bybe) break;while (info != null) System.out.println(info);info = in.readLine();if (info.equals(Bybe) System.out.println(info);break;break;client.close();in.close();out.close();userin.close(); catch (IOException e) e.printStackTrace();package .jp;import java.io.BufferedReader;import java.io.IOException;import java.io.PrintWriter;import java.text.SimpleDateFormat;import java.util.Date;public class sendThread extends Thread PrintWriter out;BufferedReader userin;public sendThread(PrintWriter out, BufferedReader userin) this.out = out;this.userin = userin;Overridepublic void run() SimpleDateFormat sf = new SimpleDateFormat(yyyy-MM-dd HH:mm:ss.sss);String str = null;try out.println(sf.format(new Date();out.flush();while (true) str = userin.readLine();out.println(client: + n + str);out.flush(); catch (IOException e) e.printStackTrace();实验题2 编写一数据报通信程序，实现简单的聊天功能。聊天内容输入文本确定清空退出图3.9 聊天程序界面基本要求 两人一组编写完整程序。“聊天内容”和“输入文本”分别为当前聊天的历史信息和当前要传送出去的聊天文本。“确定”、“清空”、“退出”三个按钮分别实现发送当前聊天文本、清空当前聊天文本和退出系统的功能。package .udp.jp;import java.awt.BorderLayout;public class Gui_Udp extends JFrame private JPanel contentPane;private JTextField textField;private static JTextArea textArea;public static void receive() throws Exception DatagramSocket ds = new DatagramSocket(7000);byte buf = new byte1024;DatagramPacket dp = new DatagramPacket(buf, 1024);ds.receive(dp);String ip = dp.getAddress().getHostAddress();if(!InetAddress.getLocalHost().getHostAddress().equals(ip)textArea.append(接收UDP包:n + new String(buf, 0, dp.getLength() + n);ds.close();public void send(String sendStr) throws Exception InetAddress address = InetAddress.getByName();byte buf = sendStr.getBytes();DatagramPacket dp = new DatagramPacket(buf, buf.length, address, 7000);DatagramSocket ds = new DatagramSocket();ds.send(dp);ds.close();static void recieve() /接收UDP包new Thread(new Runnable() Overridepublic void run() try receive(); catch (Exception e) / TODO Auto-generated catch blocke.printStackTrace();).start();/* * Launch the application. */public static void main(String args) EventQueue.invokeLater(new Runnable() public void run() try Gui_Udp frame = new Gui_Udp();recieve();frame.setVisible(true); catch (Exception e) e.printStackTrace(););/* * Create the frame. */public Gui_Udp() setResizable(false);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 450, 300);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5);setContentPane(contentPane);contentPane.setLayout(null);JButton btnSureButton = new JButton(u786Eu5B9A);btnSureButton.addActionListener(new ActionListener() public void actionPerformed(ActionEvent arg0) if (textField.getText() != ) textArea.append(发送UDP包:n + textField.getText() + n);try send(textField.getText();/发送UDP包textField.setText(null); catch (Exception e) e.printStackTrace(););btnSureButton.setBounds(323, 34, 83, 27);contentPane.add(btnSureButton);JButton btnClearButton = new JButton(u6E05u7A7A);btnClearButton.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) textField.setText();textArea.setText(););btnClearButton.setBounds(323, 100, 83, 27);contentPane.add(btnClearButton);JButton btnOutButton = new JButton(u900