使用TCP协议的Socket网络程序设计.docx

实验名称：使用TCP协议的Socket网络程序设计实验目的：掌握Socket通讯机制，掌握Socket和ServerSocket类和相关方法。实验环境：Windows XP ，Eclipse实验内容和步骤：1、创建服务器和客户程序，在运行客户程序的计算机上输入的内容，可以在服务器屏幕上看到。2、有下面一段Server段程序，目的是能够同时服务多个客户，客户的请求是一句话（一个 String）。如果这个请求的内容是字符串plain的话，服务器仅将hello字符串返回给用户。否则将用户的话追加到当前目录的文本文件Memo.txt中（路径为Memo.txt），并向用户返回OK。注意Server并发的处理多用户，Memo.txt被共享，要求不能出现数据不一致。3、使用socket编写一个服务器端程序，服务器端程序在端口8888监听，如果它接到客户端发来的hello请求时会回应一个hello，对客户端的其他请求不响应。源程序：/Client.javaimport java.awt.Container;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.DataInputStream;import java.io.ObjectOutputStream;import .Socket;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JTextField;public class Client extends JFrame implements ActionListenerJLabel lMessage;JTextField tMessage;JButton sendButton,exitButton;public static void main(String args)new Client();/构造函数public Client()Container content = this.getContentPane();content.setLayout(new GridLayout(2,2);lMessage = new JLabel(请输入要发送的消息);tMessage = new JTextField();sendButton = new JButton(发送);exitButton = new JButton(退出);content.add(lMessage);content.add(tMessage);content.add(sendButton);content.add(exitButton);sendButton.addActionListener(this);exitButton.addActionListener(this);this.pack();this.setVisible(true);this.setDefaultCloseOperation(this.EXIT_ON_CLOSE);Overridepublic void actionPerformed(ActionEvent e) / TODO Auto-generated method stubObject obj = e.getSource();if(obj = sendButton)SendMessage sendMessage = new SendMessage();sendMessage.sendMsg = tMessage.getText().toString();trySocket socket = new Socket(,8888);ObjectOutputStream outStream = new ObjectOutputStream(socket.getOutputStream();outStream.writeObject(SendMessage)sendMessage);DataInputStream inStream = new DataInputStream(socket.getInputStream();String str = inStream.readUTF();if(str.equals(wrong)elseJOptionPane.showMessageDialog(null, str,服务器返回信息,JOptionPane.PLAIN_MESSAGE);socket.close();catch(Exception e2)JOptionPane.showMessageDialog(null, e, 错误信息, JOptionPane.PLAIN_MESSAGE);elseSystem.exit(0);class SendMessage extends Object implements java.io.SerializableString sendMsg;/Server.javaimport .ServerSocket;import .Socket;public class Server implements RunnableServerSocket server = null;/服务器端套接字Socket client = null;/客户端套接字Thread serverThread;public static void main(String args)new Server();public Server()tryserver = new ServerSocket(8888);serverThread = new Thread(this);serverThread.start();catch(Exception e)System.out.println(服务器端: + e);Overridepublic void run() trywhile(true)client = server.accept();Connect con = new Connect(client);catch(Exception e)System.out.println(服务器端2: + e);/Connect.javaimport java.io.DataOutputStream;import java.io.ObjectInputStream;import .Socket;import .URLEncoder;public class Connect SendMessage data;ObjectInputStream readClient;DataOutputStream writeClient;public Connect(Socket ioClient)tryreadClient = new ObjectInputStream(ioClient.getInputStream();writeClient = new DataOutputStream(ioClient.getOutputStream();data = (SendMessage)readClient.readObject();/读取客户数据String feadBack;String str2 = hello; if(data.sendMsg.equals(str2)feadBack = data.