网络通讯原理基础

韩顺平.循序渐进学.java.从入门到精通.山寨QQ

接触到了网络，跟着做了一次，瞬间感觉高大上了很多，不过还是很基础的东西。

服务器端：

/**
 * Function:服务器端
 * 
 * Author:Jz_xy
 * Date:2014.12.09
 */

package com.test1;

import javax.swing.*;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;

public class MyServer3 extends JFrame implements ActionListener{

	JTextArea jta = null;
	JTextField jtf = null;
	JButton jb = null;
	
	JScrollPane jsp = null;
	JPanel jp1 = null;
	
	//把信息发给客户端的对象
	PrintWriter pw = null;
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		MyServer3 ms3 = new MyServer3();
	}

	public MyServer3()
	{
		
		jta = new JTextArea();
		
		jsp = new JScrollPane(jta);
		
		jtf = new JTextField(20);
		jb = new JButton("发送");
		jb.addActionListener(this);
		
		jp1 = new JPanel();
		jp1.add(jtf);
		jp1.add(jb);
		
		this.add(jsp,"Center");
		this.add(jp1,"South");
		
		this.setSize(400,300);
		this.setTitle("QQ聊天，服务器端");
		this.setVisible(true);
		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		
		try {
			//服务器监听
			ServerSocket ss = new ServerSocket(9988);
			//等待连接
			Socket s = ss.accept();
			
			InputStreamReader isr = new InputStreamReader(s.getInputStream());
			BufferedReader br = new BufferedReader(isr);
			
			pw = new PrintWriter(s.getOutputStream(),true);
			
			//读取从客户端发来的信息
			while(true)
			{
				//读取送客户端发来的信息
				String infoFromClient = br.readLine();
				jta.append("客户端 对 服务器 说： " + infoFromClient + "\r\n");
			}
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
		
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		
		//如果用户按下发送信息的按钮
		if(e.getSource() == jb)
		{
			//把服务器在jtf中的信息，发送给客户端
			String info = jtf.getText();
			
			//把服务器发送的信息先是到jta
			jta.append("服务器 对 客户端 说： " + info + "\r\n");
			
			pw.println(info);
			//清空jtf
			jtf.setText("");
		}
	}	
}

客户端：

/**
 * Function:这是一个客户端
 * 
 * Author:Jz_xy
 * Date:2014.12.09
 */
package com.test1;

import javax.swing.*;

import java.net.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;

public class MyClient3 extends JFrame implements ActionListener{


	JTextArea jta = null;
	JTextField jtf = null;
	JButton jb = null;
	
	JScrollPane jsp = null;
	JPanel jp1 = null;
	
	PrintWriter pw = null;
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		MyClient3 ms3 = new MyClient3();
	}

	public MyClient3()
	{
		
		jta = new JTextArea();
		
		jsp = new JScrollPane(jta);
		
		jtf = new JTextField(20);
		jb = new JButton("发送");
		jb.addActionListener(this);
		
		jp1 = new JPanel();
		jp1.add(jtf);
		jp1.add(jb);
		
		this.add(jsp,"Center");
		this.add(jp1,"South");
		
		this.setSize(400,300);
		this.setTitle("QQ聊天，客户端");
		this.setVisible(true);
		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		
		try {
			Socket s = new Socket("127.0.0.1",9988);
			
			InputStreamReader isr = new InputStreamReader(s.getInputStream());
			BufferedReader br = new BufferedReader(isr);
			
			pw = new PrintWriter(s.getOutputStream(),true);
			
			while(true)
			{
				//不停地读取从服务器端发来的信息
				String info = br.readLine();				
				jta.append("服务器 对 客户端 说： " + info + "\r\n");
			}
			
		} catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		
		if(e.getSource() == jb)
		{
			String info = jtf.getText();
			
						
			
			//把客户端发送的信息先是到jta
			jta.append("客户端 对 服务器 说： " + info + "\r\n");
			pw.println(info);
			jtf.setText("");
		}
	}	
}