Java学习图形界面+网络编程案例---------网络简易通讯

主要思想：

     主类继承JPanel，在构造方法中将JFrame设成空布局；在其中适当位置添加组件；实现事件监听处理

DATE:2015-10-31

服务器端代码：

/**
 *  @author Oyc
 *  功能：网络简易测试的服务器端
 *  
 * 
 */
package com.NETtestServer;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class ServerDemo extends JPanel implements ActionListener{
public static void main(String[] args) {
		// TODO Auto-generated method stub
		new ServerDemo();
	}	
//定义组件
	JFrame jf;
    JTextField SendJTF;
    JButton SendJB;
    JTextArea jta=null;
	JScrollPane jsp=null;
	PrintWriter pw;
	 public ServerDemo(){
		 this.setLayout(null);
		 //创建组件
		   jta=new  JTextArea();
		   jsp=new  JScrollPane(jta);
		   jsp.setBounds(0,50,650,210);
		   this.add(jsp);
		   
		 SendJTF=new JTextField(15);
		 SendJTF.addActionListener(this);
		 SendJTF.setBackground(Color.lightGray);
		 SendJTF.setBounds(0,250,650,120);
		 this.add(SendJTF);
		 //发送按钮
		 SendJB=new JButton("发送");
		 SendJB.setBounds(540,380,80,25);
		 SendJB.addActionListener(this);
		 this.add(SendJB);
	  
	  jf=new JFrame("QQ简易聊天 服务器");
	  jf.setBounds(400, 100, 660, 445);
	  jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	  jf.add(this);
	  jf.setVisible(true);
	  jf.setResizable(false);
	  //开启监听
	  try {
			//在9988号端口监听 
			ServerSocket ss=new ServerSocket(9988);
			//等待客户端连接
			Socket s=ss.accept();
			// 接受从客户端发来的信息
			InputStreamReader isr=new InputStreamReader(s.getInputStream());
			BufferedReader br=new BufferedReader(isr);
			//发送准备
			pw=new PrintWriter(s.getOutputStream(),true);
			while(true){
					//读入从客户端发来的信息
					String infoClient=br.readLine();
					jta.append("客户端:"+infoClient+"\n");
				}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	 
	 }
		//设置背景
		protected void paintComponent(Graphics g) 
		{
			try {
				BufferedImage  Background=ImageIO.read(new File("images/QQCHAT.jpg"));
				 g.drawImage(Background, 0, 0,654, 414,null);
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	    }

		@Override
		//事件监听处理方法
		public void actionPerformed(ActionEvent e) {
			//发送按钮
			if(e.getSource()==SendJB){
				String info=SendJTF.getText();
				pw.println(info);
				SendJTF.setText("");
				jta.append("发送："+info+"\n");
			}	
		}
}
	

　客户端代码：

/**
 * /**
 *  @author Oyc
 *  功能：网络简易测试的客户端
 * 
 */
 
package com.NETtestClient;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class ClientDemo extends JPanel implements ActionListener{
public static void main(String[] args) {
		// TODO Auto-generated method stub
		new ClientDemo();
		
	}	
   //定义组件
	JFrame jf;
    JTextField SendJTF;
    JButton SendJB;
    JTextArea jta=null;
	JScrollPane jsp=null;
	PrintWriter pw;
	 public ClientDemo(){
		 
		 this.setLayout(null);
	  //创建组件
	    jta=new  JTextArea();
	    jsp=new  JScrollPane(jta);
	    jsp.setBounds(0,50,650,210);
	    this.add(jsp);
		   
		 SendJTF=new JTextField(15);
		 SendJTF.addActionListener(this);
		 SendJTF.setBackground(Color.lightGray);
		 SendJTF.setBounds(0,250,650,120);
		 this.add(SendJTF);
		 
		//发送按钮
		 SendJB=new JButton("发送");
		 SendJB.setBounds(536,378,100,25);
		 SendJB.addActionListener(this);
		 this.add(SendJB);
	  jf=new JFrame("QQ简易聊天 客户端");
	  jf.setBounds(400, 100, 660, 445);
	  jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	  jf.add(this);
	  jf.setVisible(true);
	  jf.setResizable(false);
	  
		 //连接服务器
			try {
				Socket s=new Socket("127.0.0.1",9988 );
				 //接受从服务器发来的消息
				InputStreamReader isr=new  InputStreamReader(s.getInputStream());
				BufferedReader br=new BufferedReader(isr);
				//发送准备
				pw=new PrintWriter(s.getOutputStream(),true);
				while(true){
					//接收服务器的消息
					String infoServer=br.readLine();
					jta.append("服务器:"+infoServer+"\n");
				}
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	 }

		//设置背景
		protected void paintComponent(Graphics g) 
		{
			try {
				BufferedImage  Background=ImageIO.read(new File("images/QQCHAT.jpg"));
				 g.drawImage(Background, 0, 0,654, 414,null);
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	    }

		@Override
		//事件监听处理方法
		public void actionPerformed(ActionEvent e) {
			if(e.getSource()==SendJB){
				String info=SendJTF.getText();
				pw.println(info);
				SendJTF.setText("");
				jta.append("发送："+info+"\n");
				
			}
		}
}

　　运行截图：