GUI界面的简单网络聊天程序

//服务器端
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import https://www.360docs.net/doc/be10290266.html,.*;
import javax.swing.*;

//窗体类
class SFrame extends Frame{
ServerSocket server = null;
Socket client = null;
TextField port = new TextField("8000");//将端口默认设为8000
Button start = new Button("Start");
TextArea sfTA = new TextArea(25, 60);
TextField sfTF = new TextField(40);
Button say = new Button("say");
SFListener sfListener = new SFListener();

//初始化
SFrame(String title){
super(title);
init();//初始化

start.addActionListener(sfListener);
say.addActionListener(sfListener);
//按键监听
addWindowListener( //窗口监听器
new WindowAdapter() {
public void windowClosing(WindowEvent e){ //关闭窗体
try {
server.close();
}
catch(Exception ee)
{
ee.printStackTrace();
}
System.exit(0);
}
}
);
this.setVisible(true);
}

//初始化函数
void init() {
setLocation(10,10); //窗体位置
setSize(400,400); //窗体大小
setResizable(false); //设置窗体不可由用户调整大小
setBackground(Color.gray); //设置窗体背景色
sfTA.setBackground(Color.LIGHT_GRAY);

//BorderLayout.NORTH设置
Panel North = new Panel();
North.add(new Label("port"));
North.add(this.port);
North.add(this.start);
this.add(North,BorderLayout.NORTH);
//BorderLayout.CENTER设置
Panel Center = new Panel();
Center.add(this.sfTA);
this.add(Center,BorderLayout.CENTER);
//BorderLayout.SOUTH设置
Panel South = new Panel();
South.add(new Label("say"));
South.add(this.sfTF);
South.add(this.say);
this.add(South,BorderLayout.SOUTH);
//自动调整窗口大小
pack();
}

//监听器类
class SFListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String s = e.getActionCommand();
if ("Start" == s) { //start操作
try {
start.setEnabled(false);
int i = Integer.parseInt(port.getText());
sfTA.append("Server Port :"+port.getText()+"\n");
server = new ServerSocket(i);
client = server.accept();
sfTA.append("a client connect ...\n");

ServerThread sfST = new ServerThread(); //
sfST.start();
}
catch(Exception ce) {
ce.printStackTrace();
}
}
else if("say" == s) { //say操作
try {
PrintWriter ss = new PrintWriter(client.getOutputStream());
String str = sfTF.getText();
if(str != "") {
sfTA.append("Server say:" + str + "\n");
ss.write("Server say:"+ str +

"\n");
ss.flush();
}
sfTF.setText("");
}
catch(Exception se) {
se.printStackTrace();
}
}
}
}

//线程类
class ServerThread extends Thread {
public void run() {
try {
BufferedReader br = new BufferedReader(new InputStreamReader(client.getInputStream()) );
String s = br.readLine();
while(!"client say:bye".equals(s) && s != null) {
sfTA.append(s+"\n");
s = br.readLine();
}
}
catch(Exception re) {
re.printStackTrace();
}
}
}
}

//主类，启动服务器端
public class SocketServer{
public static void main(String[] args){
SFrame sf = new SFrame("服务器");
}
}


//客户端

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import https://www.360docs.net/doc/be10290266.html,.*;
import javax.swing.*;

//窗体类
class CFrame extends Frame
{
Socket client = null;
TextField port = new TextField("8000");
TextField ip = new TextField("127.0.0.1");
Button connect = new Button("connect");
TextArea cfTA = new TextArea(25,60);
TextField cfTF = new TextField(40);
Button say = new Button("say");
CFListener cfListener = new CFListener();
//
CFrame(String title)
{
super(title);
init();
connect.addActionListener(cfListener);
say.addActionListener(cfListener);

addWindowListener( //窗口监听器
new WindowAdapter() {
public void windowClosing(WindowEvent e) { //关闭窗体
try {
client.close();
}catch(Exception ee){
ee.printStackTrace();
}
System.exit(0);
}
}
);
setVisible(true);
}

void init() {
setLocation(500,10); //窗体位置
setSize(400,400); //窗体大小
setResizable(false); //设置窗体不可由用户调整大小
setBackground(Color.gray); //设置窗体背景色
cfTA.setBackground(Color.LIGHT_GRAY);

//BorderLayout.NORTH设置
Panel North = new Panel();
North.add(new Label("IP"));
North.add(this.ip);
North.add(new Label("port"));
North.add(this.port);
North.add(this.connect);
this.add(North,BorderLayout.NORTH);
//BorderLayout.CENTER设置
Panel Center = new Panel();
Center.add(this.cfTA);
this.add(Center,BorderLayout.CENTER);
//BorderLayout.SOUTH设置
Panel South = new Panel();
South.add(new Label("say"));
South.add(this.cfTF);
South.add(this.say);
this.add(South,BorderLayout.SOUTH);
//自动调整窗口大小
pack();
}

//监听器类
class CFListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
String s = e.getActionCommand();
if("connect" == s) {
try {
connect.setEnabled(false);
int i = Integer.parseInt(port.getText());
cfTA.append("Socket Connect IP :"+ip.getText()+"\nConnect Port :"+port.getText()+"\n");
clien

t = new Socket(ip.getText(),i);
cfTA.append("connect ...\n");

ClientThread cfCT = new ClientThread(); //
cfCT.start();
}
catch(Exception ce) {
ce.printStackTrace();
}
}
else if("say" == s) {
try {
String str = cfTF.getText();
PrintWriter cc = new PrintWriter(client.getOutputStream());
if(str != ""){
cc.write("client say:" + str + "\n");
cc.flush();
cfTA.append("client say:" + str + "\n");
}
cfTF.setText("");
}
catch(Exception se) {
se.printStackTrace();
}
}
}
}

class ClientThread extends Thread {
public void run() {
try{
BufferedReader br = new BufferedReader( new InputStreamReader(client.getInputStream()) );
String s = br.readLine();
while(!"Server say:bye".equals(s) && s != null){
cfTA.append(s + "\n");
s = br.readLine();
}
}
catch(Exception re) {
re.printStackTrace();
}
}
}

}

//主类，启动客户端
public class SocketClient {
public static void main(String[] args) {
CFrame cf = new CFrame("客户端");
}
}