以下是ChatServer程序:
package TCPChat;import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;public class ChatServer extends Thread{ static TextArea ta;
static TextField tfWord;
ServerSocket ss;
public static void main(String[] args) {
// 界面
Frame f=new Frame("服务端");
/*TextField tfIP=new TextField(15);
TextField tfPort=new TextField(6);*/
ta=new TextArea(20,50);
tfWord=new TextField(45);
Panel pN=new Panel();
Panel pC=new Panel();
Panel pS=new Panel();
BorderLayout bl=new BorderLayout();
/*pN.add(tfIP);
pN.add(tfPort);*/
pC.add(ta);
pS.add(tfWord);
// f.add(pN,bl.NORTH);
f.add(pC,bl.CENTER);
f.add(pS,bl.SOUTH);
f.setSize(500, 500);
f.setLocation(50, 200);
f.setVisible(true);
f.pack();
//退出命令响应
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
new Thread(new ChatServer()).start();//启动接收线程
//添加发送响应
tfWord.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(e.getKeyCode()==e.VK_ENTER)
{
try {
//发送
String strsend=new String(tfWord.getText()+"\n");//储备数据
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
OutputStream os=s.getOutputStream();
DataOutputStream dos=new DataOutputStream(os);
dos.writeUTF(strsend+"\n");
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
}
//接收线程
public void run()
{
try {
//接收客户端
ss=new ServerSocket(9009);
Socket s=ss.accept();
//创建接收流
InputStream is=s.getInputStream();
DataInputStream dis=new DataInputStream(is);
String str=dis.readUTF();//接收数据并存入str
//显示数据
ta.append(str+"\n");//显示在TextArea中
} catch (IOException e) {
e.printStackTrace();
}
}}
**************************
以下是ChatClient程序:
package TCPChat;import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;public class ChatClient extends Thread{
static TextArea ta;
static TextField tfWord;
Socket s;
public static void main(String[] args) {
// 界面
Frame f=new Frame("客户端");
/*TextField tfIP=new TextField(15);
TextField tfPort=new TextField(6);*/
ta=new TextArea(20,50);
tfWord=new TextField(45);
Panel pN=new Panel();
Panel pC=new Panel();
Panel pS=new Panel();
BorderLayout bl=new BorderLayout();
/*pN.add(tfIP);
pN.add(tfPort);*/
pC.add(ta);
pS.add(tfWord);
// f.add(pN,bl.NORTH);
f.add(pC,bl.CENTER);
f.add(pS,bl.SOUTH);
f.setSize(500, 500);
f.setLocation(500, 200);
f.setVisible(true);
f.pack();
//退出命令响应
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
} });
// 启动发送线程
new Thread(new ChatClient()).start();
//接收响应
tfWord.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(e.getKeyCode()==e.VK_ENTER)
{
try {
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
InputStream is=s.getInputStream();
DataInputStream dis=new DataInputStream(is);
String str=dis.readUTF();//接收数据并存入str
//显示
ta.append(str+"\n");
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
}
//发送线程
public void run()
{
/*String strsend=new String(tfWord.getText()+"\n");//储备数据 try {
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
OutputStream os = s.getOutputStream();
DataOutputStream dos=new DataOutputStream(os);
dos.writeUTF(strsend+"\n");
} catch (IOException e) {
e.printStackTrace();
}*/
tfWord.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(e.getKeyCode()==e.VK_ENTER)
{
try {
//发送
String strsend=new String(tfWord.getText()+"\n");//储备数据
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
OutputStream os=s.getOutputStream();
DataOutputStream dos=new DataOutputStream(os);
dos.writeUTF(strsend+"\n");
dos.close();
s.close();
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
}
}
package TCPChat;import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;public class ChatServer extends Thread{ static TextArea ta;
static TextField tfWord;
ServerSocket ss;
public static void main(String[] args) {
// 界面
Frame f=new Frame("服务端");
/*TextField tfIP=new TextField(15);
TextField tfPort=new TextField(6);*/
ta=new TextArea(20,50);
tfWord=new TextField(45);
Panel pN=new Panel();
Panel pC=new Panel();
Panel pS=new Panel();
BorderLayout bl=new BorderLayout();
/*pN.add(tfIP);
pN.add(tfPort);*/
pC.add(ta);
pS.add(tfWord);
// f.add(pN,bl.NORTH);
f.add(pC,bl.CENTER);
f.add(pS,bl.SOUTH);
f.setSize(500, 500);
f.setLocation(50, 200);
f.setVisible(true);
f.pack();
//退出命令响应
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
new Thread(new ChatServer()).start();//启动接收线程
//添加发送响应
tfWord.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(e.getKeyCode()==e.VK_ENTER)
{
try {
//发送
String strsend=new String(tfWord.getText()+"\n");//储备数据
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
OutputStream os=s.getOutputStream();
DataOutputStream dos=new DataOutputStream(os);
dos.writeUTF(strsend+"\n");
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
}
//接收线程
public void run()
{
try {
//接收客户端
ss=new ServerSocket(9009);
Socket s=ss.accept();
//创建接收流
InputStream is=s.getInputStream();
DataInputStream dis=new DataInputStream(is);
String str=dis.readUTF();//接收数据并存入str
//显示数据
ta.append(str+"\n");//显示在TextArea中
} catch (IOException e) {
e.printStackTrace();
}
}}
**************************
以下是ChatClient程序:
package TCPChat;import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;public class ChatClient extends Thread{
static TextArea ta;
static TextField tfWord;
Socket s;
public static void main(String[] args) {
// 界面
Frame f=new Frame("客户端");
/*TextField tfIP=new TextField(15);
TextField tfPort=new TextField(6);*/
ta=new TextArea(20,50);
tfWord=new TextField(45);
Panel pN=new Panel();
Panel pC=new Panel();
Panel pS=new Panel();
BorderLayout bl=new BorderLayout();
/*pN.add(tfIP);
pN.add(tfPort);*/
pC.add(ta);
pS.add(tfWord);
// f.add(pN,bl.NORTH);
f.add(pC,bl.CENTER);
f.add(pS,bl.SOUTH);
f.setSize(500, 500);
f.setLocation(500, 200);
f.setVisible(true);
f.pack();
//退出命令响应
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
} });
// 启动发送线程
new Thread(new ChatClient()).start();
//接收响应
tfWord.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(e.getKeyCode()==e.VK_ENTER)
{
try {
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
InputStream is=s.getInputStream();
DataInputStream dis=new DataInputStream(is);
String str=dis.readUTF();//接收数据并存入str
//显示
ta.append(str+"\n");
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
}
//发送线程
public void run()
{
/*String strsend=new String(tfWord.getText()+"\n");//储备数据 try {
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
OutputStream os = s.getOutputStream();
DataOutputStream dos=new DataOutputStream(os);
dos.writeUTF(strsend+"\n");
} catch (IOException e) {
e.printStackTrace();
}*/
tfWord.addKeyListener(new KeyAdapter()
{
public void keyReleased(KeyEvent e)
{
if(e.getKeyCode()==e.VK_ENTER)
{
try {
//发送
String strsend=new String(tfWord.getText()+"\n");//储备数据
Socket s=new Socket(InetAddress.getByName("127.0.0.1"),9009);
OutputStream os=s.getOutputStream();
DataOutputStream dos=new DataOutputStream(os);
dos.writeUTF(strsend+"\n");
dos.close();
s.close();
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
});
}
}
我楼主的代码是关于聊天的,那么传输的数据应该是字符串。
推荐使用BufferedReader和BufferedWriter两个类来做处理,当然在发送的时候,要注意flush和写入换行符。
使用DataOutputStream 之类的,会使程序复杂化。
import java.io.*;
import java.net.*;
import java.util.*;public class ChatServer {
boolean started = false;
ServerSocket ss = null;
List<Client> clients = new ArrayList<Client>();
public static void main(String[] args) {
new ChatServer().start();
}
public void start() {
try {
ss = new ServerSocket(10000);
started = true;
} catch (BindException e) {
System.out.println("端口使用中....");
System.out.println("请关掉相关程序并重新运行服务器!");
System.exit(0);
} catch (IOException e) {
e.printStackTrace();
}
try {
while(started) {
Socket s = ss.accept();
Client c = new Client(s);
System.out.println("a client connected!");
new Thread(c).start();
clients.add(c);
//dis.close();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
ss.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
class Client implements Runnable {
private Socket s;
private DataInputStream dis = null;
private DataOutputStream dos = null;
private boolean bConnected = false;
public Client(Socket s) {
this.s = s;
try {
dis = new DataInputStream(s.getInputStream());
dos = new DataOutputStream(s.getOutputStream());
bConnected = true;
} catch (IOException e) {
e.printStackTrace();
}
}
public void send(String str) {
try {
dos.writeUTF(str);
} catch (IOException e) {
clients.remove(this);
System.out.println("对方退出了!我从List里面去掉了!");
//e.printStackTrace();
}
}
public void run() {
try {
while(bConnected) {
String str = dis.readUTF();
System.out.println(str);
for(int i=0; i<clients.size(); i++) {
Client c = clients.get(i);
c.send(str);
//System.out.println(" a string send !");
}
/*
for(Iterator<Client> it = clients.iterator(); it.hasNext(); ) {
Client c = it.next();
c.send(str);
}
*/
/*
Iterator<Client> it = clients.iterator();
while(it.hasNext()) {
Client c = it.next();
c.send(str);
}
*/
}
} catch (EOFException e) {
System.out.println("Client closed!");
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if(dis != null) dis.close();
if(dos != null) dos.close();
if(s != null) {
s.close();
//s = null;
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
}package com.tianlesoftware.basejava;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;public class ChatClient extends Frame {
Socket s = null;
DataOutputStream dos = null;
DataInputStream dis = null;
private boolean bConnected = false; TextField tfTxt = new TextField(); TextArea taContent = new TextArea();
Thread tRecv = new Thread(new RecvThread()); public static void main(String[] args) {
new ChatClient().launchFrame();
} public void launchFrame() {
setLocation(400, 300);
this.setSize(300, 300);
add(tfTxt, BorderLayout.SOUTH);
add(taContent, BorderLayout.NORTH);
pack();
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent arg0) {
disconnect();
System.exit(0);
}
});
tfTxt.addActionListener(new TFListener());
setVisible(true);
connect();
tRecv.start();
}
public void connect() {
try {
s = new Socket("127.0.0.1", 10000);
dos = new DataOutputStream(s.getOutputStream());
dis = new DataInputStream(s.getInputStream());
System.out.println("connected!");
bConnected = true;
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void disconnect() {
try {
dos.close();
dis.close();
s.close();
} catch (IOException e) {
e.printStackTrace();
}
/*
try {
bConnected = false;
tRecv.join();
} catch(InterruptedException e) {
e.printStackTrace();
} finally {
try {
dos.close();
dis.close();
s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
*/
}
private class TFListener implements ActionListener { public void actionPerformed(ActionEvent e) {
String str = tfTxt.getText().trim();
//taContent.setText(str);
tfTxt.setText("");
try {
//System.out.println(s);
dos.writeUTF(str);
dos.flush();
//dos.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
private class RecvThread implements Runnable { public void run() {
try {
while(bConnected) {
String str = dis.readUTF();
//System.out.println(str);
taContent.setText(taContent.getText() + str + '\n');
}
} catch (SocketException e) {
System.out.println("退出了,bye!");
} catch (EOFException e) {
System.out.println("推出了,bye - bye!");
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
以前捣鼓的……,可以参考一下……