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共四个java文件，源代码如下：
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import java.awt.*;
import java.net.*;
import java.awt.event.*;
import java.io.*;
import java.util.Hashtable;
public class ChatArea extends Panel implements ActionListener,Runnable
{
Socket socket=null;
DataInputStream in=null;
DataOutputStream out=null;
Thread threadMessage=null;
TextArea 谈话显示区,私聊显示区=null;
TextField 送出信息=null;
Button 确定,刷新谈话区,刷新私聊区;
Label 提示条=null;
String name=null;
Hashtable listTable;
List listComponent=null;
Choice privateChatList;
int width,height;
public ChatArea(String name,Hashtable listTable,int width,int height)
{
setLayout(null);
setBackground(Color.orange);
this.width=width;
this.height=height;
setSize(width,height);
this.listTable=listTable;
this.name=name;
threadMessage=new Thread(this);
谈话显示区=new TextArea(10,10);
私聊显示区=new TextArea(10,10);
确定=new Button("送出信息到:");
刷新谈话区=new Button("刷新谈话区");
刷新私聊区=new Button("刷新私聊区");
提示条=new Label("双击聊天者可私聊",Label.CENTER);
送出信息=new TextField(28);
确定.addActionListener(this);
送出信息.addActionListener(this);
刷新谈话区.addActionListener(this);
刷新私聊区.addActionListener(this);
listComponent=new List();
listComponent.addActionListener(this);
privateChatList=new Choice();
privateChatList.add("大家(*)");
privateChatList.select(0);
add(谈话显示区);
谈话显示区.setBounds(10,10,(width-120)/2,(height-120));
add(私聊显示区);
私聊显示区.setBounds(10+(width-120)/2,10,(width-120)/2,(height-120));
add(listComponent);
listComponent.setBounds(10+(width-120),10,100,(height-160));
add(提示条);
提示条.setBounds(10+(width-120),10+(height-160),110,40);
Panel pSouth=new Panel();
pSouth.add(送出信息);
pSouth.add(确定);
pSouth.add(privateChatList);
pSouth.add(刷新谈话区);
pSouth.add(刷新私聊区);
add(pSouth);
pSouth.setBounds(10,20+(height-120),width-20,60);
}
public void setName(String s)
{
name=s;
}
public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)
{
this.socket=socket;
this.in=in;
this.out=out;
try
{
threadMessage.start();
}
catch(Exception e)
{
}
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==确定||e.getSource()==送出信息)
{
String message="";
String people=privateChatList.getSelectedItem();
people=people.substring(0,people.indexOf("("));
message=送出信息.getText();
if(message.length()0)
{
try {
if(people.equals("大家"))
{
out.writeUTF("公共聊天内容:"+name+"说:"+message);
}
else
{
out.writeUTF("私人聊天内容:"+name+"悄悄地说:"+message+"#"+people);
}
}
catch(IOException event)
{
}
}
}
else if(e.getSource()==listComponent)
{
privateChatList.insert(listComponent.getSelectedItem(),0);
privateChatList.repaint();
}
else if(e.getSource()==刷新谈话区)
{
谈话显示区.setText(null);
}
else if(e.getSource()==刷新私聊区)
{
私聊显示区.setText(null);
}
}
public void run()
{
while(true)
{
String s=null;
try
{
s=in.readUTF();
if(s.startsWith("聊天内容:"))
{
String content=s.substring(s.indexOf(":")+1);
谈话显示区.append("\n"+content);
}
if(s.startsWith("私人聊天内容:"))
{
String content=s.substring(s.indexOf(":")+1);
私聊显示区.append("\n"+content);
}
else if(s.startsWith("聊天者:"))
{
String people=s.substring(s.indexOf(":")+1,s.indexOf("性别"));
String sex=s.substring(s.indexOf("性别")+2);
listTable.put(people,people+"("+sex+")");
listComponent.add((String)listTable.get(people));
listComponent.repaint();
}
else if(s.startsWith("用户离线:"))
{
String awayPeopleName=s.substring(s.indexOf(":")+1);
listComponent.remove((String)listTable.get(awayPeopleName));
listComponent.repaint();
谈话显示区.append("\n"+(String)listTable.get(awayPeopleName)+"离线");
listTable.remove(awayPeopleName);
}
Thread.sleep(5);
}
catch(IOException e)
{
listComponent.removeAll();
listComponent.repaint();
listTable.clear();
谈话显示区.setText("和服务器的连接已中断\n必须刷新浏览器才能再次聊天");
break;
}
catch(InterruptedException e)
{
}
}
}
}
ChatServer.java
import java.io.*;
import java.net.*;
import java.util.*;
public class ChatServer
{
public static void main(String args[])
{
ServerSocket server=null;
Socket you=null;
Hashtable peopleList;
peopleList=new Hashtable();
while(true)
{
try
{
server=new ServerSocket(6666);
}
catch(IOException e1)
{
System.out.println("正在监听");
}
try {
you=server.accept();
InetAddress address=you.getInetAddress();
System.out.println("用户的IP:"+address);
}
catch (IOException e)
{
}
if(you!=null)
{
Server_thread peopleThread=new Server_thread(you,peopleList);
peopleThread.start();
}
else {
continue;
}
}
}
}
class Server_thread extends Thread
{
String name=null,sex=null;
Socket socket=null;
File file=null;
DataOutputStream out=null;
DataInputStream in=null;
Hashtable peopleList=null;
Server_thread(Socket t,Hashtable list)
{
peopleList=list;
socket=t;
try {
in=new DataInputStream(socket.getInputStream());
out=new DataOutputStream(socket.getOutputStream());
}
catch (IOException e)
{
}
}
public void run()
{
while(true)
{ String s=null;
try
{
s=in.readUTF();
if(s.startsWith("姓名:"))
{
name=s.substring(s.indexOf(":")+1,s.indexOf("性别"));
sex=s.substring(s.lastIndexOf(":")+1);
boolean boo=peopleList.containsKey(name);
if(boo==false)
{
peopleList.put(name,this);
out.writeUTF("可以聊天:");
Enumeration enum=peopleList.elements();
while(enum.hasMoreElements())
{
Server_thread th=(Server_thread)enum.nextElement();
th.out.writeUTF("聊天者:"+name+"性别"+sex);
if(th!=this)
{
out.writeUTF("聊天者:"+th.name+"性别"+th.sex);
}
}
}
else
{
out.writeUTF("不可以聊天:");
}
}
else if(s.startsWith("公共聊天内容:"))
{
String message=s.substring(s.indexOf(":")+1);
Enumeration enum=peopleList.elements();
while(enum.hasMoreElements())
{
((Server_thread)enum.nextElement()).out.writeUTF("聊天内容:"+message);
}
}
else if(s.startsWith("用户离开:"))
{
Enumeration enum=peopleList.elements();
while(enum.hasMoreElements())
{ try
{
Server_thread th=(Server_thread)enum.nextElement();
if(th!=thisth.isAlive())
{
th.out.writeUTF("用户离线:"+name);
}
}
catch(IOException eee)
{
}
}
peopleList.remove(name);
socket.close();
System.out.println(name+"用户离开了");
break;
}
else if(s.startsWith("私人聊天内容:"))
{
String 悄悄话=s.substring(s.indexOf(":")+1,s.indexOf("#"));
String toPeople=s.substring(s.indexOf("#")+1);
Server_thread toThread=(Server_thread)peopleList.get(toPeople);
if(toThread!=null)
{
toThread.out.writeUTF("私人聊天内容:"+悄悄话);
}
else
{
out.writeUTF("私人聊天内容:"+toPeople+"已经离线");
}
}
}
catch(IOException ee)
{
Enumeration enum=peopleList.elements();
while(enum.hasMoreElements())
{ try
{
Server_thread th=(Server_thread)enum.nextElement();
if(th!=thisth.isAlive())
{
th.out.writeUTF("用户离线:"+name);
}
}
catch(IOException eee)
{
}
}
peopleList.remove(name);
try
{
socket.close();
}
catch(IOException eee)
{
}
System.out.println(name+"用户离开了");
break;
}
}
}
}
import java.awt.*;
import java.io.*;
import java.net.*;
import java.applet.*;
import java.util.Hashtable;
ClientChat.java
public class ClientChat extends Applet implements Runnable
{
Socket socket=null;
DataInputStream in=null;
DataOutputStream out=null;
InputNameTextField 用户提交昵称界面=null;
ChatArea 用户聊天界面=null;
Hashtable listTable;
Label 提示条;
Panel north, center;
Thread thread;
public void init()
{
int width=getSize().width;
int height=getSize().height;
listTable=new Hashtable();
setLayout(new BorderLayout());
用户提交昵称界面=new InputNameTextField(listTable);
int h=用户提交昵称界面.getSize().height;
用户聊天界面=new ChatArea("",listTable,width,height-(h+5));
用户聊天界面.setVisible(false);
提示条=new Label("正在连接到服务器,请稍等...",Label.CENTER);
提示条.setForeground(Color.red);
north=new Panel(new FlowLayout(FlowLayout.LEFT));
center=new Panel();
north.add(用户提交昵称界面);
north.add(提示条);
center.add(用户聊天界面);
add(north,BorderLayout.NORTH);
add(center,BorderLayout.CENTER);
validate();
}
public void start()
{
if(socket!=nullin!=nullout!=null)
{ try
{
socket.close();
in.close();
out.close();
用户聊天界面.setVisible(false);
}
catch(Exception ee)
{
}
}
try
{
socket = new Socket(this.getCodeBase().getHost(), 6666);
in=new DataInputStream(socket.getInputStream());
out=new DataOutputStream(socket.getOutputStream());
}
catch (IOException ee)
{
提示条.setText("连接失败");
}
if(socket!=null)
{
InetAddress address=socket.getInetAddress();
提示条.setText("连接:"+address+"成功");
用户提交昵称界面.setSocketConnection(socket,in,out);
north.validate();
}
if(thread==null)
{
thread=new Thread(this);
thread.start();
}
}
public void stop()
{
try
{
socket.close();
thread=null;
}
catch(IOException e)
{
this.showStatus(e.toString());
}
}
public void run()
{
while(thread!=null)
{
if(用户提交昵称界面.get能否聊天()==true)
{
用户聊天界面.setVisible(true);
用户聊天界面.setName(用户提交昵称界面.getName());
用户聊天界面.setSocketConnection(socket,in,out);
提示条.setText("祝聊天愉快!");
center.validate();
break;
}
try
{
Thread.sleep(100);
}
catch(Exception e)
{
}
}
}
}
InputNameTextField。java
import java.awt.*;
import java.net.*;
import java.awt.event.*;
import java.io.*;
import java.util.Hashtable;
public class InputNameTextField extends Panel implements ActionListener,Runnable
{
TextField nameFile=null;
String name=null;
Checkbox male=null,female=null;
CheckboxGroup group=null;
Button 进入聊天室=null,退出聊天室=null;
Socket socket=null;
DataInputStream in=null;
DataOutputStream out=null;
Thread thread=null;
boolean 能否聊天=false;
Hashtable listTable;
public InputNameTextField(Hashtable listTable)
{
this.listTable=listTable;
nameFile=new TextField(10);
group=new CheckboxGroup();
male=new Checkbox("男",true,group);
female=new Checkbox("女",false,group);
进入聊天室=new Button("进入");
退出聊天室=new Button("退出");
进入聊天室.addActionListener(this);
退出聊天室.addActionListener(this);
thread=new Thread(this);
add(new Label("昵称:"));
add(nameFile);
add(male);
add(female);
add(进入聊天室);
add(退出聊天室);
退出聊天室.setEnabled(false);
}
public void set能否聊天(boolean b)
{
能否聊天=b;
}
public boolean get能否聊天()
{
return 能否聊天;
}
public String getName()
{
return name;
}
public void setName(String s)
{
name=s;
}
public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)
{
this.socket=socket;
this.in=in;
this.out=out;
try{
thread.start();
}
catch(Exception e)
{
nameFile.setText(""+e);
}
}
public Socket getSocket()
{
return socket;
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==进入聊天室)
{
退出聊天室.setEnabled(true);
if(能否聊天==true)
{
nameFile.setText("您正在聊天:"+name);
}
else
{
this.setName(nameFile.getText());
String sex=group.getSelectedCheckbox().getLabel();
if(socket!=nullname!=null)
{
try{
out.writeUTF("姓名:"+name+"性别:"+sex);
}
catch(IOException ee)
{
nameFile.setText("没有连通服务器"+ee);
}
}
}
}
if(e.getSource()==退出聊天室)
{
try
{
out.writeUTF("用户离开:");
}
catch(IOException ee)
{
}
}
}
public void run()
{
String message=null;
while(true)
{
if(in!=null)
{
try
{
message=in.readUTF();
}
catch(IOException e)
{
nameFile.setText("和服务器断开"+e);
}
}
if(message.startsWith("可以聊天:"))
{
能否聊天=true;
break;
}
else if(message.startsWith("聊天者:"))
{
String people=message.substring(message.indexOf(":")+1);
listTable.put(people,people);
}
else if(message.startsWith("不可以聊天:"))
{
能否聊天=false;
nameFile.setText("该昵称已被占用");
}
}
}
}
import java.io.InputStream;
import java.io.DataInputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.DataOutputStream;
import java.io.BufferedReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.io.IOException;
import java.util.Date;
class Server
{
public Server()
{
try
{
ServerSocket s=new ServerSocket(8888);
Socket ss=s.accept();
OutputStream out=ss.getOutputStream();
DataOutputStream dout=new DataOutputStream(out);
InputStream in=ss.getInputStream();
DataInputStream din=new DataInputStream(in);
System.out.print(din.readUTF()+"!");
dout.writeUTF("你已经连接到服务器"+"\t"+"你的地址："+ss.getInetAddress()+"\t"
+"你的链接端口："+ss.getLocalPort()+"\n");
new ReadMessage(din).start();
new SendMessage(dout).start();
}
catch (IOException e)
{
e.printStackTrace();
}
}
public static void main(String[] args)
{
new Server();
}
}
//接受客户端信息
class ReadMessage extends Thread
{
private DataInputStream din;
public ReadMessage(DataInputStream din)
{
this.din=din;
}
public void run()
{
String str;
try
{
while (true)
{
str=din.readUTF();
System.out.println(new Date().toLocaleString()+"客户端说："+str);
if (str.equals("bye"))
{
System.out.println("客户端下线！");
break;
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
// 发出服务器信息
class SendMessage extends Thread
{
private DataOutputStream dout;
public SendMessage(DataOutputStream dout)
{
this.dout=dout;
}
public void run()
{
InputStreamReader inr=new InputStreamReader(System.in);
BufferedReader buf=new BufferedReader(inr);
String str;
try
{
while(true)
{
str=buf.readLine();
dout.writeUTF(str);
if (str.equals("bye"))
{
System.out.println("服务器退出！");
System.exit(1);
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
import java.io.InputStream;
import java.io.DataInputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.DataOutputStream;
import java.io.BufferedReader;
import java.net.Socket;
import java.io.IOException;
import java.util.Date;
class Client
{
public Client()
{
try
{
Socket s=new Socket("192.168.1.2",8888);
InputStream in=s.getInputStream();
DataInputStream din=new DataInputStream(in);
OutputStream out=s.getOutputStream();
DataOutputStream dout=new DataOutputStream(out);
dout.writeUTF("服务器你好！我是客户端");
System.out.println(din.readUTF());
new Thread(new SenderMessage(dout)).start();
new Thread(new ReaderMessage(din)).start();
}
catch (IOException e)
{
e.printStackTrace();
}
}
public static void main(String[] args)
{
new Client();
}
}
class ReaderMessage implements Runnable
{
private DataInputStream din;
public ReaderMessage(DataInputStream din)
{
this.din=din;
}
public void run()
{
String str;
try
{
while(true)
{
str=din.readUTF();
System.out.println(new Date().toLocaleString()+"服务器说："+str);
if (str.equals("bye"))
{
System.out.println("服务器已经关闭，此程序自动退出！");
break;
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
class SenderMessage implements Runnable
{
private DataOutputStream dout;
public SenderMessage(DataOutputStream dout)
{
this.dout=dout;
}
public void run()
{
String str;
InputStreamReader inf=new InputStreamReader(System.in);
BufferedReader buf=new BufferedReader(inf);
try
{
while (true)
{
str=buf.readLine();
dout.writeUTF(str);
if (str.equals("bye"))
{
System.out.println("客户端自己退出！");
System.exit(1);
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
话说网上真的好多啊...
package client;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.util.Date;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class ClientFrame extends JFrame{
private JTextArea allmsg;
private JTextField welcome,copyright,chatmsg;
private JButton send;
private JScrollPane js;
private boolean isConnected = true;
public DataOutputStream out;
public DataInputStream in;
public Socket s = null;
String nic; /* -- 保存用户昵称 --*/
/**
* 初始化客户端资源
* 1.获取从LoginFrame传递过来的参数
* 2.初始化界面元素
* 3.初始化通信所需要的资源 EG：输入/输出流(DataInputStream/DataOutputStream)
* */
public ClientFrame(String name,Socket socket)
{
this.setSize(310,660);
this.setLocation(290,50);
this.setTitle("聊天室客户端"+name+"");/* -- 指定窗口的标题 --*/
this.s = socket;/* -- 接收从LoginFrame中传递过来的Socket --*/
this.nic = name+" 说： ";
welcome = new JTextField(" "+name+" 欢迎您来到聊天室 ",100);
welcome.setBackground(Color.blue);
welcome.setEnabled(false);
copyright = new JTextField(" ----- all copyright @ TOP-king -----");
copyright.setEnabled(false);
allmsg = new JTextArea();
allmsg.setEditable(false);
allmsg.append(" 系统消息: 欢迎登录在线聊天室 \n");
js = new JScrollPane(allmsg);//为JTextArea添加滚动条
chatmsg = new JTextField("在此输入聊天信息");
chatmsg.addActionListener(new listen());
send = new JButton("发送");
send.addActionListener(new listen());/* -- 添加事件监听器 --*/
try {
out = new DataOutputStream(s.getOutputStream());
in = new DataInputStream(s.getInputStream());
} catch (IOException e) {JOptionPane.showMessageDialog(null, "系统异常","错误",JOptionPane.OK_CANCEL_OPTION);}
addcomponettocontainer();
/* -- 当用户关闭窗口时进行相关的处理 eg:Socket Data(Input/Output)Stream 的关闭--*/
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we)
{
sendmsg("quitlogout");/* -- 向服务器端发送关闭信息 --*/
isConnected = false;
destory();/* -- 销毁窗口资源 --*/
}
});
new Thread(new linread()).start();/* -- 启动读取信息线程 --*/
}
public void addcomponettocontainer()
{
Container c = this.getContentPane();
c.setLayout(null);
welcome.setBounds(75,10,150,20);
js.setBounds(10,50,280,500);
chatmsg.setBounds(10,560,180,30);
send.setBounds(220,560,70,30);
copyright.setBounds(10,600,280,20);
c.add(welcome);
c.add(js);
c.add(chatmsg);
c.add(send);
c.add(copyright);
this.setVisible(true);
this.setResizable(false);
}
class listen implements ActionListener
{
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==send||e.getSource()==chatmsg)
{
String msg = chatmsg.getText().trim();
if("".equals(msg))
{
JOptionPane.showMessageDialog(null,"发送信息不能为空!","错误",JOptionPane.OK_OPTION);
}
else
{sendmsg((new Date()).toLocaleString()+"\n"+nic+msg+"\n");chatmsg.setText("");}
}
}
}
/* -- 向服务器端发送信息 --*/
public void sendmsg(String m)
{
if(isConnected)//如果socket的输出流没关闭
{
try {
out.writeUTF(m);
} catch (IOException e) {
JOptionPane.showMessageDialog(null,"发送信息失败!(系统异常)","错误",JOptionPane.OK_OPTION);
}
}
else
{
JOptionPane.showMessageDialog(null,"发送信息失败!(服务器关闭/网络故障)","错误",JOptionPane.OK_OPTION);
}
}
/* -- 读取信息线程 --*/
class linread implements Runnable
{
public void run()
{
read();
}
public void read()
{
while(isConnected)
{
try {
String msg = in.readUTF();
if("SYSTEM_CLOSED".equals(msg))
{
JOptionPane.showMessageDialog(null,"读取消息失败(服务器关闭/网络故障)！","错误",JOptionPane.OK_OPTION);
isConnected = false;
}
else
allmsg.append(msg+"\n");
} catch (IOException e) {
}
}//end while
JOptionPane.showMessageDialog(null,"读取消息失败(服务器关闭/网络故障)！","错误",JOptionPane.OK_OPTION);
}//end read()
}
public void destory()
{
try {
this.out.close();
this.in.close();
this.s.close();
} catch (IOException e) {
}
this.dispose();
}
}
======================================================
package client;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
public class LoginFrame extends JFrame{
private JTextField name;
private JTextField ip;
private JButton ok,cancle;
public Socket socket;
public LoginFrame()
{
super("登录框");
this.setSize(400,80);
this.setLocation(100,100);
name = new JTextField("昵称");
ip = new JTextField("127.0.0.1");
ok = new JButton("登录");
cancle = new JButton("取消");
ok.addActionListener(new listenEvent());
cancle.addActionListener(new listenEvent());
//建立容器
addcomponettocontainer();
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
/**
* 建立容器及控件
*/
public void addcomponettocontainer()
{
Container c = this.getContentPane();
c.setLayout(null);
name.setBounds(10,10,100,30);
ip.setBounds(120,10,100,30);
ok.setBounds(230,10,70,30);
cancle.setBounds(310,10,70,30);
c.add(name);
c.add(ip);
c.add(ok);
c.add(cancle);
this.setVisible(true);
this.setResizable(false);
}
public class listenEvent implements ActionListener
{
public void actionPerformed(ActionEvent event) {
// TODO Auto-generated method stub
if(event.getSource()==ok)
{
String n = name.getText().trim();
String i = ip.getText().trim();
if("".equals(n)||"".equals(i))
{
JOptionPane.showMessageDialog(null,"昵称、IP不能够为空!","错误",JOptionPane.OK_OPTION);
}
else{login(n,i);}
}
if(event.getSource()==cancle)
{
name.setText("");
ip.setText("");
}
}
}
/**
* 进行登录
* @param name
* @param ip
*/
public void login(String name,String ip)
{
try {
socket = new Socket(ip,7777);
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
out.writeUTF(name);
out.flush();//强制输出缓存中的内容
//out.close();
new ClientFrame(name,socket);
destroywindow();
} catch (UnknownHostException e) {
JOptionPane.showMessageDialog(null,"找不到主机地址(IP错误/网络故障)！","错误",JOptionPane.OK_OPTION);
} catch (IOException e) {
}
}
public void destroywindow()
{
this.dispose();
}
public static void main(String[] args)
{
new LoginFrame();
}
}
==================================================
package server;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Date;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class ServerFrame extends JFrame{
/**
*
*/
private static final long serialVersionUID = 1L;
private JTextArea allmsg;
private JTextField currnum,totalnum,copyright,chatmsg;
private JButton send;
private JScrollPane js;
int num1,num2,port;/* -- num1:当前在线人数 num2:总上线人数 port:服务端口号 --*/
private ServerSocket ss;
ArrayListuser lists;//存放所有在线用户
public ServerFrame()
{
super("聊天室服务器端");
this.setSize(310,660);
this.setLocation(200,50);
lists = new ArrayListuser();
num1 = num2 =0;
port = 7777;
currnum = new JTextField(" 当前在线人数： "+num1);
currnum.setEnabled(false);
totalnum = new JTextField(" 上线总人数： "+num2);
totalnum.setEnabled(false);
copyright = new JTextField(" ----- all copyright @ TOP-king -----");
copyright.setEnabled(false);
allmsg = new JTextArea();
allmsg.append(" --------------- 系统消息 --------------\n");
allmsg.setEditable(false);
allmsg.setLineWrap(true); //允许自动换行
js = new JScrollPane(allmsg);//为JTextArea添加滚动条
chatmsg = new JTextField("在此输入系统信息");
chatmsg.addActionListener(new ActionListener(){
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent arg0) {
String str = chatmsg.getText().trim();
if(!"".equals(str))
{sendmsg((new Date()).toLocaleString()+" -- 系统消息： "+str);chatmsg.setText("");}
else
JOptionPane.showMessageDialog(null, "消息不能为空","错误",JOptionPane.OK_OPTION);
chatmsg.setText("");/* -- 发送信息后，将输入栏中的信息清空 -- */
}
});
send = new JButton("发送");
send.addActionListener(new ActionListener(){
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent arg0) {
String str = chatmsg.getText().trim();
if(!"".equals(str))
{sendmsg((new Date()).toLocaleString()+" -- 系统消息： "+str);chatmsg.setText("");}
else
JOptionPane.showMessageDialog(null, "消息不能为空","错误",JOptionPane.OK_OPTION);
chatmsg.setText("");/* -- 发送信息后，将输入栏中的信息清空 -- */
}
});
//建立容器
addcomponettocontainer();
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we)
{
sendmsg("SYSTEM_CLOSED");/* -- 向客户端发送服务器关闭信息 -- */
destory();
}
});
start(); /* -- 启动连接服务 -- */
}
public void addcomponettocontainer()
{
//Container建立容器
Container c = this.getContentPane();
c.setLayout(null);
currnum.setBounds(20,15,130,20);
totalnum.setBounds(155,15,125,20);
js.setBounds(10,50,280,500);
chatmsg.setBounds(10,560,180,30);
send.setBounds(220,560,70,30);
copyright.setBounds(10,600,280,20);
c.add(currnum);
c.add(totalnum);
c.add(js);
c.add(chatmsg);
c.add(send);
c.add(copyright);
this.setVisible(true);
this.setResizable(false);
}
/**
* start()方法监听客户的连接
* 并且保存客户端的相关信息EG：用户昵称、用户所使用的Socket
* 用户连接到服务器成功之后，将其保存到用户列表中，并为该用户启动一个线程用于通信 */
@SuppressWarnings("deprecation")
public void start()
{
boolean isStarted = false;/* -- 用于标记服务器是否已经正常启动 -- */
try {
this.ss = new ServerSocket(port);
isStarted = true;
this.allmsg.append((new Date()).toLocaleString()+" 服务器启动 @ 端口: "+port+"\n");
while(isStarted)
{
Socket client = this.ss.accept(); /* -- 监听客户端的连接 -- */
DataInputStream in = new DataInputStream(client.getInputStream());
String name = in.readUTF();
user u = new user();
u.name = name;
u.socket = client;
lists.add(u); //将该用户加到列表中去
num1++;
num2++;
currnum.setText(" 当前在线人数： "+num1);
totalnum.setText(" 上线总人数： "+num2);
this.allmsg.append((new Date()).toLocaleString()+" : "+u.name+" 登录 \n");
new Thread(new ClientThread(u)).start();/* -- 为该用户启动一个通信线程 -- */
}
} catch (IOException e) {
System.out.println("服务器已经启动......");
System.exit(0);
}
}
/**
* 通信线程主要功能包括：
* 1.监听客户端输入的信息
* 2.将接收到的信息转发给其他用户 */
class ClientThread implements Runnable
{
user user = null;
boolean isConnected = true;
DataInputStream dis = null;
DataOutputStream dos = null;
public ClientThread(user u)
{
this.user = u;
try {
this.dis = new DataInputStream(this.user.socket.getInputStream());
this.dos = new DataOutputStream(this.user.socket.getOutputStream());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void run()
{
readmsg();
}
/* -- 读取客户的聊天信息 -- */
@SuppressWarnings("deprecation")
public void readmsg()
{
while(isConnected)
{
try {
String msg = dis.readUTF();
if("quitlogout".equals(msg))//当用户关闭客户端窗口时，发送quit字符串 表示用户已经退出
{
num1--;
try{
this.dis.close();
this.dos.close();
this.user.socket.close();
this.isConnected = false;
}catch(IOException ioe)
{
ioe.printStackTrace();
}finally{
this.isConnected = false;
if(dis!=null) this.dis.close();
if(dos!=null) this.dos.close();
if(this.user.socket!=null) this.user.socket.close();
}
lists.remove(this.user);//从列表中删除该用户
currnum.setText(" 当前在线人数： "+num1);
allmsg.append((new Date()).toLocaleString()+" : "+this.user.name+" 退出\n");
}
else
sendmsg(msg);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/* -- 将信息进行转发 -- */
public void sendmsg(String msg)
{
user us = new user();
DataOutputStream os = null;
if(lists.size()0)
{
for(int i=0;ilists.size();i++)
{
us = lists.get(i);
try {
os = new DataOutputStream(us.socket.getOutputStream());
os.writeUTF(msg);
} catch (IOException e) {
e.printStackTrace();
}
}
}
else
JOptionPane.showMessageDialog(null, "当前无用户在线。发送消息失败","失败",JOptionPane.OK_OPTION);
}
public void destory()
{
try {
this.ss.close();
} catch (IOException e) {
e.printStackTrace();
}
this.dispose();
}
public static void main(String[] args)
{
new ServerFrame();
}
}
=================================================
package server;
import java.net.*;
public class user {
String name;
Socket socket;
}
/**
* 基于UDP协议的聊天程序
*
* 2007.9.18
* */
//导入包
import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.net.*;
public class Chat extends JFrame implements ActionListener
{
//广播地址或者对方的地址
public static final String sendIP = "172.18.8.255";
//发送端口9527
public static final int sendPort = 9527;
JPanel p = new JPanel();
List lst = new List(); //消息显示
JTextField txtIP = new JTextField(18); //填写IP地址
JTextField txtMSG = new JTextField(20); //填写发送消息
JLabel lblIP = new JLabel("IP地址:");
JLabel lblMSG = new JLabel("消息:");
JButton btnSend = new JButton("发送");
byte [] buf;
//定义DatagramSocket的对象必须进行异常处理
//发送和接收数据报包的套接字
DatagramSocket ds = null;
//=============构造函数=====================
public Chat()
{
CreateInterFace();
//注册消息框监听器
txtMSG.addActionListener(this);
btnSend.addActionListener(this);
try
{
//端口:9527
ds =new DatagramSocket(sendPort);
}
catch(Exception ex)
{
ex.printStackTrace();
}
//============接受消息============
//匿名类
new Thread(new Runnable()
{
public void run()
{
byte buf[] = new byte[1024];
//表示接受数据报包
while(true)
{
try
{
DatagramPacket dp = new DatagramPacket(buf,1024,InetAddress.getByName(txtIP.getText()),sendPort);
ds.receive(dp);
lst.add("【消息来自】◆" + dp.getAddress().getHostAddress() + "◆"+"【说】:" + new String (buf,0,dp.getLength()) /*+ dp.getPort()*/,0);
}
catch(Exception e)
{
if(ds.isClosed())
{
e.printStackTrace();
}
}
}
}
}).start();
//关闭窗体事件
this.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent w)
{
System.out.println("test");
int n=JOptionPane.showConfirmDialog(null,"是否要退出?","退出",JOptionPane.YES_NO_OPTION);
if(n==JOptionPane.YES_OPTION)
{
dispose();
System.exit(0);
ds.close();//关闭ds对象//关闭数据报套接字
}
}
});
}
//界面设计布局
public void CreateInterFace()
{
this.add(lst,BorderLayout.CENTER);
this.add(p,BorderLayout.SOUTH);
p.add(lblIP);
p.add(txtIP);
p.add(lblMSG);
p.add(txtMSG);
p.add(btnSend);
txtIP.setText(sendIP);
//背景颜色
lst.setBackground(Color.yellow);
//JAVA默认风格
this.setUndecorated(true);
this.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);
this.setSize(600,500);
this.setTitle("〓聊天室〓");
this.setResizable(false);//不能改变窗体大小
this.setLocationRelativeTo(null);//窗体居中
this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
this.setVisible(true);
txtMSG.requestFocus();//消息框得到焦点
}
//===============================Main函数===============================
public static void main(String[]args)
{
new Chat();
}
//================================发送消息===============================
//消息框回车发送消息事件
public void actionPerformed(ActionEvent e)
{
//得到文本内容
buf = txtMSG.getText().getBytes();
//判断消息框是否为空
if (txtMSG.getText().length()==0)
{
JOptionPane.showMessageDialog(null,"发送消息不能为空","提示",JOptionPane.WARNING_MESSAGE);
}
else{
try
{
InetAddress address = InetAddress.getByName(sendIP);
DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);
ds.send(dp);
}
catch(Exception ex)
{
ex.printStackTrace();
}
}
txtMSG.setText("");//清空消息框
//点发送按钮发送消息事件
if(e.getSource()==btnSend)
{
buf = txtMSG.getText().getBytes();
try
{
DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);
}
catch(Exception ex)
{
ex.printStackTrace();
}
txtMSG.setText("");//清空消息框
txtMSG.requestFocus();
}
}
}
一 是不是在同一工程目录下， 包名和.有没有错 二 有没有换过JDK 如果中途换了JDK 那么请把你以前的JDK卸掉在装 有时JDK的class -path 会有冲突sharenyingye考虑采纳一下。有空到软件测试基地,365testing
这个是客户端
import java.net.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
public class client extends Frame implements ActionListener{
int i=1;Frame f;
TextField ip,port;
Label Lip,Lport;
Button connect,exit;
public static void main(String args[])
{client c1 = new client();
c1.init();
}
public void init()
{
f=new Frame("client connection");
f.setLayout(new FlowLayout());
ip =new TextField("localhost");
port =new TextField("8189",5);
Lip=new Label("ip address");
Lport=new Label("port");
connect=new Button("connect");
exit=new Button("exit");
connect.addActionListener(this);
exit.addActionListener(this);
f.add(Lip);
f.add(ip);
f.add(Lport);
f.add(port);
f.add(connect);
f.add(exit);
f.setSize(500,60);
f.setVisible(true);
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==exit)
System.exit(0);
if(e.getSource()==connect)
{
new Thread(new threadclient(ip.getText(),port.getText(),i)).start();
i++;
}
}
}
class threadclient extends Frame implements Runnable,ActionListener{
String ip,port;
int no;
Frame f;
TextArea ta;
TextArea name;
TextField tf;
Button send,bye;
InputStream ins;
Socket s;
PrintStream out1;
BufferedReader in;
BufferedWriter out;
threadclient(String n,String m,int i)
{
ip=n;
port=m;
no=i;
}
public void run(){
f=new Frame("client NO." +no);
f.setLayout(new FlowLayout());
ta=new TextArea("",10,30,TextArea.SCROLLBARS_BOTH);
tf=new TextField("",20);
send=new Button("send");
bye=new Button("bye");
send.addActionListener(this);
bye.addActionListener(this);
f.add(ta);
f.add(tf);
f.add(send);
f.add(bye);
f.setSize(300,300);
f.setVisible(true);
Integer tmp=new Integer(port);
int portint =tmp.intValue();
try
{
s=new Socket(ip,portint);
in=new BufferedReader(new InputStreamReader(s.getInputStream()));
out1=new PrintStream(s.getOutputStream());
ta.append(in.readLine()+"\n");
}catch(Exception e)
{
System.out.println(e.getMessage()+" ss");
}
}
public void send(String txt){
try{
out1.println(txt);
out1.flush();
ta.append(in.readLine()+"\n");
}catch(IOException e)
{
System.out.println(e.getMessage()+"send");
}
}
public void actionPerformed(ActionEvent e){
if(e.getSource()==bye){
send("BYE");
System.exit(0);
}
if (e.getSource()==send)
send(tf.getText());
}
}
这个是服务器
import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.HashMap;
import java.util.Map;
public class server {
private static MapString,Socket clientMap=new HashMapString,Socket();
public static void main(String[] args) {
int i = 1;
try {
ServerSocket s = new ServerSocket(8189);
for (;;) {
Socket incoming = s.accept();
System.out.println("连接成功" + i);
ThreadedEchoHandler teh=new ThreadedEchoHandler(incoming, i);
teh.start();
String name=teh.getClientname();
clientMap.put(name,incoming);
i++;
}
} catch (Exception e) {
System.out.println(e);
}
}
}
class ThreadedEchoHandler extends Thread {
Frame f;
TextArea ta;
TextField tf;
Button send, bye;
InputStream ins;
Socket s;
PrintStream out1;
BufferedReader in;
PrintWriter out;
public ThreadedEchoHandler(Socket i, int c) {
incoming = i;
counter = c;
f=new Frame("server");
f.setLayout(new FlowLayout());
ta=new TextArea("",10,30,TextArea.SCROLLBARS_BOTH);
tf=new TextField("",20);
send=new Button("send");
bye=new Button("bye");
send.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent arg0) {
send(tf.getText());
}
});
bye.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent arg0) {
send("bye");
}
});
f.add(ta);
f.add(tf);
f.add(send);
f.add(bye);
f.setSize(300,300);
f.setVisible(true);
}
public String getClientname() {
try {
in = new BufferedReader(new InputStreamReader(
incoming.getInputStream()));
out = new PrintWriter(incoming.getOutputStream(), true);
return in.readLine();
} catch (IOException e) {
System.out.println(e.getMessage()+"get");
}
return null;
}
public void send(String context){
out.println(context);
out.flush();
}
public void run() {
try {
boolean done = false;
while (!done) {
String str = in.readLine();
if (str == null)
done = true;
else {
out.println("Echo(" + counter + "):" + str);
ta.append("Echo(" + counter + "):" + str+"\n");
if (str.trim().equals("BYE"))
done = true;
}
}
incoming.close();
} catch (Exception e) {
System.out.println(e.getMessage()+"run");
}
}
private Socket incoming;
private int counter;
}
这个鸟东西是个新手写的。唉，太烂了，我无力吐槽。