这期内容当中小编将会给大家带来有关使用java怎么实现一个聊天室功能，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。
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源码：
public class ClientFrame extends Frame {
private TextField textFieldContent = new TextField();
private TextArea textAreaContent = new TextArea();
private Socket socket = null;
private OutputStream out = null;
private DataOutputStream dos = null;
private InputStream in = null;
private DataInputStream dis = null;
private boolean flag = false;
public static void main(String[] args) {
new ClientFrame().init();
}
private void init() {
this.setSize(300, 300);
setLocation(250, 150);
setVisible(true);
setTitle("WeChatRoom");
// 添加控件
this.add(textAreaContent);
this.add(textFieldContent, BorderLayout.SOUTH);
textAreaContent.setFocusable(false);
pack();
// 关闭事件
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.out.println("用户试图关闭窗口");
disconnect();
System.exit(0);
}
});
// textFieldContent添加回车事件
textFieldContent.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
onClickEnter();
}
});
// 建立连接
connect();
new Thread(new ReciveMessage()).start();
}
private class ReciveMessage implements Runnable {
@Override
public void run() {
flag = true;
try {
while (flag) {
String message = dis.readUTF();
textAreaContent.append(message + "\n");
}
} catch (EOFException e) {
flag = false;
System.out.println("客户端已关闭");
// e.printStackTrace();
} catch (SocketException e) {
flag = false;
System.out.println("客户端已关闭");
// e.printStackTrace();
} catch (IOException e) {
flag = false;
System.out.println("接受消息失败");
e.printStackTrace();
}
}
}
private void onClickEnter() {
String message = textFieldContent.getText().trim();
if (message != null && !message.equals("")) {
String time = new SimpleDateFormat("h:m:s").format(new Date());
textAreaContent.append(time + "\n" + message + "\n");
textFieldContent.setText("");
sendMessageToServer(message);
}
}
private void sendMessageToServer(String message) {
try {
dos.writeUTF(message);
dos.flush();
} catch (IOException e) {
System.out.println("发送消息失败");
e.printStackTrace();
}
}
private void connect() {
try {
socket = new Socket("localhost", 8888);
out = socket.getOutputStream();
dos = new DataOutputStream(out);
in = socket.getInputStream();
dis = new DataInputStream(in);
} catch (UnknownHostException e) {
System.out.println("申请链接失败");
e.printStackTrace();
} catch (IOException e) {
System.out.println("申请链接失败");
e.printStackTrace();
}
}
private void disconnect() {
flag = false;
if (dos != null) {
try {
dos.close();
} catch (IOException e) {
System.out.println("dos关闭失败");
e.printStackTrace();
}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {
System.out.println("dos关闭失败");
e.printStackTrace();
}
}
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
System.out.println("socket关闭失败");
e.printStackTrace();
}
;
}
}
}package com.chat;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.BindException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.List;
public class ChatServer {
private List clients = new ArrayList<>();
public static void main(String[] args) {
new ChatServer().init();
}
private void init() {
System.out.println("服务器已开启");
// BindException
ServerSocket ss = null;
Socket socket = null;
try {
ss = new ServerSocket(8888);
} catch (BindException e) {
System.out.println("端口已被占用");
e.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
try {
Client client = null;
while (true) {
socket = ss.accept();
System.out.println("客户驾到");
client = new Client(socket);
clients.add(client);
new Thread(client).start();
}
} catch (IOException e) {
e.printStackTrace();
}
}
private class Client implements Runnable {
private Socket socket = null;
InputStream in = null;
DataInputStream din = null;
OutputStream out = null;
DataOutputStream dos = null;
boolean flag = true;
public Client(Socket socket) {
this.socket = socket;
try {
in = socket.getInputStream();
din = new DataInputStream(in);
} catch (IOException e) {
System.out.println("接受消息失败");
e.printStackTrace();
}
}
public void run() {
String message;
try {
while (flag) {
message = din.readUTF();
// System.out.println("客户说：" + message);
forwordToAllClients(message);
}
} catch (SocketException e) {
flag = false;
System.out.println("客户下线");
clients.remove(this);
// e.printStackTrace();
} catch (EOFException e) {
flag = false;
System.out.println("客户下线");
clients.remove(this);
// e.printStackTrace();
} catch (IOException e) {
flag = false;
System.out.println("接受消息失败");
clients.remove(this);
e.printStackTrace();
}
if (din != null) {
try {
din.close();
} catch (IOException e) {
System.out.println("din关闭失败");
e.printStackTrace();
}
}
if (in != null) {
try {
in.close();
} catch (IOException e) {
System.out.println("din关闭失败");
e.printStackTrace();
}
}
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
System.out.println("din关闭失败");
e.printStackTrace();
}
}
}
private void forwordToAllClients(String message) throws IOException {
for (Client c : clients) {
if (c != this) {
out = c.socket.getOutputStream();
dos = new DataOutputStream(out);
forwordToClient(message);
}
}
}
private void forwordToClient(String message) throws IOException {
dos.writeUTF(message);
dos.flush();
System.out.println("转发成功！");
}
}
} 上述就是小编为大家分享的使用java怎么实现一个聊天室功能了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注创新互联行业资讯频道。
