java实现聊天室带界面
时间: 2023-09-12 15:13:00 浏览: 44
要实现带界面的聊天室,可以使用 JavaFX 或 Swing 这两个 GUI 框架。以下是一个简单的聊天室的实现思路:
1. 创建一个服务器程序,监听客户端的连接请求。
2. 创建一个客户端程序,连接到服务器,并发送和接收消息。
3. 服务器将收到的每个消息转发给所有连接的客户端。
4. 客户端将收到的消息显示在聊天界面上,并能够发送自己的消息。
下面是一个使用 JavaFX 实现的聊天室的示例代码:
Server.java:
```java
import java.io.*;
import java.net.*;
import java.util.*;
public class Server {
private ServerSocket serverSocket;
private List<Socket> clients = new ArrayList<>();
public void start(int port) throws IOException {
serverSocket = new ServerSocket(port);
System.out.println("Server started on port " + port);
while (true) {
Socket clientSocket = serverSocket.accept();
System.out.println("Client connected: " + clientSocket.getInetAddress());
clients.add(clientSocket);
new Thread(() -> handleClient(clientSocket)).start();
}
}
private void handleClient(Socket clientSocket) {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
while (true) {
String message = in.readLine();
if (message == null) break;
System.out.println("Received message: " + message);
for (Socket other : clients) {
if (other != clientSocket) {
PrintWriter out = new PrintWriter(other.getOutputStream(), true);
out.println(message);
}
}
}
System.out.println("Client disconnected: " + clientSocket.getInetAddress());
clients.remove(clientSocket);
clientSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public void stop() throws IOException {
serverSocket.close();
}
public static void main(String[] args) throws IOException {
Server server = new Server();
server.start(8000);
}
}
```
Client.java:
```java
import javafx.application.Application;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import java.io.*;
import java.net.*;
public class Client extends Application {
private Socket socket;
private BufferedReader in;
private PrintWriter out;
private TextArea chatArea;
private TextField messageField;
@Override
public void start(Stage primaryStage) throws Exception {
BorderPane root = new BorderPane();
root.setPadding(new Insets(10));
chatArea = new TextArea();
chatArea.setEditable(false);
root.setCenter(chatArea);
messageField = new TextField();
messageField.setOnAction(e -> sendMessage());
root.setBottom(messageField);
Button sendButton = new Button("Send");
sendButton.setOnAction(e -> sendMessage());
VBox vbox = new VBox(sendButton);
vbox.setSpacing(10);
vbox.setPadding(new Insets(10));
root.setRight(vbox);
primaryStage.setScene(new Scene(root, 400, 300));
primaryStage.setTitle("Chat Room");
primaryStage.show();
connect();
}
private void connect() {
new Thread(() -> {
try {
socket = new Socket("localhost", 8000);
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(), true);
while (true) {
String message = in.readLine();
if (message == null) break;
Platform.runLater(() -> chatArea.appendText(message + "\n"));
}
disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}).start();
}
private void disconnect() {
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private void sendMessage() {
String message = messageField.getText();
if (!message.isEmpty()) {
out.println(message);
messageField.clear();
}
}
public static void main(String[] args) {
launch(args);
}
}
```
这个聊天室的界面比较简单,只有一个文本框用于显示聊天记录,一个文本框用于输入消息,和一个发送按钮。当用户在输入框中按下回车键或点击发送按钮时,客户端会将消息发送给服务器,服务器会将消息转发给所有连接的客户端,并在聊天窗口中显示。