java 写一个简单tcp协议聊天程序
时间: 2023-05-19 13:04:29 浏览: 71
以下是一个简单的 Java TCP 协议聊天程序的代码示例:
```
import java.io.*;
import java.net.*;
public class SimpleChatServer {
public static void main(String[] args) {
try {
ServerSocket serverSocket = new ServerSocket(5000);
System.out.println("Server started on port 5000");
while (true) {
Socket clientSocket = serverSocket.accept();
System.out.println("Client connected: " + clientSocket.getInetAddress().getHostName());
BufferedReader reader = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
PrintWriter writer = new PrintWriter(clientSocket.getOutputStream(), true);
String message;
do {
message = reader.readLine();
System.out.println("Received message: " + message);
writer.println("Server received message: " + message);
} while (!message.equals("bye"));
clientSocket.close();
System.out.println("Client disconnected");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
```
这个程序创建了一个 ServerSocket 对象,监听端口 5000。当有客户端连接时,程序会创建一个 Socket 对象,并使用 BufferedReader 和 PrintWriter 对象来读取和写入数据。程序会一直等待客户端发送消息,直到收到 "bye" 消息为止。当客户端断开连接时,程序会关闭 Socket 对象。