Java Socket通信：客户端和服务器端实例

原创我不是女神ヾ 2024-10-22 03:15 229阅读 0赞

在Java中，Socket通信是建立客户端与服务器端双向通信的一种方式。下面我会提供一个简单的客户端和服务端实例。

1. 客户端（ServerThread.java）：

```java
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerThread implements Runnable {

private ServerSocket serverSocket;

public ServerThread(int port) {
        try {
            serverSocket = new ServerSocket(port);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

@Override
    public void run() {
        try (Socket clientSocket = serverSocket.accept()) {
            System.out.println("New client socket : " + clientSocket);

// 在这里可以实现读写等通信操作

String messageFromClient = "Message from Client";
            clientSocket.getOutputStream().write(messageFromClient.getBytes()));
            System.out.println("Sent message to client : " + messageFromClient);

clientSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

public static void main(String[] args) throws IOException {
        int port = 1234; // 请替换为实际使用的端口

ServerThread serverThread = new ServerThread(port);
        Thread thread = new Thread(serverThread);
        thread.start();

System.out.println("Server is running on port : " + port);
    }
}
```

2. 服务器端（Client.java）：

```java
import java.io.*;
import java.net.Socket;

public class Client {

public static void main(String[] args) throws IOException {
        String serverAddress = "localhost"; // 请替换为实际服务器地址
        int serverPort = 1234; // 请替换为实际使用的端口

Socket socket = new Socket(serverAddress, serverPort));
        System.out.println("Connected to Server on port : " + serverPort);

BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()))); 
        BufferedWriter out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())));

String clientMessage = "Hello from Client!";
        out.write(clientMessage.getBytes());
        System.out.println("Sent message to Server : " + clientMessage);

// 读取服务器响应
        String responseFromServer = in.readLine();
        System.out.println("Received response from Server: " + responseFromServer);

socket.close();
    }
}
```

以上代码实现了客户端向服务器发送消息，以及接收服务器的响应的功能。记得在实际使用时替换`localhost`和`1234`为你的服务器地址和端口号。