如何在Java中使用Socket编程实现客户端与服务器的交互？

原创忘是亡心i 2025-03-09 19:51 2阅读 0赞

在Java中，我们可以使用Socket类来创建客户端和服务器之间的连接。以下是一个简单的例子，展示如何从客户端向服务器发送消息：

1. 客户端代码：

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

public class Client {
    public static void main(String[] args) {
        try (Socket socket = new Socket("localhost", 1234)); // replace with your server IP and port

BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()))));
            PrintWriter out = new PrintWriter(socket.getOutputStream(), true));

String message = "Hello, Server!";
            out.println(message); // send the message to the server

String response = in.readLine(); // read the response from the server
            System.out.println("Server Response: " + response);

} catch (IOException e) {
            e.printStackTrace();
        }
    }
}
```

2. 服务器端代码（省略，因为上述客户端代码已经包含了基本的交互逻辑）：

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

public class Server {
    public static void main(String[] args) throws IOException {
        ServerSocket server = new ServerSocket(1234); // replace with your port number

while (true) { // start accepting connections
            Socket client = server.accept(); // wait for a connection

BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()))));
            PrintWriter out = new PrintWriter(client.getOutputStream(), true));

String message = in.readLine(); // read the message from the client
            out.println("Received: " + message); // send a response to the client

client.close(); // close the connection with the client
        }
    }
}
```

这个示例展示了如何在Java中使用Socket编程创建客户端与服务器的交互。请根据实际情况替换IP地址和端口号。