Java网络编程中socket连接断开问题案例

原创逃离我推掉我的手 2024-10-15 23:54 75阅读 0赞

在Java网络编程中，Socket的连接断开是一个常见的问题。以下是一个简单案例：

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

public class SocketConnectionExample {

public static void main(String[] args) {
        // 创建Socket对象
        try (Socket socket = new Socket("localhost", 1234)) {
            System.out.println("Socket connected successfully.");

// 发送数据
            try (OutputStream outputStream = socket.getOutputStream();
                     PrintWriter printWriter = new PrintWriter(outputStream, true))) {
                printWriter.println("Message sent to the server.");
                printWriter.flush();

// 接收数据
                try (InputStream inputStream = socket.getInputStream();
                         BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)))) {
                    String receivedData = "";
                    while ((receivedData = reader.readLine())) != null) {
                        System.out.println("Received data: " + receivedData);
                    }

if (!receivedData.equals("Message sent to the server."))) {
                        System.err.println("Received data does not match expected.");
                    }
                }
            } catch (IOException e) {
                System.err.println("Error occurred while establishing or using socket.");
                e.printStackTrace();
            }
        } catch (UnknownHostException uhe) {
            System.err.println("Failed to find the host.");
            uhe.printStackTrace();
        }
    }
}
```

在这个例子中，我们尝试连接到本地主机的1234端口。如果成功，我们将发送一条消息，并接收服务器返回的消息。

如果在连接、发送或接收数据过程中遇到任何问题（如网络中断、主机未找到等），程序将捕获异常并给出相应的错误信息。