android与springboot使用websocket进行交互，请将代码写出来

以下是一个 Android 客户端与 Spring Boot 服务器进行 WebSocket 交互的示例代码。

Android 客户端代码：

public class MainActivity extends AppCompatActivity {
    private WebSocketClient mWebSocketClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        connectWebSocket();
    }

    private void connectWebSocket() {
        URI uri;
        try {
            uri = new URI("ws://localhost:8080/websocket");
        } catch (URISyntaxException e) {
            e.printStackTrace();
            return;
        }

        mWebSocketClient = new WebSocketClient(uri) {
            @Override
            public void onOpen(ServerHandshake serverHandshake) {
                Log.i("WebSocket", "Opened");
                mWebSocketClient.send("Hello from Android!");
            }

            @Override
            public void onMessage(String s) {
                final String message = s;
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        TextView textView = (TextView)findViewById(R.id.messages);
                        textView.setText(textView.getText() + "\n" + message);
                    }
                });
            }

            @Override
            public void onClose(int i, String s, boolean b) {
                Log.i("WebSocket", "Closed " + s);
            }

            @Override
            public void onError(Exception e) {
                Log.i("WebSocket", "Error " + e.getMessage());
            }
        };
        mWebSocketClient.connect();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

        mWebSocketClient.close();
    }
}

Spring Boot 服务器端代码：

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(myHandler(), "/websocket").setAllowedOrigins("*");
    }

    @Bean
    public WebSocketHandler myHandler() {
        return new MyWebSocketHandler();
    }
}

public class MyWebSocketHandler extends TextWebSocketHandler {
    @Override
    public void handleTextMessage(WebSocketSession session, TextMessage message) throws IOException {
        String payload = message.getPayload();
        session.sendMessage(new TextMessage("Hello from Spring Boot!"));
    }
}

这个示例代码中，Android 客户端连接到 `ws://localhost:8080/websocket`，当连接成功后发送一条消息。Spring Boot 服务器端监听 `/websocket` 路径的 WebSocket 连接，并在接收到消息后返回一条消息给客户端。