如何在Spring Boot中组合REST和Websocket？

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(myWebSocketHandler(), "/websocket").setAllowedOrigins("*");
    }

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

public class MyWebSocketHandler implements WebSocketHandler {

    @Override
    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
        // 连接建立后的处理逻辑
    }

    @Override
    public void handleMessage(WebSocketSession session, WebSocketMessage<?> message) throws Exception {
        // 处理收到的消息
    }

    @Override
    public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
        // 处理传输错误
    }

    @Override
    public void afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus) throws Exception {
        // 连接关闭后的处理逻辑
    }

    @Override
    public boolean supportsPartialMessages() {
        return false;
    }
}

@RestController
public class MyRestController {

    @Autowired
    private SimpMessagingTemplate messagingTemplate;

    @GetMapping("/send-message")
    public void sendMessage() {
        messagingTemplate.convertAndSend("/websocket", "Hello, WebSocket!");
    }
}