Spring boot websocket发送jsonstring

<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 extends TextWebSocketHandler {

    @Override
    public void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
        String payload = message.getPayload();
        // 处理接收到的JSON字符串
        // ...
    }
}

@Autowired
private WebSocketHandler myWebSocketHandler;

public void sendJsonString(String jsonString) {
    // 构造TextMessage对象
    TextMessage message = new TextMessage(jsonString);
    // 发送消息
    myWebSocketHandler.handleTextMessage(session, message);
}