我有一个非常简单的Spring WebSocket应用程序。但是，我正在尝试使用路径变量进行订阅以及消息映射。

我在下面发布了一个释义的示例。我希望@SendTo注解会根据订阅者的身份返回给订阅者fleetId。即，POSTto /fleet/MyFleet/driver/MyDriver应通知的订阅者/fleet/MyFleet，但我没有看到此行为。

值得注意的是，订阅文字/fleet/{fleetId}作品。这是故意的吗？我是否缺少某些配置？还是这不是它的工作方式？

我对WebSockets或这个Spring项目还不太熟悉，所以在此先感谢。

Controller.java

...
@MessageMapping("/fleet/{fleetId}/driver/{driverId}")
@SendTo("/topic/fleet/{fleetId}")
public Simple simple(@DestinationVariable String fleetId, @DestinationVariable String driverId) {
    return new Simple(fleetId, driverId);
}
...

WebSocketConfig.java

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableSimpleBroker("/topic");
        config.setApplicationDestinationPrefixes("/live");
    }

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/fleet").withSockJS();
    }
}

index.html

var socket = new SockJS('/fleet');
var stompClient = Stomp.over(socket);
stompClient.connect({}, function(frame) {
    // Doesn't Work
    stompClient.subscribe('/topic/fleet/MyFleet', function(greeting) {
    // Works
    stompClient.subscribe('/topic/fleet/{fleetId}', function(greeting) {
        // Do some stuff
    });
});

发送样品

    stompClient.send("/live/fleet/MyFleet/driver/MyDriver", {}, JSON.stringify({
        // Some simple content
    }));