Question

我正在尝试配置订阅映射，以在春季启动应用程序中通过websocket踩踏，但没有任何运气。我很确定我已经正确配置了stomp / websocket东西，因为我可以订阅由kafka消费者发布的主题，但是使用@SubscribeMapping根本不起作用。

这是我的控制人

@Controller
class TestController {
    @SubscribeMapping("/topic/test")
    fun testMapping(): String {
        return "THIS IS A TEST"
    }
}

这是我的配置

@Configuration
@EnableWebSocketMessageBroker
@Order(Ordered.HIGHEST_PRECEDENCE + 99)
class WebSocketConfig : AbstractWebSocketMessageBrokerConfigurer() {

    override fun configureMessageBroker(config: MessageBrokerRegistry) {
        config.setApplicationDestinationPrefixes("/app", "/topic")
        config.enableSimpleBroker("/queue", "/topic")
        config.setUserDestinationPrefix("/user")
    }

    override fun registerStompEndpoints(registry:StompEndpointRegistry) {
        registry.addEndpoint("/ws").setAllowedOrigins("*")
    }

    override fun configureClientInboundChannel(registration: ChannelRegistration?) {
        registration?.setInterceptors(object: ChannelInterceptorAdapter() {
            override fun preSend(message: Message<*>, channel: MessageChannel): Message<*> {
                val accessor: StompHeaderAccessor = MessageHeaderAccessor.getAccessor(message, StompHeaderAccessor::class.java)
                if (StompCommand.CONNECT.equals(accessor.command)) {
                    Optional.ofNullable(accessor.getNativeHeader("authorization")).ifPresent {
                        val token = it[0]
                        val keyReader = KeyReader()
                        val creds = Jwts.parser().setSigningKey(keyReader.key).parseClaimsJws(token).body
                        val groups = creds.get("groups", List::class.java)
                        val authorities = groups.map { SimpleGrantedAuthority(it as String) }
                        val authResult = UsernamePasswordAuthenticationToken(creds.subject, token, authorities)
                        SecurityContextHolder.getContext().authentication = authResult
                        accessor.user = authResult
                    }
                }
                return message
            }
        })
    }
}

然后在UI代码中，我使用stompjs包装器使用angular来订阅它，如下所示：

this.stompService.subscribe('/topic/test')
      .map(data => data.body)
      .subscribe(data => console.log(data));

像这样订阅我所知道的正在发射数据的主题可以很好地工作，但是subscribemapping没有作用。我还尝试过将事件侦听器添加到我的websocket配置中，以测试UI实际上是向后端发送订阅事件，如下所示：

    @EventListener
    fun handleSubscribeEvent(event: SessionSubscribeEvent) {
        println("Subscription event: $event")
    }

    @EventListener
    fun handleConnectEvent(event: SessionConnectEvent) {
        println("Connection event: $event")
    }

    @EventListener
    fun handleDisconnectEvent(event: SessionDisconnectEvent) {
        println("Disconnection event: $event")
    }

添加这些事件侦听器，我可以看到我期望从UI中获得的所有事件都在kotlin层中通过，但是我的控制器方法从未被调用。有什么明显的我想念的吗？

Answer 1

尝试以下操作：

@Controller
class TestController {

    @SubscribeMapping("/test")
    fun testMapping(): String {
        return "THIS IS A TEST"
    }
}

Websocket SubscribeMapping上的春季脚不起作用

1 个答案: