问题描述
我正在尝试从 kafka 获取消息并使用 Spring 将其发送到 RSocket。在 Spring Java 和客户端使用 React 发布服务器端
@Configuration
@EnableConfigurationProperties(RsocketConsumerProperties.class)
public class RsocketConsumerConfiguration {
@Bean
public Function<Integer,Mono<Integer>> rsocketConsumer(RSocketRequester.Builder builder,RsocketConsumerProperties rsocketConsumerProperties) {
RSocketRequester rSocketRequester = builder.websocket(URI.create("ws://localhost:7000/"));
return input -> rSocketRequester.route(rsocketConsumerProperties.getRoute()).data(input).retrieveMono(Integer.class);
}
}
@EnableBinding(Sink.class)
public class Listener {
@Autowired
private Function<Integer,Mono<Integer>> rsocketConsumer;
@StreamListener(Sink.INPUT)
public void fireAndForget(Integer val) {
System.out.println(val);
rsocketConsumer.apply(val).subscribe();
}
}
@Controller
public class ServerController {
@MessageMapping("data")
public Mono<Integer> hello(Integer integer) {
return Mono.just(integer);
}
}
我在服务器端做错了什么，因为我的客户端已连接但无法获取新消息
client.connect().subscribe({
onComplete: socket => {
socket.fireAndForget({
data: { message: "hello from javascript!" },Metadata: null
});
},onError: error => {
console.log("got error");
console.error(error);
},onSubscribe: cancel => {
/* call cancel() to abort */
console.log("subscribe!");
console.log(cancel);
// cancel.cancel();
}
});
解决方法
你这样做requester.route("input").data("Welcome to Rsocket").send();我们有这个：
/**
* Perform a {@link RSocket#fireAndForget fireAndForget} sending the
* provided data and metadata.
* @return a completion that indicates if the payload was sent
* successfully or not. Note,however that is a one-way send and there
* is no indication of whether or how the event was handled on the
* remote end.
*/
Mono<Void> send();
你看到 - Mono？这意味着它必须被订阅以启动响应式流处理。有关详细信息，请参阅 Reactor 项目：https://projectreactor.io/
另一方面，在你的情况下，不清楚什么是服务器，什么是客户端...... 你这样做：
/**
* Build an {@link RSocketRequester} with an
* {@link io.rsocket.core.RSocketClient} that connects over WebSocket to
* the given URL. The requester can be used to make requests
* concurrently. Requests are made over a shared connection that is also
* re-established as needed when further requests are made.
* @param uri the URL to connect to
* @return the created {@code RSocketRequester}
* @since 5.3
*/
RSocketRequester websocket(URI uri);
而且我会说这意味着您展示的代码中的 client。服务器位于为 7000 协议打开 ws:// 端口的另一端。因此，请确保您正确理解和配置所有部件。例如，我不明白为什么您的 @RestController 类中需要 Listener...