Spring 反应式 ReactorNettyWebSocketClient 不记录任何内容 [英] Spring reactive ReactorNettyWebSocketClient not logging anything
问题描述
我创建了一个简单的演示应用程序来熟悉新的 WebSocketClient.我在以下位置找到了一个教程:https://stackify.com/reactive-spring-5/(反应式 WebSocket 客户端):
I've created a simple demo application to familiarize myself with the new WebSocketClient. I found a tutorial at: https://stackify.com/reactive-spring-5/ (Reactive WebSocket Clients):
@Bean
CommandLineRunner demo() {
return args -> {
Flux<String> input = Flux.<String>generate(sink -> sink.next("This is a test"))
.delayElements(Duration.ofSeconds(1));
WebSocketClient client = new ReactorNettyWebSocketClient();
client.execute(new URI("ws://echo.websocket.org"), session ->
session.send(input.map(session::textMessage))
.thenMany(session.receive().map(WebSocketMessage::getPayloadAsText).log())
.then())
.subscribe();
};
}
我的应用没有崩溃,但我没有看到任何日志记录,我做错了什么吗?我期望从 echo websocket 服务返回相同的值.
My app doesn't crash but I am seeing no logging at all, am I doing something wrong? I am expecting to get the same value returned from the echo websocket service.
如果我用以下内容替换输入变量,它确实有效:
If I replace the input variable with the following it does work:
Mono<String> input = Mono.just("This is a message");
有什么区别,我怎样才能使它与 String 的通量一起工作?
What is the difference and how can I make it work with a flux of String?
推荐答案
这对我有用:
package codependent;
import org.junit.Test;
import org.springframework.web.reactive.socket.WebSocketMessage;
import org.springframework.web.reactive.socket.client.ReactorNettyWebSocketClient;
import org.springframework.web.reactive.socket.client.WebSocketClient;
import reactor.core.publisher.EmitterProcessor;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.net.URI;
import java.net.URISyntaxException;
import java.time.Duration;
import java.util.concurrent.CountDownLatch;
public class SomeTest {
@Test
public void myTest() throws URISyntaxException, InterruptedException {
CountDownLatch latch = new CountDownLatch(20);
EmitterProcessor<Object> output = EmitterProcessor.create();
Flux<String> input = Flux.<String>generate(sink -> sink.next("This is a test"))
.delayElements(Duration.ofSeconds(1));
WebSocketClient client = new ReactorNettyWebSocketClient();
Mono<Void> sessionMono = client.execute(new URI("ws://echo.websocket.org"), session ->
session.send(input.map(session::textMessage))
.thenMany(session.receive()
.map(WebSocketMessage::getPayloadAsText).log()
.subscribeWith(output).then()).then());
output.doOnSubscribe(s -> sessionMono.subscribe())
.subscribe(i -> {
System.out.println("Received " + i);
latch.countDown();
});
latch.await();
}
}
日志:
18:14:10.205 [reactor-http-nio-4] DEBUG reactor.ipc.netty.http.client.HttpClient - [id: 0x5f974732, L:/192.168.2.193:60438 - R:echo.websocket.org/174.129.224.73:80] READ: 16B
+-------------------------------------------------+
| 0 1 2 3 4 5 6 7 8 9 a b c d e f |
+--------+-------------------------------------------------+----------------+
|00000000| 81 0e 54 68 69 73 20 69 73 20 61 20 74 65 73 74 |..This is a test|
+--------+-------------------------------------------------+----------------+
18:14:10.205 [reactor-http-nio-4] DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame opCode=1
18:14:10.205 [reactor-http-nio-4] DEBUG io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder - Decoding WebSocket Frame length=14
18:14:10.205 [reactor-http-nio-4] INFO reactor.Flux.Map.1 - onNext(This is a test)
Received This is a test
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