我的'普通'代码中出现此错误，并且可以在一个简单的junit测试中重现它。
使用.route(...)..subFlowMapping(...)引发此错误
如果我评论.route(..)代码，那么测试运行成功。
可以请某人解释为什么Spring Integration会尝试找到'true'频道而不是路由到真正的子流？
@Test
public void testDynaSubFlowCreation() {
Flux<Message<?>> messageFlux = Flux.just("1,2,3,4").map(v -> v.split(",")).flatMapIterable(Arrays::asList)
.map(Integer::parseInt).map(GenericMessage<Integer>::new);
QueueChannel resultChannel = new QueueChannel();
IntegrationFlow integrationFlow = IntegrationFlows
.from(messageFlux)
.<Integer, Boolean>route(p->p % 2 == 0, m->m
.subFlowMapping(true, sf-> sf.<Integer, String>transform(em->{return "even:"+em;}).log())
.subFlowMapping(false, sf-> sf.<Integer, String>transform(em->{return "odd:"+em;}).log())
.defaultOutputToParentFlow()
)
.log(l -> "!!!!!!!!!!!!!!!!!!!!!!! end int="+l)
.channel(resultChannel)
.get();
this.flowContext.registration(integrationFlow).register();
int queueSize = resultChannel.getQueueSize();
assertThat(queueSize).as("queueSize").isEqualTo(4);
}
2018-02-21 17:33:27,541 [main] DEBUG reactor.util.Loggers$LoggerFactory - Using Slf4j logging framework
2018-02-21 17:33:28,184 [main] DEBUG o.s.i.handler.LoggingHandler - _org.springframework.integration.errorLogger.handler received message: ErrorMessage [payload=org.springframework.messaging.MessagingException: failed to resolve channel name 'false'; nested exception is org.springframework.messaging.core.DestinationResolutionException: failed to look up MessageChannel with name 'false' in the BeanFactory.; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'false' available, failedMessage=GenericMessage [payload=1, headers={id=684db1df-ee6e-f35e-8332-168cee2a1681, timestamp=1519230808175}], headers={id=621649c0-b8a0-4573-9220-c38891544043, timestamp=1519230808181}]
2018-02-21 17:33:28,188 [main] ERROR o.s.i.handler.LoggingHandler - org.springframework.messaging.MessagingException: failed to resolve channel name 'false'; nested exception is org.springframework.messaging.core.DestinationResolutionException: failed to look up MessageChannel with name 'false' in the BeanFactory.; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'false' available, failedMessage=GenericMessage [payload=1, headers={id=684db1df-ee6e-f35e-8332-168cee2a1681, timestamp=1519230808175}]
at org.springframework.integration.router.AbstractMappingMessageRouter.resolveChannelForName(AbstractMappingMessageRouter.java:227)
at org.springframework.integration.router.AbstractMappingMessageRouter.addChannelFromString(AbstractMappingMessageRouter.java:258)
at org.springframework.integration.router.AbstractMappingMessageRouter.addToCollection(AbstractMappingMessageRouter.java:296)
at org.springframework.integration.router.AbstractMappingMessageRouter.determineTargetChannels(AbstractMappingMessageRouter.java:186)
at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:171)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:141)
at org.springframework.integration.handler.AbstractMessageHandler.onNext(AbstractMessageHandler.java:165)
at org.springframework.integration.handler.AbstractMessageHandler.onNext(AbstractMessageHandler.java:51)
at org.springframework.integration.endpoint.ReactiveStreamsConsumer$1.hookOnNext(ReactiveStreamsConsumer.java:138)
at org.springframework.integration.endpoint.ReactiveStreamsConsumer$1.hookOnNext(ReactiveStreamsConsumer.java:127)
at reactor.core.publisher.BaseSubscriber.onNext(BaseSubscriber.java:158)
at reactor.core.publisher.FluxRetry$RetrySubscriber.onNext(FluxRetry.java:79)
at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:185)
at reactor.core.publisher.FluxPublish$PublishSubscriber.drain(FluxPublish.java:457)
at reactor.core.publisher.FluxPublish$PublishSubscriber.onNext(FluxPublish.java:263)
at reactor.core.publisher.FluxCreate$IgnoreSink.next(FluxCreate.java:571)
at reactor.core.publisher.FluxCreate$SerializedSink.next(FluxCreate.java:146)
at org.springframework.integration.channel.FluxMessageChannel.doSend(FluxMessageChannel.java:65)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:438)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:388)
at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.poll(FluxPeekFuseable.java:310)
at reactor.core.publisher.FluxPublish$PublishSubscriber.drain(FluxPublish.java:411)
at reactor.core.publisher.FluxPublish$PublishSubscriber.onSubscribe(FluxPublish.java:224)
at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onSubscribe(FluxPeekFuseable.java:172)
at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onSubscribe(FluxPeekFuseable.java:172)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.onSubscribe(FluxFlattenIterable.java:206)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onSubscribe(FluxMapFuseable.java:90)
at reactor.core.publisher.FluxJust.subscribe(FluxJust.java:68)
at reactor.core.publisher.FluxMapFuseable.subscribe(FluxMapFuseable.java:63)
at reactor.core.publisher.FluxFlattenIterable.subscribe(FluxFlattenIterable.java:107)
at reactor.core.publisher.FluxMapFuseable.subscribe(FluxMapFuseable.java:63)
at reactor.core.publisher.FluxMapFuseable.subscribe(FluxMapFuseable.java:63)
at reactor.core.publisher.FluxPeekFuseable.subscribe(FluxPeekFuseable.java:86)
at reactor.core.publisher.FluxPeekFuseable.subscribe(FluxPeekFuseable.java:86)
at reactor.core.publisher.FluxPublish.connect(FluxPublish.java:99)
at reactor.core.publisher.ConnectableFlux.connect(ConnectableFlux.java:99)
at java.util.concurrent.ConcurrentHashMap$ValuesView.forEach(ConcurrentHashMap.java:4707)
at org.springframework.integration.channel.FluxMessageChannel.subscribe(FluxMessageChannel.java:77)
at org.springframework.integration.endpoint.ReactiveStreamsConsumer.doStart(ReactiveStreamsConsumer.java:127)
at org.springframework.integration.endpoint.AbstractEndpoint.start(AbstractEndpoint.java:162)
at org.springframework.integration.config.ConsumerEndpointFactoryBean.start(ConsumerEndpointFactoryBean.java:349)
at org.springframework.integration.dsl.StandardIntegrationFlow.start(StandardIntegrationFlow.java:102)
at org.springframework.integration.dsl.context.IntegrationFlowRegistration.start(IntegrationFlowRegistration.java:136)
at org.springframework.integration.dsl.context.IntegrationFlowContext.register(IntegrationFlowContext.java:108)
at org.springframework.integration.dsl.context.IntegrationFlowContext.access$500(IntegrationFlowContext.java:66)
at org.springframework.integration.dsl.context.IntegrationFlowContext$IntegrationFlowRegistrationBuilder.register(IntegrationFlowContext.java:238)
at com.lr.m3integration.DynaFlowTests.testDynaSubFlowCreation(DynaFlowTests.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)
Caused by: org.springframework.messaging.core.DestinationResolutionException: failed to look up MessageChannel with name 'false' in the BeanFactory.; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'false' available
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:117)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:46)
at org.springframework.integration.router.AbstractMappingMessageRouter.resolveChannelForName(AbstractMappingMessageRouter.java:223)
... 80 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'false' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:687)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1205)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:205)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:89)
... 82 more
@阿尔乔姆-比兰：
我不完全确定动态注册是问题的根源。
我静态配置了相同的流程，如下所示：
@EnableIntegration
@Configuration
public class IntegrationTestConfig {
@Bean
public QueueChannel resultChannel() {
return new QueueChannel();
}
@Bean
public Flux<Message<?>> messageFlux(){
return Flux.just("1,2,3,4").map(v -> v.split(",")).flatMapIterable(Arrays::asList)
.map(Integer::parseInt).map(GenericMessage<Integer>::new);
}
@Bean
public MessageChannel inputChannel() {
return MessageChannels.direct().get();
}
@Bean
public IntegrationFlow withSubFlows() {
return IntegrationFlows
// .from(inputChannel())
.from(messageFlux())
.<Integer, Boolean>route(p->p % 2 == 0, m->m
.subFlowMapping(true, sf-> sf.<Integer, String>transform(em->{return "even:"+em;}).log().bridge())
.subFlowMapping(false, sf-> sf.<Integer, String>transform(em->{return "odd:"+em;}).log().bridge())
.defaultOutputToParentFlow()
)
.log(l -> "!!!!!!!!!!!!!!!!!!!!!!! end int="+l)
.channel(resultChannel())
.get();
}
}
@RunWith(SpringRunner.class)
@SpringIntegrationTest
@SpringBootTest
@Autowired
public QueueChannel resultChannel;
@Autowired
public MessageChannel inputChannel;
@Test
public void testSubFlowCreation() {
// fill input channel
IntStream.range(0,4).forEach(i-> inputChannel.send(MessageBuilder.withPayload(i).build()));
// receive results after flow processing
assertThat(resultChannel.getReceiveCount()).as("receiveCount").isEqualTo(0);
assertThat(resultChannel.receive(1000)).as("message").isNotNull();
assertThat(resultChannel.getQueueSize()).as("queueSize").isEqualTo(3);
}
}
通过使用input = messageFlux（）执行，您将得到相同的错误。 通过输入= inputChannel（）执行junit测试运行绿色。
答案 0 :(得分：1)
确认。这是RouterSpec中的错误。我们暂时不能将subFlowMapping()用于动态注册的流。仅仅因为那里的逻辑基于ContextRefreshedEvent，它只在应用程序上下文启动时发生一次：https://jira.spring.io/browse/INT-4411