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我正在使用 spring-cloud-starter-stream-kafka 使用 spring 云流。我已将我的频道绑定到 kafka 主题，如下所示application.properties：

spring.cloud.stream.bindings.gatewayOutput.destination=received
spring.cloud.stream.bindings.enrichingInput.destination=received
spring.cloud.stream.bindings.enrichingOutput.destination=enriched
spring.cloud.stream.bindings.redeemingInput.destination=enriched
spring.cloud.stream.bindings.redeemingOutput.destination=redeemed
spring.cloud.stream.bindings.fulfillingInput.destination=redeemed
spring.cloud.stream.bindings.error.destination=errors12
spring.cloud.stream.bindings.errorInput.destination=errors12
spring.cloud.stream.bindings.errorOutput.destination=errors12

我无法让我的程序向错误通道生成异常消息。令人惊讶的是，即使我在不​​同的线程中，它似乎也没有尝试生成它（我有一个@MessagingGateway将消息转储到gatewayOutput中，然后其余的流程异步发生）。这是我的定义ServiceActivator：

@Named
@Configuration
@EnableBinding(Channels.class)
@EnableIntegration
public class FulfillingServiceImpl extends AbstractBaseService implements
        FulfillingService {

    @Override
    @Audit(value = "annotatedEvent")
    @ServiceActivator(inputChannel = Channels.FULFILLING_INPUT, requiresReply = "false")
    public void fulfill(TrivialRedemption redemption) throws Exception {

        logger.error("FULFILLED!!!!!!");

        throw new Exception("test exception");

    }
}

这是生成的日志（我已经截断了完整的异常）。没有...

  • 投诉 errorChannel 没有任何订阅者
  • Kafka生产者线程日志记录
2016-05-13 12:13:14 pool-6-thread-1 DEBUG KafkaMessageChannelBinder$ReceivingHandler:115 - org.springframework.cloud.stream.binder.kafka.KafkaMessageChannelBinder$ReceivingHandler@2b461688 收到消息：GenericMessage [payload=byte[ 400]，标头={kafka_offset=17，kafka_messageKey=null，kafka_topic=已赎回，kafka_partitionId=0，kafka_nextOffset=18}] - {}
2016-05-13 12:13:14 pool-6-thread-1 DEBUG DirectChannel:430 - preSend on channel 'fulfillingInput', message: GenericMessage [payload=com.test.system.poc.model.v3.TrivialRedemption@2581ed90 [endpoints=[com.test.system.poc.model.v3.Breadcrumb@21be7df8],orderId=f72b2d9b-4e60-43fa-95d4-1b0b368fe49f,systemCategory=DEMO,systemSubCategory=,properties=,monetaryRedemptionAmount=456.78], headers= {kafka_offset=17, kafka_messageKey=null, kafka_topic=redeemed, kafka_partitionId=0, kafka_nextOffset=18, contentType=application/x-java-object;type=com.test.system.poc.model.v3.TrivialRedemption}] - { }
2016-05-13 12:13:14 pool-6-thread-1 DEBUG ServiceActivatingHandler:115 - ServiceActivator for [org.springframework.integration.handler.MethodInvokingMessageProcessor@64bce7ab] (fulfillingServiceImpl.fulfill.serviceActivator.handler) 收到消息：GenericMessage [payload=com.test.system.poc.model.v3.TrivialRedemption@2581ed90[endpoints=[com.test.system.poc.model.v3.Breadcrumb@21be7df8],orderId=f72b2d9b-4e60-43fa-95d4-1b0b368fe49f ,systemCategory=DEMO,systemSubCategory=,properties=,monetaryRedemptionAmount=456.78], headers={kafka_offset=17, kafka_messageKey=null, kafka_topic=redeemed, kafka_partitionId=0, kafka_nextOffset=18, contentType=application/x-java-object;type =com.test.system.poc.model.v3.TrivialRedemption}] - {}
2016-05-13 12:13:14 pool-6-thread-1 DEBUG DefaultListableBeanFactory:251 - 返回单例 bean 'integrationEvaluationContext' 的缓存实例 - {}
2016-05-13 12:13:14 pool-6-thread-1 DEBUG DefaultListableBeanFactory:251 - 返回单例 bean 'integrationConversionService' 的缓存实例 - {}
2016-05-13 12:13:14 pool-6-thread-1 ERROR FulfillingServiceImpl$$EnhancerBySpringCGLIB$$$9dad62:42 - 已完成！！！！！！- {}
2016-05-13 12:13:14 pool-6-thread-1 ERROR LoggingErrorHandler:35 - 处理时出错：KafkaMessage [Message(magic = 0, attributes = 0, crc = 3373691507, key = null, payload = java. nio.HeapByteBuffer[pos=0 lim=400 cap=400]), KafkaMessageMetadata [offset=17, nextOffset=18, Partition[topic='redeemed', id=0]] - {}
...
...
2016-05-13 12:13:14 kafka-fetch-1 TRACE BoundedByteBufferReceive:36 - 读取 40 个字节。- {}
2016-05-13 12:13:14 kafka-fetch-1 TRACE DefaultConnection:126 - 从分区读取 [topic='enriched', id=0]@18 - {}
2016-05-13 12:13:14 kafka-fetch-1 TRACE BoundedByteBufferSend:36 - 写入了 60 个字节。- {}
2016-05-13 12:13:14 kafka-fetch-1 TRACE BoundedByteBufferReceive:36 - 读取 40 个字节。- {}
2016-05-13 12:13:14 kafka-fetch-1 TRACE DefaultConnection:126 - 从分区读取 [topic='redeemed', id=0]@18 - {}
2016-05-13 12:13:14 kafka-fetch-1 TRACE BoundedByteBufferSend:36 - 写入了 60 个字节。- {}
2016-05-13 12:13:15 kafka-fetch-1 TRACE BoundedByteBufferReceive:36 - 读取 40 个字节。- {}
2016-05-13 12:13:15 kafka-fetch-1 TRACE DefaultConnection:126 - 从分区读取 [topic='errors12', id=0]@0 - {}
2016-05-13 12:13:15 kafka-fetch-1 TRACE BoundedByteBufferSend:36 - 写入了 60 个字节。- {}
2016-05-13 12:13:15 kafka-fetch-1 TRACE BoundedByteBufferReceive:36 - 读取 40 个字节。- {}
2016-05-13 12:13:15 kafka-fetch-1 TRACE BoundedByteBufferSend:36 - 写入了 60 个字节。- {}

编辑：这是我的频道课程的内容：

public interface Channels {

    public static final String GATEWAY_OUTPUT = "gatewayOutput";

    public static final String ENRICHING_INPUT = "enrichingInput";
    public static final String ENRICHING_OUTPUT = "enrichingOutput";

    public static final String REDEEMING_INPUT = "redeemingInput";
    public static final String REDEEMING_OUTPUT = "redeemingOutput";

    public static final String FULFILLING_INPUT = "fulfillingInput";
    public static final String FULFILLING_OUTPUT = "fulfillingOutput";

    @Output(GATEWAY_OUTPUT)
    MessageChannel gatewayOutput();

    @Input(ENRICHING_INPUT)
    MessageChannel enrichingInput();

    @Output(ENRICHING_OUTPUT)
    MessageChannel enrichingOutput();

    @Input(REDEEMING_INPUT)
    MessageChannel redeemingInput();

    @Output(REDEEMING_OUTPUT)
    MessageChannel redeemingOutput();

    @Input(FULFILLING_INPUT)
    MessageChannel fulfillingInput();

    @Output(FULFILLING_OUTPUT)
    MessageChannel fulfillingOutput();
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1 回答 1

1

你没有展示你的Channels班级，但活页夹不知道你的“错误”频道是“特殊的”。

绑定器可以配置重试并将异常路由到死信主题；请参阅1.0.0.RELEASE 中的此 PR 。

或者，您可以在服务激活器之前添加一个“中间流”网关 - 将其视为 Java 中的“try/catch”块：

@MessageEndpoint
public static class GatewayInvoker {

    @Autowired
    private ErrorHandlingGateway gw;

    @ServiceActivator(inputChannel = Channels.FULFILLING_INPUT)
    public void send(Message<?> message) {
        this.gw.send(message);
    }

}

@Bean
public GatewayInvoker gate() {
    return new GatewayInvoker();
}

@MessagingGateway(defaultRequestChannel = "toService", errorChannel = Channels.ERRORS)
public interface ErrorHandlingGateway {

    void send(Message<?> message);

}

将您的服务激活器的输入通道更改为toService.

您必须添加@IntegrationComponentScan到您的配置类，以便框架可以检测@MessagingGateway接口并为其构建代理。

编辑

刚刚向我建议的另一种选择是ExpressionEvaluatingAdvice在您的服务激活器的建议链中添加一个。

于 2016-05-13T18:00:41.480 回答