Question

我在 sendGet 方法中定义的参数遇到了问题，它从ftp服务器以xml文件的形式接收流。通过将类 SpringIntegrationTransformer 绑定到 Processor.class ，我正在使用 Spring云流。这是我的代码。

@EnableBinding(Processor.class)
    public class SpringIntegrationTransformer {
        private static Logger logger = LoggerFactory.getLogger(SpringIntegrationTransformer.class);
        @Autowired
        private PolicyListMapper policyListMapper;

        @StreamListener(Processor.INPUT)
        @SendTo(Processor.OUTPUT)
        public MessageSource<byte[]> sendGet(Message<byte[]> message) throws Exception {
            byte[] data=message.getPayload();
            logger.info("Got data = " + data);
            byte[] processedMessage=processData(data);
            return () -> MessageBuilder.withPayload(processedMessage).build();

        }


    private byte[] processData(byte[] data) {

        if (data.length == 0) {
            logger.info("Empty data");
            return new byte[0];
        }
        try {
            logger.info("Contrat.xml data : " + new String(data, "UTF-8"));
            return runEmployeeUnmarshaller(data);
        } catch (UnsupportedEncodingException e) {
            logger.error("Error processData" + e);
        }

        return new byte[0];

    }

     private byte[] runEmployeeUnmarshaller(byte[] data) {
        try {
            JAXBContext context = JAXBContext.newInstance(PolicyList.class);
            ByteArrayInputStream input = new ByteArrayInputStream(data);

            SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);

            ClassLoader classLoader = RxJavaTransformer.class.getClassLoader();
            InputStream xsdStream = classLoader.getResourceAsStream("policies.xsd");
            StreamSource xsdSource = new StreamSource(xsdStream);
            Schema schema = sf.newSchema(xsdSource);

            Unmarshaller unmarshaller = context.createUnmarshaller();

            unmarshaller.setSchema(schema);

            PolicyList policyList = (PolicyList) unmarshaller.unmarshal(input);
            logger.info("PolicyList data : " + policyList == null ? "not marshalled " : "marshalled");

            // TODO Add map struct to convert the object
            PolicyListDto policyListDto = policyListMapper.mapObjectToDto(policyList);
            byte[] policyListByte = SerializationUtils.serialize(policyListDto);
            return policyListByte;

        } catch (JAXBException | SAXException e) {
            logger.error("Error runEmployeeUnmarshaller" + e);
        }
        return new byte[0];

    }
}

sendGet方法负责从ftp服务器接收流，然后将其转换为 DTO 类 policyListDto ，然后通过 processData将其转换为byte [] strong>方法。

执行该类时，我注意到构建成功，但是当我在春季云中部署微服务并将xml文件放入ftp服务器时，出现以下错误：

> 2018-10-18 12:58:38.408 ERROR 1256 --- [ftp.FTPSTREAM-1] > o.s.integration.handler.LoggingHandler : > org.springframework.messaging.MessagingException: Exception thrown > while invoking > org.proactive.policy.collector.SpringIntegrationTransformer#sendGet[1 > args]; nested exception is java.lang.IllegalArgumentException: Could > not serialize object of type: class > org.proactive.policy.dto.PolicyListDto, failedMessage=GenericMessage > [payload=byte[2273], headers={amqp_receivedDeliveryMode=PERSISTENT, > amqp_receivedExchange=FTPSTREAM.ftp, amqp_deliveryTag=6, > file_name=contrat_valid_TEST_amine - Copie - Copie2.xml, > deliveryAttempt=3, amqp_consumerQueue=FTPSTREAM.ftp.FTPSTREAM, > amqp_redelivered=false, > file_originalFile=\tmp\rxjava\contrat_valid_TEST_amine - Copie - > Copie2.xml, file_relativePath=contrat_valid_TEST_amine - Copie - > Copie2.xml, amqp_receivedRoutingKey=FTPSTREAM.ftp, > id=cb05aca3-6202-0ac7-d027-e95b468909fe, > amqp_consumerTag=amq.ctag-GZZjbfJ-TFeQ8VYiDaCypw, > contentType=application/octet-stream, timestamp=1539863915387}] at > org.springframework.cloud.stream.binding.StreamListenerMessageHandler.handleRequestMessage(StreamListenerMessageHandler.java:63) > at > org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109) > at > org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:158) > at > org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) > at > org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:132) > at > org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:105) > at > org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:73) > at > org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:445) > at > org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:394) > at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:181) > at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:160) > at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47) > at > org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:108) > at > org.springframework.integration.endpoint.MessageProducerSupport.sendMessage(MessageProducerSupport.java:203) > at > org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter.access$1100(AmqpInboundChannelAdapter.java:60) > at > org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.lambda$onMessage$0(AmqpInboundChannelAdapter.java:214) > at > org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:287) > at > org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:180) > at > org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:211) > at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1414) > at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.actualInvokeListener(AbstractMessageListenerContainer.java:1337) > at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:1324) > at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:1303) > at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:817) > at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:801) > at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$700(SimpleMessageListenerContainer.java:77) > at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1042) > at java.lang.Thread.run(Thread.java:748) Caused by: > java.lang.IllegalArgumentException: Could not serialize object of > type: class org.proactive.policy.dto.PolicyListDto at > org.proactive.utils.SerializationUtils.serialize(SerializationUtils.java:34) > at > org.proactive.policy.collector.SpringIntegrationTransformer.runEmployeeUnmarshaller(SpringIntegrationTransformer.java:84) > at > org.proactive.policy.collector.SpringIntegrationTransformer.processData(SpringIntegrationTransformer.java:54) > at > org.proactive.policy.collector.SpringIntegrationTransformer.sendGet(SpringIntegrationTransformer.java:41) > at sun.reflect.GeneratedMethodAccessor93.invoke(Unknown Source) at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) at > org.springframework.messaging.handler.invocation.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:181) > at > org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:114) > at > org.springframework.cloud.stream.binding.StreamListenerMessageHandler.handleRequestMessage(StreamListenerMessageHandler.java:55) > ... 27 more Caused by: java.io.NotSerializableException: > org.proactive.policy.dto.PolicyListDto at > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184) > at > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348) > at > org.proactive.utils.SerializationUtils.serialize(SerializationUtils.java:32) > ... 36 more > > 2018-10-18 12:58:38.409 WARN 1256 --- [ftp.FTPSTREAM-1] > o.s.a.r.r.RejectAndDontRequeueRecoverer : Retries exhausted for > message (Body:'[B@7914e278(byte[2273])' MessageProperties > [headers={file_name=contrat_valid_TEST_amine - Copie - Copie2.xml, > file_originalFile=\tmp\rxjava\contrat_valid_TEST_amine - Copie - > Copie2.xml, contentType=application/octet-stream, > file_relativePath=contrat_valid_TEST_amine - Copie - Copie2.xml}, > contentType=application/octet-stream, contentLength=0, > receivedDeliveryMode=PERSISTENT, priority=0, redelivered=false, > receivedExchange=FTPSTREAM.ftp, receivedRoutingKey=FTPSTREAM.ftp, > deliveryTag=6, consumerTag=amq.ctag-GZZjbfJ-TFeQ8VYiDaCypw, > consumerQueue=FTPSTREAM.ftp.FTPSTREAM]) > > org.springframework.messaging.MessagingException: Exception thrown > while invoking > org.proactive.policy.collector.SpringIntegrationTransformer#sendGet[1 > args]; nested exception is java.lang.IllegalArgumentException: Could > not serialize object of type: class > org.proactive.policy.dto.PolicyListDto at > org.springframework.cloud.stream.binding.StreamListenerMessageHandler.handleRequestMessage(StreamListenerMessageHandler.java:63) > ~[spring-cloud-stream-2.0.1.RELEASE.jar!/:2.0.1.RELEASE] at > org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:109) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:158) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:132) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:105) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:73) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:445) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:394) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:181) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:160) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:108) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.integration.endpoint.MessageProducerSupport.sendMessage(MessageProducerSupport.java:203) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter.access$1100(AmqpInboundChannelAdapter.java:60) > ~[spring-integration-amqp-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.lambda$onMessage$0(AmqpInboundChannelAdapter.java:214) > [spring-integration-amqp-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:287) > [spring-retry-1.2.2.RELEASE.jar!/:na] at > org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:180) > [spring-retry-1.2.2.RELEASE.jar!/:na] at > org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:211) > [spring-integration-amqp-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1414) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.actualInvokeListener(AbstractMessageListenerContainer.java:1337) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:1324) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:1303) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:817) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:801) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$700(SimpleMessageListenerContainer.java:77) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1042) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_181] Caused by: > java.lang.IllegalArgumentException: Could not serialize object of > type: class org.proactive.policy.dto.PolicyListDto at > org.proactive.utils.SerializationUtils.serialize(SerializationUtils.java:34) > ~[proactive-utils-0.0.1-SNAPSHOT.jar!/:0.0.1-SNAPSHOT] at > org.proactive.policy.collector.SpringIntegrationTransformer.runEmployeeUnmarshaller(SpringIntegrationTransformer.java:84) > ~[classes!/:0.0.1-SNAPSHOT] at > org.proactive.policy.collector.SpringIntegrationTransformer.processData(SpringIntegrationTransformer.java:54) > ~[classes!/:0.0.1-SNAPSHOT] at > org.proactive.policy.collector.SpringIntegrationTransformer.sendGet(SpringIntegrationTransformer.java:41) > ~[classes!/:0.0.1-SNAPSHOT] at > sun.reflect.GeneratedMethodAccessor93.invoke(Unknown Source) ~[na:na] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > ~[na:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) > ~[na:1.8.0_181] at > org.springframework.messaging.handler.invocation.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:181) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:114) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.cloud.stream.binding.StreamListenerMessageHandler.handleRequestMessage(StreamListenerMessageHandler.java:55) > ~[spring-cloud-stream-2.0.1.RELEASE.jar!/:2.0.1.RELEASE] ... 27 > common frames omitted Caused by: java.io.NotSerializableException: > org.proactive.policy.dto.PolicyListDto at > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184) > ~[na:1.8.0_181] at > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348) > ~[na:1.8.0_181] at > org.proactive.utils.SerializationUtils.serialize(SerializationUtils.java:32) > ~[proactive-utils-0.0.1-SNAPSHOT.jar!/:0.0.1-SNAPSHOT] ... 36 common > frames omitted > > 2018-10-18 12:58:38.410 WARN 1256 --- [ftp.FTPSTREAM-1] > s.a.r.l.ConditionalRejectingErrorHandler : Execution of Rabbit message > listener failed. > > org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: > Listener threw exception at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.wrapToListenerExecutionFailedExceptionIfNeeded(AbstractMessageListenerContainer.java:1506) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1417) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.actualInvokeListener(AbstractMessageListenerContainer.java:1337) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:1324) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:1303) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:817) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:801) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$700(SimpleMessageListenerContainer.java:77) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1042) > [spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > java.lang.Thread.run(Thread.java:748) [na:1.8.0_181] Caused by: > org.springframework.messaging.MessageDeliveryException: failed to send > Message to channel 'FTPSTREAM.ftp.FTPSTREAM.errors'; nested exception > is > org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: > Retry Policy Exhausted at > org.springframework.integration.support.utils.IntegrationUtils.wrapInDeliveryExceptionIfNecessary(IntegrationUtils.java:163) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:475) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:394) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:181) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:160) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:108) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:98) > ~[spring-messaging-5.0.9.RELEASE.jar!/:5.0.9.RELEASE] at > org.springframework.integration.support.ErrorMessagePublisher.publish(ErrorMessagePublisher.java:164) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.handler.advice.ErrorMessageSendingRecoverer.recover(ErrorMessageSendingRecoverer.java:83) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.retry.support.RetryTemplate.handleRetryExhausted(RetryTemplate.java:512) > ~[spring-retry-1.2.2.RELEASE.jar!/:na] at > org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:351) > ~[spring-retry-1.2.2.RELEASE.jar!/:na] at > org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:180) > ~[spring-retry-1.2.2.RELEASE.jar!/:na] at > org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:211) > ~[spring-integration-amqp-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1414) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] ... 8 common > frames omitted Caused by: > org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: > Retry Policy Exhausted at > org.springframework.amqp.rabbit.retry.RejectAndDontRequeueRecoverer.recover(RejectAndDontRequeueRecoverer.java:45) > ~[spring-rabbit-2.0.6.RELEASE.jar!/:2.0.6.RELEASE] at > org.springframework.cloud.stream.binder.rabbit.RabbitMessageChannelBinder$3.handleMessage(RabbitMessageChannelBinder.java:513) > ~[spring-cloud-stream-binder-rabbit-2.0.1.RELEASE.jar!/:2.0.1.RELEASE] > at > org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:224) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:180) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:73) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] at > org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:445) > ~[spring-integration-core-5.0.8.RELEASE.jar!/:5.0.8.RELEASE] ... 21 > common frames omitted Caused by: > org.springframework.amqp.AmqpRejectAndDontRequeueException: > org.springframework.messaging.MessagingException: Exception thrown > while invoking > org.proactive.policy.collector.SpringIntegrationTransformer#sendGet[1 > args]; nested exception is java.lang.IllegalArgumentException: Could > not serialize object of type: class > org.proactive.policy.dto.PolicyListDto, failedMessage=GenericMessage > [payload=byte[2273], headers={amqp_receivedDeliveryMode=PERSISTENT, > amqp_receivedExchange=FTPSTREAM.ftp, amqp_deliveryTag=6, > file_name=contrat_valid_TEST_amine - Copie - Copie2.xml, > deliveryAttempt=3, amqp_consumerQueue=FTPSTREAM.ftp.FTPSTREAM, > amqp_redelivered=false, > file_originalFile=\tmp\rxjava\contrat_valid_TEST_amine - Copie - > Copie2.xml, file_relativePath=contrat_valid_TEST_amine - Copie - > Copie2.xml, amqp_receivedRoutingKey=FTPSTREAM.ftp, > id=cb05aca3-6202-0ac7-d027-e95b468909fe, > amqp_consumerTag=amq.ctag-GZZjbfJ-TFeQ8VYiDaCypw, > contentType=application/octet-stream, timestamp=1539863915387}] ... > 27 common frames omitted Caused by: > org.springframework.messaging.MessagingException: Exception thrown > while invoking > org.proactive.policy.collector.SpringIntegrationTransformer#sendGet[1 > args]; nested exception is java.lang.IllegalArgumentException: Could > not serialize object of type: class > org.proactive.policy.dto.PolicyListDto at > org.springframework.cloud.stream.binding.StreamListenerMessageHandler.handleRequestMessage(StreamListenerMessageHandler.java:63)

因此，我假设错误来自 sendGet 的参数，我将 byte [] 类型修改为 Message ，如下所示上面的代码，但没有成功。

感谢您的帮助。感谢您解决我的问题。

Answer 1

看起来像您的代码中的问题...

> java.lang.IllegalArgumentException: Could not serialize object of
> type: class org.proactive.policy.dto.PolicyListDto    at
> org.proactive.utils.SerializationUtils.serialize(SerializationUtils.java:34)
>...
> Caused by: java.io.NotSerializableException:
> org.proactive.policy.dto.PolicyListDto    at

将来；发布堆栈跟踪而不进行修改；格式错误时很难读取（使用Command-K只需缩进4个字节）。

org.springframework.messaging.MessagingException：java.lang.IllegalArgumentException中的嵌套异常

1 个答案: