RabbitMq报错 Execution of Rabbit message listener failed

1.注意点，发送的消息实体要实现 Serializable 接口

2.在rabbitmq可视化界面中，如果队列queue绑定了exchange，不要直接在queue里粘贴消息，要在绑定的exchange下，通过routting key (路由到要发送的queue) 粘贴发送消息。

很不幸，我在这里栽到了...

简单的记录下，留着回忆。

// 代码角度 封装的消息实体类要实现Serializable 接口public class EquNameplateSynDTO implements Serializable {// 省略getter、setterprivate String equId;private String commonEquId;private String picUrl;}

单元测试封装的消息如下

{"obj":{"commonEquId":"328","picUrl":"https://hais-prod.oss-cn-shenzhen.aliyuncs.com/hospital/HS000665/equ/5d9063fa-f17d-40a2-8ab9-076089bfd7eb/711187157686676231.jpg"},"msgId":"328","action":"ADD","type":"COMMON_EQU_NAMEPLATE_PIC"}

贴到rabbit 客户端中，程序开始疯狂报错 " Execution of Rabbit message listener failed "，无奈只能删除queue，再次像下图中粘贴消息，还是会报同样的错误。

操作如下直接在Queue中粘贴了消息

Caused by: org.springframework.messaging.MessageDeliveryException: No channel resolved by router 'router' and no 'defaultOutputChannel' defined.at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:198)at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:162)at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:115)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:453)at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:401)at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:187)at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:166)at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47)at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:109)at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:431)at org.springframework.integration.handler.AbstractMessageProducingHandler.doProduceOutput(AbstractMessageProducingHandler.java:284)at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:265)at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:223)at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:129)at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:162)at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:115)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:453)at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:401)at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:187)at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:166)at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:47)at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:109)at org.springframework.integration.endpoint.MessageProducerSupport.sendMessage(MessageProducerSupport.java:205)at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter.access$600(AmqpInboundChannelAdapter.java:57)at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.createAndSend(AmqpInboundChannelAdapter.java:238)at org.springframework.integration.amqp.inbound.AmqpInboundChannelAdapter$Listener.onMessage(AmqpInboundChannelAdapter.java:204)at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1552)... 10 common frames omitted
2020-12-24 11:56:58 [container-4] WARN  o.s.a.r.listener.ConditionalRejectingErrorHandler - Execution of Rabbit message listener failed.
org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: Listener threw exception

解决：找到并在绑定的exchange中通过rotuing key 粘贴发送消息，（Properties中添加 content_type text/plain ，试了不加也可以。）

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