Following this, I have this code
@Bean
open fun messageConverter(om: ObjectMapper): MessageConverter {
return Jackson2JsonMessageConverter(om)
}
@Bean
open fun rabbitListenerContainerFactory(cf: ConnectionFactory, mc: MessageConverter ): SimpleRabbitListenerContainerFactory {
val factory = SimpleRabbitListenerContainerFactory()
factory.setConnectionFactory(cf)
factory.setMessageConverter(mc)
return factory
}
@Bean
open fun builder(): Jackson2ObjectMapperBuilderCustomizer {
return Jackson2ObjectMapperBuilderCustomizer {
it.modules(JavaTimeModule(), KotlinModule())
it.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
}
}
but I'm getting this exception
org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: Listener method could not be invoked with the incoming message
Endpoint handler details:
Method [public phg.entity.monitor.Foley phg.event.monitor.Provisioning.save(phg.entity.monitor.Foley)]
Bean [phg.event.monitor.Provisioning@2212e291]
at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:193) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.onMessage(MessagingMessageListenerAdapter.java:127) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:1547) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.actualInvokeListener(AbstractMessageListenerContainer.java:1473) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:1461) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:1456) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:1405) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:870) [spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:854) [spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$1600(SimpleMessageListenerContainer.java:78) [spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.mainLoop(SimpleMessageListenerContainer.java:1137) [spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1043) [spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]
Caused by: org.springframework.messaging.converter.MessageConversionException: Cannot convert from [[B] to [phg.entity.monitor.Foley] for GenericMessage [payload=byte[263], headers={amqp_receivedDeliveryMode=PERSISTENT, amqp_receivedRoutingKey=foley.new, amqp_receivedExchange=amq.topic, x-mqtt-publish-qos=1, x-mqtt-dup=false, amqp_deliveryTag=1, amqp_consumerQueue=foley.new, amqp_redelivered=false, id=c7fade5a-d803-166a-fe71-0a4f8abb8c4e, amqp_consumerTag=amq.ctag-9bkLtT_xhvQACuHqvx_izQ, timestamp=1551886588001}]
at org.springframework.messaging.handler.annotation.support.PayloadArgumentResolver.resolveArgument(PayloadArgumentResolver.java:144) ~[spring-messaging-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:117) ~[spring-messaging-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:147) ~[spring-messaging-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:116) ~[spring-messaging-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.amqp.rabbit.listener.adapter.HandlerAdapter.invoke(HandlerAdapter.java:49) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:190) ~[spring-rabbit-2.1.4.RELEASE.jar:2.1.4.RELEASE]
... 12 common frames omitted
stepping through the code before I notice that it's using the GenericMessageConverter and that there isn't a Jackson2JsonMessageConverter
According your stack trace there is nothing in the Listener Container to do with your incoming JSON. So, it happens as just pass through with byte[] as a pyalod. What you end up is just an attempt to convert that byte[] to the expected type on your @RabbitListener method. For that purpose, when you don't have a JSON information to convert on the listener container level, you need to configure a DefaultMessageHandlerMethodFactory with desired MappingJackson2MessageConverter. It can be achieve with the RabbitListenerConfigurer:
@Bean
public DefaultMessageHandlerMethodFactory myHandlerMethodFactory() {
DefaultMessageHandlerMethodFactory factory = new DefaultMessageHandlerMethodFactory();
factory.setMessageConverter(new MappingJackson2MessageConverter());
return factory;
}
@Override
public void configureRabbitListeners(RabbitListenerEndpointRegistrar registrar) {
registrar.setMessageHandlerMethodFactory(myHandlerMethodFactory());
}
That MappingJackson2MessageConverter can be configured as a bean for your custom ObjectMapper injection.
来源：https://stackoverflow.com/questions/55016865/how-do-i-convert-from-a-json-byte-array-for-amqp-in-spring-boot