springboot rabbitmq 找不到隊列

錯誤報告：

org.springframework.amqp.rabbit.listener.BlockingQueueConsumer$DeclarationException: Failed to declare queue(s):[chatMessage]
	at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.attemptPassiveDeclarations(BlockingQueueConsumer.java:721) ~[spring-rabbit-1.7.9.RELEASE.jar:na]
	at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:598) ~[spring-rabbit-1.7.9.RELEASE.jar:na]
	at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1504) [spring-rabbit-1.7.9.RELEASE.jar:na]
	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.io.IOException: null
	at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:105) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:101) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:123) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:992) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:50) ~[amqp-client-4.0.3.jar:4.0.3]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
	at org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:1027) ~[spring-rabbit-1.7.9.RELEASE.jar:na]
	at com.sun.proxy.$Proxy261.queueDeclarePassive(Unknown Source) ~[na:na]
	at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.attemptPassiveDeclarations(BlockingQueueConsumer.java:700) ~[spring-rabbit-1.7.9.RELEASE.jar:na]
	... 3 common frames omitted
Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no queue 'chatMessage' in vhost '/', class-id=50, method-id=10)
	at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:66) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:32) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:366) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:229) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:117) ~[amqp-client-4.0.3.jar:4.0.3]
	... 12 common frames omitted
Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no queue 'chatMessage' in vhost '/', class-id=50, method-id=10)
	at com.rabbitmq.client.impl.ChannelN.asyncShutdown(ChannelN.java:505) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.ChannelN.processAsync(ChannelN.java:336) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand(AMQChannel.java:143) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:90) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQConnection.readFrame(AMQConnection.java:634) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQConnection.access$300(AMQConnection.java:47) ~[amqp-client-4.0.3.jar:4.0.3]
	at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:572) ~[amqp-client-4.0.3.jar:4.0.3]
	... 1 common frames omitted

　　錯誤原因：找不到對應的隊列，我這里是chatMessage隊列找不到，因為當前應用主要收消息，因此並沒有在@Configuration文件中配置該chatMessage隊列，

所以會造成如何rabbitmq里面有該chatMessage隊列則啟動不出錯，如果沒有啟動就出錯了，在分布式系統中容易忽略這個問題導致潛在錯誤的出現

 

解決方案：在rabbitmq的java配置類里面聲明該隊列即可

@Configuration
public class RabbitMQConfig {
	//direct模式，直接根據隊列名稱投遞消息
    @Bean
    public Queue logOpQueue(){
        return new Queue("oplog");
    }

    @Bean
    public Queue logErrQueue(){
        return new Queue("errlog");
    }

    //不要偷懶 一定要聲明
    @Bean
    public Queue chatMessageQueue(){
        return new Queue("chatMessage");
    }

}