摘要：
错误报告：org.springframework.amqp.rabbit.listener.BlockingQueueConsumer$DeclarationException:Failedtodeclarequeue(s):[chatMessage]atorg.springframework.amqp.rabbit.listener.BlockingQueueConsumer.attemptPa
错误报告：
org.springframework.amqp.rabbit.listener.BlockingQueueConsumer$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
错误原因：找不到对应的队列，我这里是chatMessage队列找不到，因为当前应用主要收消息，因此并没有在@Configuration文件中配置该chatMessage队列，
所以会造成如何rabbitmq里面有该chatMessage队列则启动不出错，如果没有启动就出错了，在分布式系统中容易忽略这个问题导致潜在错误的出现
解决方案：在rabbitmq的java配置类里面声明该队列即可
@Configuration
public class RabbitMQConfig {
//direct模式，直接根据队列名称投递消息
@Bean
public Queue logOpQueue(){
return new Queue("oplog");
}
@Bean
public Queue logErrQueue(){
return new Queue("errlog");
}
//不要偷懒 一定要声明
@Bean
public Queue chatMessageQueue(){
return new Queue("chatMessage");
}
}