SpringCloud集成rabbitmq:org.springframework.amqp.AmqpConnectException: java.net.ConnectException的解决办法

org.springframework.integration.amqp.outbound.AmqpOutboundEndpoint@12091f5c]; nested exception is org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused (Connection refused)
org.springframework.messaging.MessageHandlingException: error occurred in message handler [org.springframework.integration.amqp.outbound.AmqpOutboundEndpoint@12091f5c]; nested exception is org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused (Connection refused), failedMessage=GenericMessage [payload=byte[36], headers={contentType=application/json, id=114cf3df-b2ca-42ba-2e28-450e22a9d350, timestamp=1595252407133}]
	at org.springframework.integration.support.utils.IntegrationUtils.wrapInHandlingExceptionIfNecessary(IntegrationUtils.java:191)
	at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:187)
	at org.springframework.cloud.stream.binder.AbstractMessageChannelBinder$SendingHandler.handleMessageInternal(AbstractMessageChannelBinder.java:1124)
	at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:177)
	...

spring:
	rabbitmq:
	  host: localhost
	  port: 5672
	  username: guest
	  password: guest

注意：用户使用的是guest,而guest只能默认只能连接本机IP(也就是127.0.0.1)，所以会报org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused: connect

解决方法：就是修改rabbitmq的配置文件rabbitmq.config 增加一行代码

1、进入rabbitmq的安装目录

cd /usr/local/Cellar/rabbitmq/3.8.3

2、编辑abbitmq.config配置文件

vim etc/rabbitmq.config

3、增加如下代码

[{rabbit, [{loopback_users, []}]}].