//具体参看了配置的源码
org.springframework.boot.autoconfigure.amqp.RabbitProperties
//RabbitMQ单机
spring:
rabbitmq:
host: localhost
port: 5672
username: your_username
password: your_password
//或者 RabbitMQ单机，只使用addresses
spring:
rabbitmq:
addresses:ip1:port1
username: your_username
password: your_password
//RabbitMQ集群，addresses一定要逗号分隔
spring:
rabbitmq:
addresses:ip1:port1,ip2:port2,ip3:port3
username: your_username
password: your_password
原文：https://www.cnblogs.com/tiancai/p/9890493.html