//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addressesspring:  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