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

问题 ：

org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused (Connection refused)

2020-08-20 11:38:28.338  INFO 19876 --- [nio-8888-exec-1] com.dalaoyang.sender.Sender              : 简单消息发送时间：Thu Aug 20 11:38:28 GMT+08:00 2020
2020-08-20 11:38:36.005 ERROR 19876 --- [nio-8888-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused: connect] with root cause

java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_77]
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) ~[na:1.8.0_77]
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_77]
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_77]
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_77]

##rabbitmq
spring.rabbitmq.host=192.168.2.37
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.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

解决方案

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:(安装目录每个人都不同,根据自己的目录决定)

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（i进入编辑模式，输入结束按esc，wq保存退出）

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

4、保存后记得重启rabbitmq服务器，再次启动Java项目即可正常的访问了！！！