RabbitMQ异常：ACCESS_REFUSED - Login was refused using authentication mechanism PLAIN.

生命无罪，健康万岁，我是laity。

Seven times have I despised my soul:

For the first time, it feigned humility when it could have been aggressive;

The second time, when it was empty, fill it with lust;

The third time, between difficult and easy, it chose easy;

For the fourth time, it made a mistake, but comforted itself by saying that others would also make mistakes;

The fifth time, it is free and weak, but it is regarded as the tenacity of life;

The sixth time, when it despises an ugly face, it does not know that it is one of its own masks;

For the seventh time, it leaned sideways in the mud of life, although it was not reconciled, it was timid.

Analyze error messages

An error occurred when starting rabbitmq:

ACCESS_REFUSED - Login was refused using authentication mechanism PLAIN. For details see the broker logfile.

Check whether the account password is correct
Check if your account password permission is granted
Is port 5672 normally open to the outside world?

Solution

First of all, let me explain that there is no problem with my rabbitmq environment setup, and it has passed
I created the admin through the command line (granted admin privileges), but did not specify the virtual hosts that can be accessed (Can access virtual hosts)
Virtual Host

A virtual host, representing a collection of exchanges, message queues, and related objects. Virtual hosts are separate domains of servers that share the same authentication and encryption environment. Each vhost is essentially a mini version of RabbitMQ server, with its own queue, switch, binding and permission mechanism.
vhost 是 AMQP 概念的基础，必须在连接时指定，RabbitMQ 默认的 vhost 是 / 。

# 进入容器
docker exec -it rabbitmq /bin/bash
# 安装web端插件 - 当你进入不了管理页面时可能是没有开启这个插件
rabbitmq-plugins enable rabbitmq_management
# 新增用户 账号 admin 密码 admin
rabbitmqctl add_user admin admin
# 设置用户操作权限
rabbitmqctl set_user_tags admin administrator
#  退出
Exit
重新启动 mq
docker restart tabbitmq

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So idea generates an exception and cannot connect to rabbitmq

An unexpected connection driver error occured

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We need to set access permissions for the account
1.

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With access to the virtual machine, the program can successfully access

Personal experience is for reference only~