本地Rabbit MQ Java程序连接一直报错的原因_an unexpected connection driver error occured (exc

安装配置：

1. 　安装Erlang
2.    安装rabbitMQ

（注意版本号对应上，可以百度查找对应版本）

配置环境：

1. 环境变量
2. PATH：

运行：

运行以下：

可查看插件：

错误1：SocketException：

2020-07-31 09:41:55,101 ERROR [AMQP Connection 127.0.0.1:5672] com.rabbitmq.client.impl.ForgivingExceptionHandler: An unexpected connection driver error occured
java.net.SocketException: socket closed
	at java.net.SocketInputStream.socketRead0(Native Method)
	at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
	at java.net.SocketInputStream.read(SocketInputStream.java:171)
	at java.net.SocketInputStream.read(SocketInputStream.java:141)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
	at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:288)
	at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:91)
	at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:164)
	at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:580)
	at java.lang.Thread.run(Thread.java:748)

解决：

用户名、密码、权限配置好：

错误2：

2020-08-02 22:16:46,843 ERROR [AMQP Connection 127.0.0.1:5672] org.springframework.amqp.rabbit.connection.CachingConnectionFactory$DefaultChannelCloseLogger: Channel shutdown: connection error; protocol method: #method<connection.close>(reply-code=503, reply-text=COMMAND_INVALID - unknown exchange type 'x-delayed-message', class-id=40, method-id=10)
2020-08-02 22:16:46,856 WARN  [AMQP Connection 127.0.0.1:5672] com.rabbitmq.client.impl.ForgivingExceptionHandler: An unexpected connection driver error occured (Exception message: Connection reset)

解决：

如果不是erlang和rabbitmq版本对不上的问题的话，可能是插件的问题：

补上缺少的插件：

安装插件:rabbitmq_delayed_message_exchange-3.8.0.ez