我刚开始使用 Rabbitmq ，并且尝试将其与grails一起使用。我在grails中成功设置了Rabbitmq。当我使用用户名=“guest”和密码=“guest”创建连接时，它可以正常工作，但是当我尝试使用手动创建的用户时，会引发一些错误，如下所示:

    Error initializing the application: null 
    java.io.IOException 
    at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106) 
    at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102) 
    at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:124) 
    at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:376) 
    at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection(RecoveryAwareAMQConnectionFactory.java:36) 
    at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.init(AutorecoveringConnection.java:83) 
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:595) 
    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:637) 
    at com.budjb.rabbitmq.connection.ConnectionContextImpl.start(ConnectionContextImpl.groovy:101) 
    at com.budjb.rabbitmq.connection.ConnectionManagerImpl.start(ConnectionManagerImpl.groovy:191) 
    at com.budjb.rabbitmq.connection.ConnectionManagerImpl$_start_closure4.doCall(ConnectionManagerImpl.groovy:176) 
    at com.budjb.rabbitmq.connection.ConnectionManagerImpl.start(ConnectionManagerImpl.groovy:174) 
    at com.budjb.rabbitmq.RabbitContextImpl.startConnections(RabbitContextImpl.groovy:193) 
    at com.budjb.rabbitmq.RabbitContextImpl.start(RabbitContextImpl.groovy:78) 
    at com.budjb.rabbitmq.RabbitContextProxy.start(RabbitContextProxy.groovy:188) 
    at RabbitmqNativeGrailsPlugin$_closure2.doCall(RabbitmqNativeGrailsPlugin.groovy:189) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:262) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
    at java.lang.Thread.run(Thread.java:744) 
Caused by: com.rabbitmq.client.ShutdownSignalException: connection error 
    at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67) 
    at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:33) 
    at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:348) 
    at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:221) 
    at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:118) 
    ... 17 more 
Caused by: java.io.EOFException 
    at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:290) 
    at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95) 
    at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:139) 
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:534) 
    ... 1 more 

请您参考如下方法:

实际上我遇到了同样的问题，您只需先检查或按照以下步骤操作即可:

1)使用命令创建用户sudo rabbitmqctl add_user username password
2)现在为您的用户名设置标签为adminsudo rabbitmqctl set_user_tags username administrator
3)现在通过创建一个新的virtualHostsudo rabbitmqctl add_vhost test
4)之后，给予完全许可sudo rabbitmqctl set_permissions -p test username ".*" ".*" ".*"
5)现在终于在您的配置文件中定义

connection host: "Ip for your server", username: "admin", password: "password" , virtualHost: "test"