RabbitMQ的权限设置

当用java等一起驱动连接rabbitmq的时候，全部配置都正确了，但是，还是报错。这就是权限的问题。

java.io.IOException    at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:116)    at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:112)    at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:134)    at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:388)    at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection(RecoveryAwareAMQConnectionFactory.java:62)    at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.init(AutorecoveringConnection.java:99)    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:911)    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:870)    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:828)    at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:966)    at com.ydh.util.ConnectionFactoryUtil.getInstance(ConnectionFactoryUtil.java:31)    at com.ydh.base.Send.main(Send.java:13)Caused by: com.rabbitmq.client.ShutdownSignalException: connection error; protocol method: #method<connection.close>(reply-code=530, reply-text=NOT_ALLOWED - access to vhost '/' refused for user 'ydh', class-id=10, method-id=40)    at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:66)    at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:36)    at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:398)    at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:244)    at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:128)    ... 9 moreException in thread "main" java.lang.NullPointerException    at com.ydh.base.Send.main(Send.java:14)log4j:WARN No appenders could be found for logger (com.rabbitmq.client.impl.ForgivingExceptionHandler).log4j:WARN Please initialize the log4j system properly.log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

如下操作来解决：