关于rabbitMQ: factory.newConnection()报错com.rabbitmq.client.ShutdownSignalException

1. 异常信息

Exception in thread "main" java.io.IOException
	at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:129)
	at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:125)
	at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:147)
	at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:439)
	at com.rabbitmq.client.impl.recovery.RecoveryAwareAMQConnectionFactory.newConnection(RecoveryAwareAMQConnectionFactory.java:65)
	at com.rabbitmq.client.impl.recovery.AutorecoveringConnection.init(AutorecoveringConnection.java:160)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1216)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1173)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1131)
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1294)
	at util.ConnectionUtil.getConnection(ConnectionUtil.java:40)
	at 基础的_自动ACK.Send.main(Send.java:27)
Caused by: com.rabbitmq.client.ShutdownSignalException: connection error; protocol method: #method(reply-code=530, reply-text=NOT_ALLOWED - vhost /kavito not found, 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:502)
	at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:293)
	at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:141)
	... 9 more

2. 工具类

public class ConnectionUtil {
    private static final String HOST = "127.0.0.1";
    
    private static final Integer PORT = 5672;
    private static final String VIRTUAL_HOST = "/kavito";
    private static final String USERNAME = "chen";
    private static final String PASSWORD = "a123";

    public static Connection getConnection() throws IOException, TimeoutException {
        // 定义链接工厂
        ConnectionFactory factory = new ConnectionFactory();
        // 服务地址
        factory.setHost(HOST);
        // 端口
        factory.setPort(PORT);

        // 设置账号信息,用户名,密码,vhost
        // 设置虚拟机，一个mq服务可以设置多个虚拟机，每个虚拟机就相当于一个独立的mq
        factory.setVirtualHost(VIRTUAL_HOST);
        factory.setUsername(USERNAME);
        factory.setPassword(PASSWORD);

        // 通过工厂获取连接
        Connection connection = factory.newConnection();
        return connection;
    }
}

3. 问题解决
   我这边解决并非使用网上的设置权限

设置权限的参考命令
rabbitmqctl set_permissions -p "/" username ".*" ".*" ".*"

我的问题是由于设置虚拟机导致的问题
rabbitMQ上虚拟机默认为:

而我代码里设置的虚拟机为

解决办法
第一种.将代码中的虚拟机改为

第二种.在RabbitMQ中新建一个名为 /kavito 的虚拟机 (PS:这里的名字根据自己实际来)

并给对应用户设置权限即可