【RabbitMQ】连接RabbitMQ异常： com.rabbitmq.client.ShutdownSignalException: connection error； protocol meth

测试该工具类：

1. package com.wj.utils;

2.  

3. import com.rabbitmq.client.Connection;

4. import com.rabbitmq.client.ConnectionFactory;

5.  

6. import java.io.IOException;

7. import java.util.concurrent.TimeoutException;

8.  

9. /**

10. * @创建人 wj

11. * @创建时间 2018/11/5

12. * @描述

13. */

14. public class ConnectionUtil {

15. private static final String host = "localhost";

16. private static final int port = 5672;

17. private static final String username="wj";

18. private static final String password="pwd";

19.  
20.  

21. /**

22. * 获取RabbitMQ Connection连接

23. * @return

24. * @throws IOException

25. * @throws TimeoutException

26. */

27. public static Connection getConnection() throws IOException, TimeoutException {

28. ConnectionFactory connectionFactory = new ConnectionFactory();

29. connectionFactory.setHost(host);

30. connectionFactory.setPort(port);

31. connectionFactory.setUsername(username);

32. connectionFactory.setPassword(password);

33. return connectionFactory.newConnection();

34. }

35. }

异常：

1. Exception in thread "main" java.io.IOException

2. at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106)

3. at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102)

4. at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:124)

5. at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:378)

6. at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:678)

7. at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:722)

8. at upsmart.zhsen.ServerProducer.main(ServerProducer.java:33

9.  

10. 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 'wj', class-id=10, method-id=40)

解决方法：

输入：rabbitmqctl set_permissions -p "/" username ".*" ".*" ".*"