我打算发布这个问题，但我想我已经找到了答案。我希望有人能提供一个理由来进一步公开知识。
我正在将 RabbitMQ 集成到我的 Spring 启动应用程序中。
启动我的 Spring 启动应用程序后，我不断获得此堆栈跟踪
org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused (Connection refused)
at org.springframework.amqp.rabbit.support.RabbitExceptionTranslator.convertRabbitAccessException(RabbitExceptionTranslator.java:62) ~[spring-rabbit-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:484) ~[spring-rabbit-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.amqp.rabbit.connection.CachingConnectionFactory.createConnection(CachingConnectionFactory.java:626) ~[spring-rabbit-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.createConnection(ConnectionFactoryUtils.java:240) ~[spring-rabbit-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.doExecute(RabbitTemplate.java:1797) ~[spring-rabbit-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:1771) ~[spring-rabbit-2.0.5.RELEASE.jar:2.0.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:1752) ~[spring-rabbit-2.0.5.RELEASE.jar:2.0.5.RELEASE]
...
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_172]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_172]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_172]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_172]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_172]
我已经将 RabbitMQ 切成裸露的骨头，只有pom.xml依赖性，在application.properties中具有以下内容
spring.rabbitmq.host=localhost
spring.rabbitmq.port=15672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
我验证了Rabbit MQ已启动并正在运行，甚至可以进入GUI
我的解决方案是将spring.rabbitmq.port更改为5672(删除 1(
任何人都可以提供技术答案吗？是因为 RabbitMQ 侦听该端口 5672 并且仅在 15672 上提供前端
吗？RabbitMq 使用高级消息队列协议 (AMQP(。
在 rabbitmq.conf 中，提供的 tcp 端口从 Java 应用程序中获取 RabbitMq 的端口。
listeners.tcp.default = 5672
RabbitMQ 管理控制台或 Web 管理员使用 15672(默认(端口。