SpringBoot中使用RabbitMQ，解決無法連接AmqpConnectException: java.net.ConnectException: Connection timed out:

org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused: connect
	at org.springframework.amqp.rabbit.support.RabbitExceptionTranslator.convertRabbitAccessException(RabbitExceptionTranslator.java:62) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:510) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.connection.CachingConnectionFactory.createConnection(CachingConnectionFactory.java:751) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.createConnection(ConnectionFactoryUtils.java:214) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.core.RabbitTemplate.doExecute(RabbitTemplate.java:2092) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:2065) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:2045) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.core.RabbitAdmin.getQueueInfo(RabbitAdmin.java:405) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.core.RabbitAdmin.getQueueProperties(RabbitAdmin.java:389) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.attemptDeclarations(AbstractMessageListenerContainer.java:1820) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.redeclareElementsIfNecessary(AbstractMessageListenerContainer.java:1801) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.initialize(SimpleMessageListenerContainer.java:1337) [spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1183) [spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
Caused by: java.net.ConnectException: Connection refused: connect
	at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_151]
	at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) ~[na:1.8.0_151]
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_151]
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_151]
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_151]
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_151]
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_151]
	at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_151]
	at com.rabbitmq.client.impl.SocketFrameHandlerFactory.create(SocketFrameHandlerFactory.java:60) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1102) ~[amqp-client-5.4.3.jar:5.4.3]
	at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1054) ~[amqp-client-5.4.3.jar:5.4.3]
	at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.connect(AbstractConnectionFactory.java:526) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:473) ~[spring-rabbit-2.2.0.RELEASE.jar:2.2.0.RELEASE]
	... 12 common frames omitted