1、假设写错了host （如：factory.setHost("locathost"); ）报错：

Exception in thread "main" java.net.UnknownHostException: locathost

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:195)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)

at java.net.Socket.connect(Socket.java:529)

at com.rabbitmq.client.impl.FrameHandlerFactory.create(FrameHandlerFactory.java:32)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:588)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:612)

at com.aaa.test.Send.main(Send.java:19)

2、假设写错了HOST的IP（如：factory.setHost("192.168.1.10"); ）无此地址， 报错：

Exception in thread "main" java.net.ConnectException: Connection timed out: connect

at java.net.PlainSocketImpl.socketConnect(Native Method)

at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)

at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)

at java.net.Socket.connect(Socket.java:529)

at com.rabbitmq.client.impl.FrameHandlerFactory.create(FrameHandlerFactory.java:32)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:588)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:612)

at com.aaatest.Send.main(Send.java:19)

3、假设写错portPORT（如：factory.setPort(5678);） 报错：

Exception in thread "main" java.net.ConnectException: Connection refused: connect

at java.net.PlainSocketImpl.socketConnect(Native Method)

at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)

at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)

at java.net.Socket.connect(Socket.java:529)

at com.rabbitmq.client.impl.FrameHandlerFactory.create(FrameHandlerFactory.java:32)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:588)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:612)

at com.aaa.test.Send.main(Send.java:19)

4、假设写错username或者password，报错：

Exception in thread "main" com.rabbitmq.client.AuthenticationFailureException: ACCESS_REFUSED - Login was refused using authentication mechanism PLAIN. For details see the broker logfile.

at com.rabbitmq.client.impl.AMQConnection.start(AMQConnection.java:338)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:590)

at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:612)

at com.aaa.test.Send.main(Send.java:19)