rabbitmq初学之连接测试
最近在搞接口，需要用到rabbitmq，在公司搞了一个下午还是连接不上，后来细看了英文说明，
测试
连接成功，得出如下报错几点。
我用的安装包：otp_win64_17.0.exe（erlang vm）和
rabbitmq-server-3.3.1.
exe 最后测试成功。
连接的代码片段如下
com.rabbitmq.client.ConnectionFactory factory = new com.rabbitmq.client.ConnectionFactory();
factory.setHost("localhost");
factory.setPort(5672);
factory.setUsername("guest");
factory.setPassword("guest");
默认安装好rabbitmq就有服务（windows服务），但没有web监控（localhost:15672）;
默认的端口就是5672，用户guest密码guest，但这个用户名只能在本机访问，如果要网络访问，需要做用户管理；
1、如果写错了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、如果写错了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、如果写错端口PORT（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、如果写错用户名或者密码，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)
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