rabbitmq初学之连接测试错误记录

太过爱你忘了你带给我的痛 2022-06-02 11:46 126阅读 0赞

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)

5.com.rabbitmq.client.AlreadyClosedException: clean connection shutdown; reason: Attempt to use closed错误

![SouthEast][]

[rabbitmq-server-3.3.1.]: http://www.rabbitmq.com/releases/rabbitmq-server/v3.3.1/rabbitmq-server-3.3.1.exe
[SouthEast]: /images/20220602/b7ce33af954046bda9ad07f06db7317b.png