JMXConnectorFactory.connect 出现“ Java .rmi.ConnectException: Connection refused to host: localhost”

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这是一个创建于 821 天前的主题，其中的信息可能已经有所发展或是发生改变。

JMXConnectorFactory.connect 的时候出现异常，在网上找了很久，完全没有任何思路。🤕有谁知道怎么解决吗？或者提供一下思路，Thanks in advance.

java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
        java.net.ConnectException: Connection refused (Connection refused)]
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:369)
        at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:270)
        at *** internal code ***
        at *** internal code ***
Caused by: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
        java.net.ConnectException: Connection refused (Connection refused)]
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:136)
        at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:205)
        at javax.naming.InitialContext.lookup(InitialContext.java:417)
        at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1955)
        at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1922)
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:287)
        ... 3 more
Caused by: java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
        java.net.ConnectException: Connection refused (Connection refused)
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:623)
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
        at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:342)
        at sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:116)
        at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:132)
        ... 8 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
        at java.net.Socket.connect(Socket.java:606)
        at java.net.Socket.connect(Socket.java:555)
        at java.net.Socket.<init>(Socket.java:451)
        at java.net.Socket.<init>(Socket.java:228)
        at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)
        at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:148)
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:617)
        ... 13 more
Create MBeanServerConnection error!

4 条回复

PendingOni

2022-08-24 11:05:52 +08:00

1-可以试试改 /etc/hosts 里面的 localhost 的那项, 改成公网 IP
2-或者在 RMI 的服务端启动脚本里面显式的更改 hostname [ -Djava.rmi.server.hostname=$hostname ]

PendingOni

2022-08-24 11:09:13 +08:00

https://www.cnblogs.com/qianxinggz/p/13277093.html

JasonLaw

2022-08-24 15:13:34 +08:00

@PendingOni #1 我现在已经解决了，不过我不太确定我是怎么解决的，因为我现在已经重现不了了。我怀疑是 server 根本没有启动起来，因为我在本地试过了，如果 server 没有启动，尝试 connect 就会出现这个异常，启动后，JMXConnectorFactory.connect 能够正常执行。

诡异的是，昨天的日志根本没有任何异常信息。

anyway ，现在已经搞定了。

PendingOni

2022-08-24 15:18:06 +08:00

@JasonLaw Fine.