Java RMI中的连接拒绝错误

Question

I've created an RMI service that includes some method calls from another computer. Server and client have valid IP addresses and when I try to run the program in the client I get a connection refused exception.

When I change the IP address to localhost it will solve my problem, but when I try remote to another IP address the same error occurs.

Answer 1

There are three cases of 'connection refused' in RMI:

1. When calling bind()/rebind()/unbind() . The Registry isn't started at the host:port or URL you're using.
2. When calling lookup() . If (1) succeeded, you're trying to lookup the wrong Registry. The Registry normally runs at the same host as the server.
3. When calling a remote method. This means that you need to set java.rmi.server.hostname at the server JVM before exporting any remote objects. See the RMI FAQ item A.1 for why. A better fix is to fix the DNS or hosts file.

Answer 2

Try use this before register rmi

System.setProperty("java.rmi.server.hostname", REGISTRY_HOST);

here REGISTRY_HOST is the ip address.