连接到位于路由器后面的 RMI 服务器时出现问题
假设路由器的公共IP是92.1.85.179
服务器计算机的本地IP是192.168.0.2
路由器设置为将 92.1.85.179:5678 转发到 192.168.0.2:5678
在服务器中我有：
System.setProperty( "java.rmi.server.hostname" , "92.1.85.179" );
Registry registry = LocateRegistry.createRegistry( 5678 );
registry.rebind( "TheWebServer" , webServerInt );
客户端有：
Registry registry = LocateRegistry.getRegistry( "92.1.85.179" , 5678 );
server = (WebServerInterface) registry.lookup( "TheWebServer" );
当客户端位于服务器本地网络上时，就可以了。当客户端位于本地网络之外时，它会收到 java.rmi.ConnectException: 连接拒绝主机: 192.168.0.2;
显然，服务器为客户端提供的 IP 为 192.168.0.2，因为它没有出现在代码中，我认为 System.setProperty( "java.rmi.server.hostname" , "92.1.85.179" ); 应该改变。
任何意见将不胜感激。
Let's say the public IP of the router is 92.1.85.179
The local IP of the computer with the server is 192.168.0.2
The router is set to forward 92.1.85.179:5678 to 192.168.0.2:5678
In the server I have:
System.setProperty( "java.rmi.server.hostname" , "92.1.85.179" );
Registry registry = LocateRegistry.createRegistry( 5678 );
registry.rebind( "TheWebServer" , webServerInt );
The client has:
Registry registry = LocateRegistry.getRegistry( "92.1.85.179" , 5678 );
server = (WebServerInterface) registry.lookup( "TheWebServer" );
When client is on the network local to the server it's ok. When the client is outside the local network it gets java.rmi.ConnectException: Connection refused to host: 192.168.0.2;
Obviously the server is giving the client the IP of 192.168.0.2 as it doesn't appear in the code, which I thought System.setProperty( "java.rmi.server.hostname" , "92.1.85.179" ); was supposed to change.
Any input would be greatly appreciated.
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您还需要在端口 5678 上导出远程对象，并且需要在导出任何远程对象之前设置 java.rmi.server.hostname。
You need to export your remote objects on port 5678 too, and you need to set java.rmi.server.hostname before you export any remote objects.