即使将端口公开给主机，尝试将主机上的RMI客户端应用程序与Docker容器中的服务器连接时也遇到问题。

这是我的docker-compose.yml

version: '3.3'
services:
  RMI_SERVER:
    container_name: RMI_SERVER
    image: rmiserver:latest
    entrypoint: /bin/sh -c ./launchServer.sh
    ports:
      - "8888:8888"
  RMI_CLIENT:
    container_name: RMI_CLIENT
    image: rmiclient:latest
    entrypoint: /bin/sh -c ./launchClient.sh
    environment:
      REMOTE_HOST: RMI_SERVER
    links:
      - RMI_SERVER
    depends_on:
      - RMI_SERVER

我得到的错误是：

17:02:10.928 [main] INFO com.javacodegeeks.core.rmi.remoteclient.Remoteclient - Locating Registry: remoteHost:localhost port:8888
17:02:11.468 [main] INFO com.javacodegeeks.core.rmi.remoteclient.Remoteclient - Lookup Interface: remoteID:RMI_EXAMPLE
17:02:53.564 [main] ERROR com.javacodegeeks.core.rmi.remoteclient.Remoteclient - Connection refused to host: 192.168.32.2; nested exception is: 
    java.net.connectexception: Connection timed out: connect
java.rmi.connectexception: Connection refused to host: 192.168.32.2; nested exception is: 
    java.net.connectexception: Connection timed out: connect
    at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619)
    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.invoke(UnicastRef.java:129)
    at java.rmi.server.RemoteObjectinvocationHandler.invokeRemoteMethod(RemoteObjectinvocationHandler.java:227)
    at java.rmi.server.RemoteObjectinvocationHandler.invoke(RemoteObjectinvocationHandler.java:179)
    at com.sun.proxy.$Proxy0.capitalize(Unknown Source)
    at com.javacodegeeks.core.rmi.remoteclient.Remoteclient.main(Remoteclient.java:28)
Caused by: java.net.connectexception: Connection timed out: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at java.net.Socket.connect(Socket.java:538)
    at java.net.Socket.<init>(Socket.java:434)
    at java.net.Socket.<init>(Socket.java:211)
    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:613)
    ... 7 common frames omitted

所有代码和docker配置都可以在这里找到 https://github.com/MaurizioSodano/java.RMI.Docker