Question

在尝试实现我的第一个RMI程序时，我在测试它时遇到了麻烦。

我编译了程序并试图启动服务器，但随后发生了错误。

关于我的服务器：1个接口+ 1个实现该接口的类+我的服务器类

接口

package src;
import java.rmi.*;
public interface Information extends Remote {

// methods than can be called remotly

public String getInformation() throws RemoteException;

}

实现它的类

package src;
import java.rmi.server.UnicastRemoteObject;
import java.rmi.RemoteException;

public class InformationImpl extends UnicastRemoteObject implements Information {

protected InformationImpl() throws RemoteException {
    super();
}

public String getInformation() throws RemoteException {
    System.out.println("method getInformation()");
    return "hello";
}
}

我的服务器类：

package src;

import java.net.InetAddress;
import java.net.MalformedURLException;
import java.net.UnknownHostException;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;

public class LanceServeur {

  public static void main(String[] args) {
   try {
     LocateRegistry.createRegistry(1099);
     InformationImpl informationImpl = new InformationImpl();
     Naming.rebind("MyServer", informationImpl);
     System.out.println("Server launched");
   } 

   catch (Exception e) {
     e.printStackTrace();
   }
  }
 }

和我的客户类：

 package src;

import java.net.MalformedURLException;
import java.rmi.Naming;
import java.rmi.NotBoundException;
import java.rmi.Remote;
import java.rmi.RemoteException;

public class lanceClient {

public static void main(String[] args) {
   System.out.println("Lancement du client");
   try {
     Remote r = Naming.lookup("rmi://localhost:1099/TestRMI");
     System.out.println(r);
     if (r instanceof Information) {
        String s = ((Information) r).getInformation();
        System.out.println("chaine renvoyee = " + s);
     }
   } catch (MalformedURLException e) {
     e.printStackTrace();
   } catch (RemoteException e) {
     e.printStackTrace();
   } catch (NotBoundException e) {
     e.printStackTrace();
   }
   System.out.println("end of client");
  }
 }

如果您想查看正确的行，请检查我的github，它更简单： https://github.com/TLprojet/MUD_Java

关于错误，这里是：

java.rmi.ConnectIOException: Exception creating connection to: 0.0.21.214; nested exception is: 
    java.net.SocketException: Invalid argument or cannot assign requested address
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:631)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:209)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:196)
    at java.rmi/sun.rmi.server.UnicastRef.newCall(UnicastRef.java:338)
    at java.rmi/sun.rmi.registry.RegistryImpl_Stub.rebind(RegistryImpl_Stub.java:147)
    at java.rmi/java.rmi.Naming.rebind(Naming.java:177)
    at src.LanceServeur.main(LanceServeur.java:16)
Caused by: java.net.SocketException: Invalid argument or cannot assign requested address
    at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
    at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
    at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
    at java.base/java.net.Socket.connect(Socket.java:591)
    at java.base/java.net.Socket.connect(Socket.java:540)
    at java.base/java.net.Socket.<init>(Socket.java:436)
    at java.base/java.net.Socket.<init>(Socket.java:213)
    at java.rmi/sun.rmi.transport.tcp.TCPDirectSocketFactory.createSocket(TCPDirectSocketFactory.java:40)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)
    ... 6 more

如何在Java中测试RMI程序

0 个答案: