RMI註冊表和非法參數異常

兩個接口，ISportello和IGestoreSportelli。

public interface IGestoreSportelli extends Remote { 


public boolean sottoponiRichiesta (int id) throws RemoteException; 
public void sottoscrivi (ISportello sportello) throws RemoteException; 

} 


public interface ISportello { 
public boolean serviRichiesta(int id) throws RemoteException; 
}

兩個類實現應用程序的邏輯和實現的接口：GestoreSportelliImplementazione和SportelloImplementazione

public class GestoreSportelliImplementazione implements IGestoreSportelli{ 

public Vector<ISportello> sportelli = new Vector<ISportello>(); 
@Override 
public boolean sottoponiRichiesta(int id) throws RemoteException { 
    System.out.println("Processo la richiesta: id:" + id); 
    int size = sportelli.size(); 
    int i=0; 
    boolean esito = false; 

    do { 
     esito = sportelli.get(i++).serviRichiesta(id); 
    }while(i<size && !esito); 

    return esito; 
} 

@Override 
public void sottoscrivi(ISportello sportello) throws RemoteException { 
    System.out.println("[GESTORE] Aggiungo un nuovo sportello"); 
    System.out.println("SPORTELLO: " + sportello); 
    sportelli.add(sportello); 

} 

    } 


@SuppressWarnings("serial") 
public class SportelloImplementazione extends UnicastRemoteObject implements ISportello{ 

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

@Override 
public boolean serviRichiesta(int id) throws RemoteException { 
    // TODO Auto-generated method stub 
    return true; 
} 

}

第二類是存根（我將開發，如果進一步的時候我就知道爲什麼該程序無法正常工作）。

兩類與主要功能即「包裝」上述兩個類

public class GestoreSportelliServer { 

public static void main(String[] args) { 
    try { 
    IGestoreSportelli gestore = new GestoreSportelliImplementazione(); 
    Registry rmi = LocateRegistry.getRegistry(); 
    IGestoreSportelli gestoreRef = (IGestoreSportelli) UnicastRemoteObject.exportObject(gestore,0); 
    System.out.println("[GESTORE] AVVIATO"); 
    System.out.println("[GESTORE] " + gestore); 
    rmi.rebind("gestore", gestoreRef); 
    System.out.println("[GESTORE] Registrato"); 
    } 
    catch (RemoteException r) 
    { 
     r.printStackTrace(); 
    } 
} 
} 



public class SportelloServer { 

public static void main(String[] args) { 
    try { 
    Registry rmi = LocateRegistry.getRegistry(); 
    ISportello sportello = new SportelloImplementazione(); 
    System.out.println("[SPORTELLO] : " + sportello); 
    IGestoreSportelli gestore =(IGestoreSportelli) rmi.lookup("gestore"); 
    gestore.sottoscrivi(sportello); 
    System.out.println("[SPORTELLO] Sottoscrizione avvenuta"); 
    } 
    catch (RemoteException r) 
    { 
     r.printStackTrace(); 

    } 

    catch (NotBoundException n) 
    { 
     n.printStackTrace(); 
    } 

    catch (IllegalArgumentException i) 
    { 
     i.printStackTrace();

的System.out.println（i.getmessage（））; }

} 

}

我運行主類兩種differend提示窗口，第三個提示窗口運行RMIREGISTRY。 SportelloServer類不起作用。它運行到一個例外：

java.lang.IllegalArgumentException: [email protected] 
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source) 
at sun.rmi.transport.Transport$1.run(Unknown Source) 
at sun.rmi.transport.Transport$1.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at sun.rmi.transport.Transport.serviceCall(Unknown Source) 
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source) 
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source) 
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
at java.lang.Thread.run(Unknown Source) 
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source) 
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source) 
at sun.rmi.server.UnicastRef.invoke(Unknown Source) 
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Source) 
at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source) 
at com.sun.proxy.$Proxy1.sottoscrivi(Unknown Source) 
at server.SportelloServer.main(SportelloServer.java:19) 
[email protected]

的第19行是：

gestore.sottoscrivi(sportello);

來源

2016-05-29 EagleOne

有沒有更多的堆棧跟蹤？ – EJP

不，沒有。我不知道我做錯了什麼，這是一個非常簡單的代碼。 – EagleOne

誰印的是底線？只讀'java.lang.ClassCastException @ ...'的那個？所有這些類和接口是否在同一個包中？ – EJP

兩個接口都有遠程擴展：

public interface ISportello extends Remote{ 
public boolean serviRichiesta(int id) throws RemoteException; 
}

是正確的ISportello代碼

來源

2016-06-21 17:08:03 EagleOne

RMI註冊表和非法參數異常

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