Java RMI ServerException - java.lang.ClassNotFoundException：org.prog.rmi.RmiServer_Stub

Question

我已經繼承了一些Java RMI客戶機/服務器代碼，雖然它在一臺機器上運行良好，但我一直無法獲得它在我的開發環境中運行。

問題是，當我使用以下java.exe -Djava.security.policy=conf\server.policy -SRC;. -Djava.library.path=. org.prog.rmi.RmiServer

我碰到下面的錯誤運行服務器：

java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
java.lang.ClassNotFoundException: org.prog.rmi.RmiServer_Stub (no security manager: RMI class loader disabled) 
    at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:396) 
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:250) 
    at sun.rmi.transport.Transport$1.run(Transport.java:159) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at sun.rmi.transport.Transport.serviceCall(Transport.java:155) 
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790) 
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649) 
    ... 

我server.policy文件

grant { 
    permission java.security.AllPermission; 
}; 

我的Java代碼：

 package org.prog.rmi; 

     import java.rmi.Naming; 
     import java.rmi.RemoteException; 
     import java.rmi.RMISecurityManager; 
     import java.rmi.server.UnicastRemoteObject; 
     import java.rmi.registry.*; 

     public class RmiServer extends UnicastRemoteObject 
      implements RmiServerIntf { 

     private BatchApi bapi; 
     private String iniFileLocation; 
     private String layoutOption; 
     private int addressCount = 0; 
     private RefInt apiHandle = new RefInt(); 


     public RmiServer(String iniFileLocation,String layoutOption) throws RemoteException 
     { super(); 
      this.iniFileLocation = iniFileLocation; 
      this.layoutOption = layoutOption; 
      initAPI(); 
      startupAPI(); 
      openAPI();  
     } 

     public static void main(String args[]) 
     { 
      System.out.println("RMI server started"); 

      // Create and install a security manager 
      if (System.getSecurityManager() == null) 
      { 
       System.setSecurityManager(new RMISecurityManager()); 
       System.out.println("Security manager installed."); 
      } 
      else 
       System.out.println("Security manager already exists."); 

      try //special exception handler for registry creation 
      { 
       LocateRegistry.createRegistry(1099); 
       System.out.println("java RMI registry created."); 
      } 
      catch (RemoteException e) 
      { 
       //do nothing, error means registry already exists 
       System.out.println("java RMI registry already exists."); 
      } 

      try 
      { 
       //Instantiate RmiServer 
       for (String arg: args){ 
        System.out.println(arg); 
       } 

       RmiServer obj = new RmiServer(args[0],args[1]); 

       // Bind this object instance to the name "RmiServer" 
       Naming.rebind("//127.0.0.1/RmiServer", obj); 
       System.out.println("PeerServer bound in registry"); 

      } 
      catch (Exception e) 
      { 
       System.err.println("RMI server exception:"); 
       e.printStackTrace(); 
      } 
     }  
} 

我已經看到了有關的java.rmi.server.codebase解決方案，但沒有任何運氣設置此任

Answer 1

經過一番深入調查並按照RMI教程就顯得有在端口1099

的RMI註冊服務器的一個問題。當我盯着另一個端口（例如2005）的RMI註冊服務器，改變了這些線路代碼

LocateRegistry.createRegistry(2005); 

和

Naming.rebind("//127.0.0.1:2055/RmiServer", obj); 

這成功地運行，沒有錯誤，我的客戶是能夠連接。

我希望這個答案可以幫助其他人解決這個錯誤。讓我知道是否有人需要更詳細的信息。

Answer 2

您還沒有再生存根與RMIC，或註冊表不通過它的類路徑訪問它。