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

Question

我已经继承了一些Java RMI客户机/服务器代码，虽然它在一台机器上运行良好，但我一直无法获得它在我的开发环境中运行。

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

我碰到下面的错误运行服务器：

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代码：

 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(); 
      } 
     }  
} 

我已经看到了有关的java.rmi.server.codebase解决方案，但没有任何运气设置此任

Answer 1

经过一番深入调查并按照RMI教程就显得有在端口1099

的RMI注册服务器的一个问题。当我盯着另一个端口（例如2005）的RMI注册服务器，改变了这些线路代码

LocateRegistry.createRegistry(2005); 

和

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

这成功地运行，没有错误，我的客户是能够连接。

我希望这个答案可以帮助其他人解决这个错误。让我知道是否有人需要更详细的信息。

Answer 2

您还没有再生存根与RMIC，或注册表不通过它的类路径访问它。