org.omg.CORBA.Object objRef = orb.resolve_initial_references("NameService") 上的错误；

Posted 2023-02-16

【中文标题】org.omg.CORBA.Object objRef = orb.resolve_initial_references("NameService") 上的错误；

【英文标题】：Error on org.omg.CORBA.Object objRef = orb.resolve_initial_references("NameService");

【发布时间】：2015-11-02 18:04:16

【问题描述】：

我在运行简单的 CORBA 服务器时遇到了这个奇怪的错误（我按照本教程构建的 0

这是我的代码：

import org.omg.CORBA.ORB;
import org.omg.CORBA.ORBPackage.InvalidName;
import org.omg.CosNaming.NameComponent;
import org.omg.CosNaming.NamingContextExt;
import org.omg.CosNaming.NamingContextExtHelper;
import org.omg.CosNaming.NamingContextPackage.CannotProceed;
import org.omg.CosNaming.NamingContextPackage.NotFound;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.POAHelper;
import org.omg.PortableServer.POAManagerPackage.AdapterInactive;
import org.omg.PortableServer.POAPackage.ServantNotActive;
import org.omg.PortableServer.POAPackage.WrongPolicy;

import HotelServer.Hotel;
import HotelServer.HotelHelper;
import HotelServer.HotelImpl;


public class StartServers 

    public static void main(String[] args) throws AdapterInactive, InvalidName, ServantNotActive, WrongPolicy, NotFound, CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName 
          // create and initialize the ORB //// get reference to rootpoa & activate the POAManager
        ORB orb = ORB.init(args, null);
        POA rootpoa = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));
        rootpoa.the_POAManager().activate();

        HotelImpl hotel = new HotelImpl();
        hotel.setOrb(orb);

        // get object reference from the servant
        org.omg.CORBA.Object ref = rootpoa.servant_to_reference(hotel);
        Hotel hotelref = HotelHelper.narrow(ref);

        org.omg.CORBA.Object objRef =  orb.resolve_initial_references("NameService");
        NamingContextExt ncRef = NamingContextExtHelper.narrow(objRef);

        NameComponent path[] = ncRef.to_name( "hotel1" );
        ncRef.rebind(path, hotelref);

        orb.run();

        System.out.println("ORB Server is running...");
    

错误发生在这一行：org.omg.CORBA.Object objRef = orb.resolve_initial_references("NameService");

这是完整的错误：

com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl <init>
WARNING: "IOP00410201: (COMM_FAILURE) Connection failure: socketType: IIOP_CLEAR_TEXT; hostname: localhost; port: 1050"
org.omg.CORBA.COMM_FAILURE:   vmcid: SUN  minor code: 201  completed: No
    at com.sun.corba.se.impl.logging.ORBUtilSystemException.connectFailure(Unknown Source)
    at com.sun.corba.se.impl.logging.ORBUtilSystemException.connectFailure(Unknown Source)
    at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.<init>(Unknown Source)
    at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.<init>(Unknown Source)
    at com.sun.corba.se.impl.transport.SocketOrChannelContactInfoImpl.createConnection(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaClientRequestDispatcherImpl.beginRequest(Unknown Source)
    at com.sun.corba.se.impl.protocol.CorbaClientDelegateImpl.request(Unknown Source)
    at com.sun.corba.se.impl.resolver.BootstrapResolverImpl.invoke(Unknown Source)
    at com.sun.corba.se.impl.resolver.BootstrapResolverImpl.resolve(Unknown Source)
    at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source)
    at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source)
    at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(Unknown Source)
    at com.sun.corba.se.impl.orb.ORBImpl.resolve_initial_references(Unknown Source)
    at StartServers.main(StartServers.java:34)
Caused by: java.net.ConnectException: Connection refused: connect
    at sun.nio.ch.Net.connect0(Native Method)
    at sun.nio.ch.Net.connect(Unknown Source)
    at sun.nio.ch.Net.connect(Unknown Source)
    at sun.nio.ch.SocketChannelImpl.connect(Unknown Source)
    at java.nio.channels.SocketChannel.open(Unknown Source)
    at com.sun.corba.se.impl.transport.DefaultSocketFactoryImpl.createSocket(Unknown Source)
    ... 12 more

【参考方案1】：

User Reimus 不久前发布了一个答案，我报告说它不起作用。原来它正在闪烁一个超级快速的错误消息，表明该端口正在使用中。当我解决这个问题时，他最初的解决方案奏效了。 Reimus，请重新发布您的答案，以便我接受。在那之前，这是他的原始答案：

运行

start tnameserv -ORBInitialPort 1051

确保端口1051 尚未用于其他用途。你应该看到