java corba 连接华为T2000北向接口的问题，小弟叩谢！

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java corba 连接华为T2000北向接口的问题，小弟叩谢！3

本机安装了华为T2000网管软件，并开启了NameService服务，NotifyService服务；
运行下面的程序:初始化ORB，获取名字服务NameService都没问题，而通过名字服务获取EmsSessionFactory_I出现问题，不报错，却是空

//EMSSessionFactory 
	  NameComponent nc = new NameComponent("Huawei/T2000", "EmsSessionFactory_I"); 
	  NameComponent path[] = {nc}; 
	  
	  EmsSessionFactory_I emsSessionFactory_I = null;
	  org.omg.CORBA.Object obj = null;
	  try{
		  obj = namingContext.resolve(path);
		  System.out.println(obj);
		  emsSessionFactory_I = EmsSessionFactory_IHelper.narrow(obj);
		  System.out.println(emsSessionFactory_I);
	  }catch(Exception e){
		  e.printStackTrace();
	  }

问题1：是不是我的代码有问题，获取EmsSessionFactory_I不是这样写；
问题2：是不是网管服务开启不完全，现在接口服务有NameService，和NotifyService，有的说缺少北向接口模块服务，可我配置里没有北向接口服务，如果有怎么启动；高手如云，忘有知道的兄弟们，麻烦您指点迷津，小弟先谢谢了！

package corba_inf;

import org.omg.CORBA.ORB;
import org.omg.CORBA.SystemException;

import CosNaming.NameComponent;
import CosNaming.NamingContext;
import CosNaming.NamingContextHelper;
import emsMgr.EMSMgr_I;
import emsSession.EmsSession_I;
import emsSession.EmsSession_IHolder;
import emsSessionFactory.EmsSessionFactory_I;
import emsSessionFactory.EmsSessionFactory_IHelper;

public class Client_Start {
	 static ORB orb;  
	 static EMSMgr_I emsMgr = null;  
	 static EmsSession_I emsSession=null;  
	 
	 public static void testTai(){  
	  //建立连接登录、建立消息通道 
	  try { 
		   String[] args = new String[2];
		   args[0] = "-ORBInitRef";
		   args[1] = "NameService=corbaloc::192.168.7.252:12001/NameService";

		   orb = org.omg.CORBA.ORB.init(args, null); 
		   
		  } catch (SystemException ex) {  
			  System.out.println("初始化ORB对象异常！"); 
		  }  

	  //NameService
	  NamingContext namingContext = null; 
	  org.omg.CORBA.Object objRef = null;
	  try { 
		   objRef = orb.resolve_initial_references("NameService");
		   namingContext = NamingContextHelper.narrow(objRef);
		   System.out.println("成功获取取名字服务!---"+namingContext);
	  }catch (org.omg.CORBA.ORBPackage.InvalidName ex) { 
		   System.out.println("取名字服务索引异常!");
		   ex.printStackTrace();
	  } 

	  //EMSSessionFactory 
	  NameComponent nc = new NameComponent("Huawei/T2000", "EmsSessionFactory_I"); 
	  NameComponent path[] = {nc}; 
	  
	  EmsSessionFactory_I emsSessionFactory_I = null;
	  org.omg.CORBA.Object obj = null;
	  try{
		  obj = namingContext.resolve(path);
		  System.out.println(obj);
		  emsSessionFactory_I = EmsSessionFactory_IHelper.narrow(obj);
		  System.out.println(emsSessionFactory_I);
	  }catch(Exception e){
		  e.printStackTrace();
	  }

	  EmsSession_IHolder sessionHolder = new EmsSession_IHolder();
//	  try {
//		   
//		  NmsSession_I nmsSession = null; 
//		   //用户名，密码
//		  emsSessionFactory_I.getEmsSession("jiankong","jiankong123", nmsSession, sessionHolder);
//		  System.out.println("NMSsession ---" + nmsSession.toString());
//	  }catch (globaldefs.ProcessingFailureException ex) {  
//		   System.out.println("获取EmsSession引用对象，异常！---ProcessingFailureException---"); 
//		   System.out.println("可能是用户名或者密码错误，或者权限不够，或者已登陆的用户还未退出！"); 
//		   System.out.println(ex.toString()); 
//	  }  
//	  emsSession = sessionHolder.value; 
//	  
//	  Common_IHolder common_IHolder = new Common_IHolder();
//	  try {
//		  emsSession.getManager("emsMgr", common_IHolder);
//		  emsMgr = EMSMgr_IHelper.narrow(common_IHolder.value);
//	  } catch (ProcessingFailureException e) {
//			e.printStackTrace();
//	  } 
	 }
	
	public static void main(String[] args){
		testTai();
//		Thread corba = new Thread(new Client(),"corba");
//		corba.start();
	}
}

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