upperserver.java.bak

用corba写的一个通信程序

//package chapter3;
import java.io.*;
import org.omg.CORBA.*;
import org.omg.CosNaming.*;
import org.omg.PortableServer.*;
import org.omg.PortableServer.POA;
import org.omg.CosNaming.NamingContextPackage.*;
import UpperModule.*;
public class UpperServer
{
  public static void main(String[] args)
  {
  	try
  	{
  		//初始化ORB
  		ORB orb=ORB.init(args,null);
  		//建立接口实现类UpperImpl对象，并与ORB连接。
  		UpperImpl upperImpl=new UpperImpl();
  		//取得RootPOA引用，并激活POAManager;
  		POA rootpoa=POAHelper.narrow(orb.resolve_initial_references("RootPOA"));
  		rootpoa.the_POAManager().activate();
  		//取得对象引用；
  		org.omg.CORBA.Object ref=rootpoa.servant_to_reference(upperImpl);
  		Upper href=UpperHelper.narrow(ref);
  		//取得命名上下文的根；
  		org.omg.CORBA.Object objRef=orb.resolve_initial_references("NameService");
  		//Use NamingContestExt which is part of the Interoperable
  		//Naming Service(INS)  specification
  		NamingContextExt ncRef=NamingContextExtHelper.narrow(objRef);
  		//绑定对象引用.
  		String name="Upper";
  		NamingComponent path[]=ncRef.to_name(name);
  		ncRef.rebind(path,href);
  		System.out.println("UpperServer ready...");
  		//等待客户调用。
  		orb.run();
  	}
  	catch(Exception e)
  	{
  		System.err.println("ERROR:"+e);
  		e.printStackTrace(System.out);
  	}
  	System.out.println("UpperServer Exiting...");
  }
}