helloserver.java

北大Java 语言程序设计 ppt课件及源码

// The package containing our stubs.
import HelloApp.*;

// HelloServer will use the naming service.
import org.omg.CosNaming.*;

// The package containing special exceptions thrown by the name service.
import org.omg.CosNaming.NamingContextPackage.*;

// All CORBA applications need these classes.
import org.omg.CORBA.*;



public class HelloServer 
{
  public static void main(String args[])
  {
    try{
    
      // Create and initialize the ORB
      ORB orb = ORB.init(args, null);
      
      // Create the servant and register it with the ORB
      HelloServant helloRef = new HelloServant();
      orb.connect(helloRef);
      
      // Get the root naming context
      org.omg.CORBA.Object objRef = orb.resolve_initial_references("NameService");
      NamingContext ncRef = NamingContextHelper.narrow(objRef);
      
      // Bind the object reference in naming
      NameComponent nc = new NameComponent("Hello", "");
      NameComponent path[] = {nc};
      ncRef.rebind(path, helloRef);
      
      // Wait for invocations from clients
      java.lang.Object sync = new java.lang.Object();
      synchronized(sync){
        sync.wait();
      }
      
    } catch(Exception e) {
        System.err.println("ERROR: " + e);
        e.printStackTrace(System.out);
      }  
  }
}



class HelloServant extends _HelloImplBase
{
  public String sayHello()
  {
    return "\nHello world!!\n";
  
  }
}