Java CORBA入门

2019-11-17 06:28:13

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Below is a simple example of a CORBA PRogram
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1. prodUCe a idl file like this
 hello.idl
 module HelloApp {
 interface Hello {
 string sayHello();
 };
 };

2. produce stub and skeleton files through idltojava.exe
 idltojava hello.idl
 idltojava is now named as idlj.exe and is included in the JDK.

3. write a server program like this 

// HelloServer.java

import HelloApp.*;

import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CORBA.*;

import java.io.*;
class HelloServant extends _HelloImplBase
{
 public String sayHello()
 {
 return "Hello world !!";
 }

}

public class HelloServer {

 public static void main(String args[])
 {
try{
 // create and initialize the ORB
 ORB orb = ORB.init(args, null);

 // create 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", "");

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