Java CORBA入门

　2008-01-05 19:35:03　来源：WEB开发网　闂備線娼уΛ鎾箯閿燂拷

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核心提示：Below is a simple example of a CORBA PRogramdownload the source file 1. prodUCe a idl file like this hello.idl module HelloApp { interface He

Below is a simple example of a CORBA PRogram
download the source file

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", "");