Corba 用IOR方式实现通信

源码地址:https://github.com/Foolegend/corbatest

1.创建一个idl接口文件(HelloServer.idl)如下

interface HelloServer{void sayHello(in string name);
};

利用idlj -fall HelloServer.idl进行编译,会得到下面几个文件

2.创建一个HelloServerImpl实现类,实现接口中定义的功能

package com.fod.service;public class HelloServerImpl extends HelloServerPOA{@Overridepublic void sayHello(String name) {System.out.println("Hello ," + name + ".");}
}

3.创建服务端corba启动类HelloTestService如下

package com.fod.service;import org.omg.CORBA.ORB;
import org.omg.CORBA.Policy;
import org.omg.PortableServer.IdAssignmentPolicyValue;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.POAHelper;
import org.omg.PortableServer.ThreadPolicyValue;import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.util.Properties;public class HelloTestService {public static void main(String[] args) {// 生成一个ORB，并初始化，这个和Server端一样Properties props = System.getProperties();//配置发布端口和ipprops.put("org.omg.CORBA.ORBInitialPort", "1050");props.put("org.omg.CORBA.ORBInitialHost", "192.168.0.106");System.out.println("ORB initialised\n");try {// Initialize the ORB.ORB orb = ORB.init(args, props);// get a reference to the root POAorg.omg.CORBA.Object obj = orb.resolve_initial_references("RootPOA");POA poaRoot = POAHelper.narrow(obj);// Create policies for our persistent POAPolicy[] policies = {// poaRoot.create_lifespan_policy(LifespanPolicyValue.PERSISTENT),poaRoot.create_id_assignment_policy(IdAssignmentPolicyValue.USER_ID),poaRoot.create_thread_policy(ThreadPolicyValue.ORB_CTRL_MODEL)};// Create myPOA with the right policiesPOA poa = poaRoot.create_POA("HelloServerPOA", poaRoot.the_POAManager(), policies);// Create the servantHelloServerImpl servant = new HelloServerImpl();// Activate the servant with the ID on myPOAbyte[] objectId = "AnyObjectID".getBytes();poa.activate_object_with_id(objectId, servant);// Activate the POA managerpoaRoot.the_POAManager().activate();// Get a reference to the servant and write it down.obj = poa.servant_to_reference(servant);PrintWriter ps = new PrintWriter(new FileOutputStream(new File("server.ior")));ps.println(orb.object_to_string(obj));ps.close();System.out.println("CORBA Server ready...");// Wait for incoming requestsorb.run();}catch(Exception ex) {ex.printStackTrace();}}
}

4.创建corba客户端操作类如下

package com.fod.service;import java.io.FileReader;
import java.io.LineNumberReader;
import java.util.Properties;class HelloClientImpl {private HelloServer target = null;private org.omg.CORBA.ORB orb = null;/*** Constructor for HelloClientImpl**/public HelloClientImpl() throws Exception {initORB(null);}/*** Constructor for HelloClientImpl* @see java.lang.Object#Object()*/public HelloClientImpl(String[] args) throws Exception {initORB(args);}/*** Initialize ORB.** @param args*/public void initORB(String[] args) throws Exception {//设置远程调用ip和端口Properties props = System.getProperties();props.put("org.omg.CORBA.ORBInitialPort", "1050");props.put("org.omg.CORBA.ORBInitialHost", "192.168.0.106");// Initialize the ORBorb = org.omg.CORBA.ORB.init((String[])args, props);// ---- Uncomment below to enable Naming Service access. ----
//        LineNumberReader input = new LineNumberReader(new FileReader("server.ior"));
//        String ior = input.readLine();
//此处的ior串是你环境上server.ior文件中的一串字符org.omg.CORBA.Object obj = orb.string_to_object("IOR:000000000000001449444c3a48656c6c6f5365727665723a312e3000000000010000000000000096000102000000000a3132372e302e312e3100b49100000048afabcb00000000206fe9875200000001000000000000000200000008526f6f74504f41000000000f48656c6c6f536572766572504f4100000000000b416e794f626a656374494414000000020000000100000020000000000001000100000002050100010001002000010109000000010001010000000026000000020002");target = HelloServerHelper.narrow(obj);}/*** Obtain ORB Interface.** @return*/public HelloServer getORBInterface() {return target;}/*** Shutdown ORB.*/public void shutdown() {orb.shutdown(true);}/*** Test driver for HelloClientImpl.* @param args*/public static void main(String[] args) {try {HelloClientImpl test = new HelloClientImpl();test.getORBInterface().sayHello("lifa");//停止test.shutdown();}catch(Exception ex) {ex.printStackTrace();}}
}

5.启动服务端,然后启动客户端,就会看到服务端控制台打印了Hello, lifa