Cobra-omniORB中间件复习

命名服务基本与Cobra-omniORB -IOR相似，下面具体对需要的操作步骤进行描述。

一、设置环境变量0）、在IOR实验中设置的环境变量不改变，还需要加入一个环境变量1）、在“D:\omniORB-4.1.1\”目录下新建目录Omninames；2）、设置用户环境变量“OMNINAMES_LOGDIR = D:\omniORB-4.1.1\Omninames”。

如果不设置这环境变量，在你做omniNames –start 时候出现错误：Error: cannot create initial log file 'C:\temp\omninames-CHINA-E499FC10A.log':No such file or directory执行完omniNames –start 在Omninames文件夹下面会出现两个文件。

二、配置命名服务双击执行D:/omniORB-4.1.1/sample.reg注册文件，开始－运行 regedit打开HKEY_LOCAL_MACHINE/SOFTWARE/omniORB/InitRef右击InitRef－新建－字符串值：加入类型为字符串键“１”，键值为"NameService=corbaname::"（这里的 是你的机器名）如果使用本机来测试，键值可以为NameService=corbaname::127.0.0.1。

这里的shane-120ef1cf3.是我的机器名。

三、使用Cobra-omniORB –IOR的工程文件testOrbServer工程文件，修改testOrbServer.cpp 代码:3．1 服务端程序如下：#include <iostream>//#include <omniORB4/CORBA.h>#include "Cobartest.h"using namespace std;class Cobartest_impl:public virtual POA_Cobartest{public :virtual double Div(double a, double b);};double Cobartest_impl::Div(double a, double b){double c=a/b;return c;}int main(int argc, char* argv[]){CORBA::ORB_var orb;Cobartest_impl* impl = NULL;try{orb = CORBA::ORB_init(argc,argv);CORBA::Object_var rootPOAObj = orb->resolve_initial_references("RootPOA");PortableServer::POA_var rootPOA =PortableServer::POA::_narrow(rootPOAObj.in());CORBA::PolicyList policies;policies.length(1);policies[0] = rootPOA->create_thread_policy(PortableServer::SINGLE_THREAD_MODEL);PortableServer::POAManager_var manager = rootPOA->the_POAManager();PortableServer::POA_var myPOA =rootPOA->create_POA("myPOA", manager, policies);CORBA::ULong len = policies.length();for (CORBA::ULong i = 0;i < len; i++)policies[i]->destroy();CORBA::Object_var rootContextObj =orb->resolve_initial_references("NameService");CosNaming::NamingContext_var nc =CosNaming::NamingContext::_narrow(rootContextObj.in());impl = new Cobartest_impl();PortableServer::ObjectId_var myObjID = myPOA->activate_object(impl);CORBA::Object_var o = myPOA->servant_to_reference(impl);_CORBA_String_var s = orb->object_to_string(o);cout << "The IOR of the object is: " << s.in() << endl;CosNaming::Name name;name.length(1);name[0].id = (const char *)"FirstTimeService";name[0].kind = (const char *)"";nc->rebind(name, o);manager->activate();orb->run();}catch (const CORBA::Exception&){cerr << "exception" << endl;return 1;}return 0;}3.2、VC向导工程设置图 Code Generation下选择“Run-time Library ”选择MultiThreaded DLL图增加预定义宏Preprocessor definitions：1）、__WIN32__,2）、__x86__,3）、_WIN32_WINNT=0x0400,4）、__NT__,5)、__OSVERSION__=4,输入的格式：__WIN32__,__x86__,_WIN32_WINNT=0x0400,__NT__,__OSVERSION__=4,加入路径: $(OMNI_ROOT)/include图增加工程依赖的库文件1、选择Link选项卡，Category选择Input，添加库模块：1）、ws2_32.lib 2）、mswsock.lib 3）、advapi32.lib4）、omniORB411_rt.lib 5）、omniDynamic411_rt.lib6）、omnithread33_rt.lib输入的格式：ws2_32.lib mswsock.lib advapi32.lib omniORB411_rt.lib omniDynamic411_rt.lib omnithread33_rt.lib (不是：omnithread32_rt.lib)2、设置库模块的路径：$(OMNI_ROOT)/lib/x86_win32；3、testOrbClient工程设置与testOrbServer一致。

四、使用Cobra-omniORB –IOR的工程文件testOrbClinet工程文件，修改testOrbClinet.cpp 代码:// testOrbClient.cpp : Defines the entry point for the console application.#include <iostream>#include "Cobartest.h"using namespace std;int main(int argc, char* argv[]){CORBA::ORB_var orb;try{if (argc != 2){throw 0;}orb = CORBA::ORB_init(argc, argv);CORBA::Object_var rootContextObj =orb->resolve_initial_references("NameService");if (CORBA::is_nil(rootContextObj)){cerr << "Nil Time Reference" << endl;throw 0;}CosNaming::NamingContext_var nc =CosNaming::NamingContext::_narrow(rootContextObj.in());CosNaming::Name name;name.length(1);name[0].id = (const char *)argv[1];name[0].kind = (const char *)"";//Invoke the root context to retrieve the object referenceCORBA::Object_var managerObj = nc->resolve(name);//Narrow the previous object to obtain the correct type::Cobartest_var manager = ::Cobartest::_narrow(managerObj.in());if (CORBA::is_nil(manager)){cerr << "Nil Time Reference" << endl;throw 0;}cout << "OK, Let's have a look: " << manager->Div(111,333) << endl;}catch (const CORBA::Exception&){cerr << "Exception" << endl;return 1;}return 0;}五、编译上述两个工程六、启动命名服务输入omniNames –start六、运行testOrbServer.exe服务端程序(可以直接在VC环境中运行)七、运行testOrbClient.exe客户端程序(不可以直接在VC环境中运行，缺少参数)。