求解答。

某DLL模块包含三个文件SimpleTemplate.h、Mgr.h、Mgr.cpp

[b]SimpleTemplate.h[/b]
#ifndef __SimpleTemplate_H_
//!定义一个模板类
template <class T>
class CTemplateTest
{
public:
    static int i; //在别的模块中查看其地址与本模块内看到的地址不同，为何？？？？？};

//!初始化静态数据成员
template <class T>
int CTemplateTest<T>::i = 0;
#endif


[b]Mgr.h[/b]
#ifndef _Mgr_H_
#include "SimpleTemplate.h"

#ifdef _Template_SimpleTemplate_Exports
#define Dll_API __declspec(dllexport)
#else
#define Dll_API __declspec(dllimport)
#endif

//!将模板类特化
typedef     CTemplateTest<int> CHDBClient;

class  Dll_API CHDBClientMgr
{
    private:
        CHDBClientMgr();
        ~CHDBClientMgr();

    public:
        static CHDBClient* Instance(); 
        void  Release();
        static void set(int i);
        static int get();
        //!    

    private:
        static CHDBClient* _instance;
        
};

#endif




[b]Mgr.cpp[/b]

#include "Mgr.h"
#include <iostream>

using namespace std;

CHDBClient* CHDBClientMgr::_instance = NULL;

CHDBClientMgr::CHDBClientMgr()
{    
}

CHDBClientMgr::~CHDBClientMgr()
{
}

CHDBClient* CHDBClientMgr::Instance()
{
    if (0 == _instance)
    {
        _instance = new CHDBClient();
    }

    cout<<"CHDBClientMgr::Instance:  值  CHDBClient::i  "<<CHDBClient::i<<endl;
    cout<<"CHDBClientMgr::Instance:  地址  &CHDBClient::i  "<<&CHDBClient::i<<endl;


    cout<<"CHDBClientMgr::Instance:  值  _instance->i:  "<<_instance->i<<endl;    
    cout<<"CHDBClientMgr::Instance:  地址 &_instance->i: "<<&_instance->i<<endl;
    
    return _instance;
}

void  CHDBClientMgr::Release()
{
    if (_instance)
    {
        delete _instance;
        _instance  = NULL;
    }
 }

void CHDBClientMgr::set(int i)
{    
    _instance->i = i;
    cout<<"set地址1 "<<&_instance->i<<endl;
    cout<<"set地址2 "<<&CHDBClient::i<<endl;
}

int CHDBClientMgr::get()
{    
    cout<<"get地址 &CHDBClient::i "<<&CHDBClient::i<<endl;
    cout<<"get值  CHDBClient::i "<<CHDBClient::i<<endl;
    cout<<"get地址 "<<&_instance->i<<endl;
    cout<<"get值 "<<_instance->i<<endl;
    return  _instance->i;
}



[b]exe程序输出静态成员变量的地址，居然不唯一，难道静态成员变量被重定义了？？？？？[/b]
#include <iostream>
#include"Mgr.h"

using namespace std;


int  main( int argc,char** argv )
{    
cout<<"单件类使用了模板类型的静态变量,存在问题"<<endl;
 
    //!被调用模块内
    CHDBClientMgr::set(1);    
    cout<<"CHDBClientMgr::set(1)"<<endl;
    CHDBClient* pHdbClient = CHDBClientMgr::Instance();
    cout<<"main: CHDBClientMgr::get() "<<endl;
    cout<<CHDBClientMgr::get()<<endl;
    cout<<endl;

    //!本地模块内    
    cout<<"main: CHDBClient::i  "<<CHDBClient::i<<endl;
    cout<<"main: &CHDBClient::i  "<<&CHDBClient::i<<endl;
    cout<<"main: pHdbClient->i:  "<<pHdbClient->i<<endl;
    cout<<"main: &pHdbClient->i  "<<&(pHdbClient->i)<<endl;
    cout<<"main: CHDBClientMgr::get() "<<endl;
    cout<<CHDBClientMgr::get()<<endl;
    cout<<endl;

    //!本地模块内
    CHDBClientMgr::set(2);
    cout<<"CHDBClientMgr::set(2)"<<endl;    
    cout<<"main: CHDBClient::i  "<<CHDBClient::i<<endl;
    cout<<"main: &CHDBClient::i  "<<&CHDBClient::i<<endl;
    cout<<"main: pHdbClient->i:  "<<pHdbClient->i<<endl;
    cout<<"main: &pHdbClient->i  "<<&(pHdbClient->i)<<endl;
    cout<<"main: CHDBClientMgr::get() "<<endl;
    cout<<CHDBClientMgr::get()<<endl;
    cout<<endl;

    //!被调用模块内
    CHDBClientMgr::Instance();
    cout<<"main: CHDBClientMgr::get() "<<endl;
    cout<<CHDBClientMgr::get()<<endl;    
    
    system("pause");
    return 0;

}