前言：随着IT管理的不断成熟，IT资产管理方面逐渐被人们认识和加于应用，比如关注CUP使用率、内存使用率等，作为调配资源和购买新设备的依据；以前是手动查看，现在有HostMonitor等软件产品。如何编写适合自己或企业习惯的产品呢？当然最好是使用WMI（Windows Management Instrumentation ）。
本文介绍获取CPU和硬盘系列号的方法大部份源码均来源于网上和MSDN，在2000/XP/2003调试通过。
实现的原理都是采用WMI，故思路和框架相似；虽然只列出CPU和硬盘两种设备，但对其它设备亦适用。更多的参数信息（WQL和设备参数）等可查MSDN。
下述代码已经应用于个人开发的一个软件：针式背单词，可供参考：
a.简介：http://fjwuyongzhi.cnblogs.com/archive/2005/12/19/300126.html
b.下载1：http://www.cnblogs.com/Files/fjwuyongzhi/EnglishWord.rar
下载2：华军http://xz.newhua.com/down/englishword.rar
下面就具体的代码作一说明：
1、C#
public string CpuID
{//要引用“using System.Management;”
get
{
string strProcessorId;
ManagementObjectSearcher opSearch;
ManagementObjectCollection mocSystem;
strProcessorId="";
try
{
opSearch = new ManagementObjectSearcher("SELECT * FROM Win32_Processor");
mocSystem=opSearch.Get();//Win32_Processor：在MSDN查找
foreach( ManagementObject opInfo in mocSystem)
{//返回所有CPU的ID，分别返回可修改下述语句
strProcessorId+= opInfo["ProcessorId"].ToString().Trim() ;
//ProcessorId：在MSDN查找更多
}
}
catch
{
//TO DO：添加异常处理
}
return strProcessorId;
}
}
public string DiskDrive
{//硬盘厂商
get
{
string strDiskDrive;
ManagementObjectSearcher opSearch;
ManagementObjectCollection mocSystem;
strDiskDrive="";
try
{
opSearch = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
mocSystem=opSearch.Get();
foreach( ManagementObject opInfo in mocSystem)
{
strDiskDrive+= opInfo["PNPDeviceID"].ToString().Trim() ;
}
}
catch
{
//TO DO：添加异常处理
}
return strDiskDrive;
}
}
2、C++
代码框架，你所要做的仅是修改WQL语句，具体可看MSDN。以下代码为简介起见，一次返回所有的CPUID或硬盘厂商系列号。
#include "StdAfx.h"
#include ".\puiddisk.h"
#define _WIN32_DCOM
#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>
# pragma comment(lib, "wbemuuid.lib")
CpuIDDisk::CpuIDDisk(void)
{
GetInfomation();
}
CpuIDDisk::~CpuIDDisk(void)
{
}
int CpuIDDisk::GetInfomation(void)
{
HRESULT hres;
//步骤1：不是必须的，COM只须也只能初始化一次
hres = CoInitializeEx(0, COINIT_MULTITHREADED );
if (FAILED(hres))
{
return 1; //初始化COM异常：注意，COM只须也只能初始化一次
}
//步骤2：不是必须的，COM只须也只能设置一次
//Set general COM security levels
hres = CoInitializeSecurity(
NULL,
-1, // COM authentication
NULL, // Authentication services
NULL, // Reserved
RPC_C_AUTHN_LEVEL_DEFAULT, // Default authentication
RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation
NULL, // Authentication info
EOAC_NONE, // Additional capabilities
NULL // Reserved
);
if (FAILED(hres))
{
CoUninitialize();
return 1; // Program has failed.
}
//以上不是必须的，若已有“::COMInit();”，则要跳过
//步骤3： Obtain the initial locator to WMI
IWbemLocator *pLoc = NULL;
hres = CoCreateInstance(
CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator, (LPVOID *) &pLoc);
if (FAILED(hres))
{
CoUninitialize();
return 1;//Failed to create IWbemLocator object
}
//步骤4：Connect to WMI through the IWbemLocator::ConnectServer method
IWbemServices *pSvc = NULL;
hres = pLoc->ConnectServer(
_bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespace
NULL, // User name. NULL = current user
NULL, // User password. NULL = current
0, // Locale. NULL indicates current
NULL, // Security flags.
0, // Authority (e.g. Kerberos)
0, // Context object
&pSvc // pointer to IWbemServices proxy
);
if (FAILED(hres))
{
pLoc->Release();
CoUninitialize();
return 1; // Program has failed.
}
// 步骤5： Set security levels on the proxy
hres = CoSetProxyBlanket(
pSvc, // Indicates the proxy to set
RPC_C_AUTHN_WINNT, // RPC_C_AUTHN_xxx
RPC_C_AUTHZ_NONE, // RPC_C_AUTHZ_xxx
NULL, // Server principal name
RPC_C_AUTHN_LEVEL_CALL, // RPC_C_AUTHN_LEVEL_xxx
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
NULL, // client identity
EOAC_NONE // proxy capabilities
);
if (FAILED(hres))
{
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1;
}
// 步骤6：Use the IWbemServices pointer to make requests of WMI ----
IEnumWbemClassObject* pEnumerator = NULL;
//计算CPUID
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT * FROM Win32_Processor"),//Win32_OperatingSystem
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);
if (FAILED(hres))
{
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1;
}
// 步骤7：Get the data from the query
IWbemClassObject *pclsObj;
ULONG uReturn = 0;
while (pEnumerator)
{
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
&pclsObj, &uReturn);
if(0 == uReturn)
{
break;
}
VARIANT vtProp;
VariantInit(&vtProp);
hr = pclsObj->Get(L"ProcessorId", 0, &vtProp, 0, 0);
strProcessID=_com_util::ConvertBSTRToString(vtProp.bstrVal);//strProcessID：类级变量
}
//计算硬盘系列号
hres = pSvc->ExecQuery(
bstr_t("WQL"),
bstr_t("SELECT * FROM Win32_DiskDrive"),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&pEnumerator);
if (FAILED(hres))
{
pSvc->Release();
pLoc->Release();
CoUninitialize();
return 1;
}
while (pEnumerator)
{
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
&pclsObj, &uReturn);
if(0 == uReturn)
{
break;
}
VARIANT vtProp;
VariantInit(&vtProp);
hr = pclsObj->Get(L"PNPDeviceID", 0, &vtProp, 0, 0);
strDisk=_com_util::ConvertBSTRToString(vtProp.bstrVal);
}
pSvc->Release();
pLoc->Release();
pEnumerator->Release();
pclsObj->Release();
CoUninitialize();
return 0;
}
网址：
www.pinstudy.com“针式背单词”Web化产品：
英语单词查找-返回表格式结果
英语单词查询返回表格式结果，是英语单词学习、研究分析，很好的辅助系统
