c++ 根据ip地址获取mac地址

要获取与IP地址关联的MAC地址，可以使用ARP（地址解析协议）命令。在命令提示符下，输入以下命令：

arp -a <ip地址>

例如，要查找IP地址为192.168.1.100的设备的MAC地址，可以输入：

arp -a 192.168.1.100

此命令将显示与该IP地址关联的MAC地址。如果该设备当前不在线，则不会显示MAC地址。

相关问题

windows c++ 根据ip地址获取mac地址

在Windows C语言中，可以使用Winsock API来获取本地计算机的IP地址和MAC地址。

以下是一个示例代码，它使用GetAdaptersAddresses函数来获取所有网络适配器的信息，包括IP地址和MAC地址：

#include <stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#include <iphlpapi.h>
#include <ws2tcpip.h>

#pragma comment(lib, "iphlpapi.lib")
#pragma comment(lib, "ws2_32.lib")

int main()
{
    // 初始化Winsock库
    WSADATA wsaData;
    int err = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (err != 0) {
        printf("WSAStartup failed with error: %d\n", err);
        return 1;
    }

    // 获取所有网络适配器的信息
    PIP_ADAPTER_ADDRESSES pAddresses = NULL;
    ULONG outBufLen = 0;
    ULONG flags = GAA_FLAG_INCLUDE_PREFIX | GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST | GAA_FLAG_SKIP_DNS_SERVER;
    DWORD ret = GetAdaptersAddresses(AF_UNSPEC, flags, NULL, NULL, &outBufLen);
    if (ret == ERROR_BUFFER_OVERFLOW) {
        pAddresses = (IP_ADAPTER_ADDRESSES*)malloc(outBufLen);
        ret = GetAdaptersAddresses(AF_UNSPEC, flags, NULL, pAddresses, &outBufLen);
    }

    // 遍历所有网络适配器
    if (ret == NO_ERROR) {
        PIP_ADAPTER_ADDRESSES pCurrAddresses = pAddresses;
        while (pCurrAddresses) {
            // 输出适配器名称
            printf("Adapter name: %ws\n", pCurrAddresses->FriendlyName);

            // 遍历IP地址列表
            PIP_ADAPTER_UNICAST_ADDRESS pUnicast = pCurrAddresses->FirstUnicastAddress;
            while (pUnicast) {
                // 输出IP地址和掩码
                char szIP[64], szMask[64];
                DWORD dwIP = pUnicast->Address.lpSockaddr->sa_family == AF_INET ? ((struct sockaddr_in*)pUnicast->Address.lpSockaddr)->sin_addr.S_un.S_addr : 0;
                DWORD dwMask = pUnicast->OnLinkPrefixLength;
                inet_ntop(AF_INET, &dwIP, szIP, sizeof(szIP));
                inet_ntop(AF_INET, &dwMask, szMask, sizeof(szMask));
                printf("IP address: %s/%s\n", szIP, szMask);

                // 获取MAC地址
                char szMAC[64];
                ULONG ulLen = sizeof(szMAC);
                if (SendARP(dwIP, 0, (PULONG)szMAC, &ulLen) == NO_ERROR) {
                    printf("MAC address: %02X-%02X-%02X-%02X-%02X-%02X\n", szMAC[0], szMAC[1], szMAC[2], szMAC[3], szMAC[4], szMAC[5]);
                }

                // 下一个IP地址
                pUnicast = pUnicast->Next;
            }

            // 下一个适配器
            pCurrAddresses = pCurrAddresses->Next;
        }
    }

    // 释放内存
    free(pAddresses);

    // 清理Winsock库
    WSACleanup();

    return 0;
}

该代码将遍历所有网络适配器，并输出它们的名称、IP地址和MAC地址。MAC地址的获取使用了SendARP函数。注意，该函数只能获取本地网络中的MAC地址，无法获取跨网络的MAC地址。

依托OCX控件获取网卡mac地址

在Windows平台上，获取网卡MAC地址可以通过使用WMI（Windows Management Instrumentation）或API函数来实现。其中，使用API函数要求较高，而使用WMI则相对简单。以下是使用WMI获取网卡MAC地址的示例代码（C++）：

#include <iostream>
#include <comdef.h>
#include <Wbemidl.h>

#pragma comment(lib, "wbemuuid.lib")

int main()
{
    HRESULT hres;

    // 初始化COM库
    hres = CoInitializeEx(0, COINIT_MULTITHREADED);
    if (FAILED(hres))
    {
        std::cerr << "Failed to initialize COM library" << std::endl;
        return 1;
    }

    // 设置安全级别
    hres = CoInitializeSecurity(
        NULL,
        -1,
        NULL,
        NULL,
        RPC_C_AUTHN_LEVEL_DEFAULT,
        RPC_C_IMP_LEVEL_IMPERSONATE,
        NULL,
        EOAC_NONE,
        NULL
    );
    if (FAILED(hres))
    {
        std::cerr << "Failed to initialize security" << std::endl;
        CoUninitialize();
        return 1;
    }

    // 获取WMI服务
    IWbemLocator* pLoc = NULL;
    hres = CoCreateInstance(
        CLSID_WbemLocator,
        0,
        CLSCTX_INPROC_SERVER,
        IID_IWbemLocator,
        (LPVOID*)&pLoc
    );
    if (FAILED(hres))
    {
        std::cerr << "Failed to create IWbemLocator object" << std::endl;
        CoUninitialize();
        return 1;
    }

    IWbemServices* pSvc = NULL;
    hres = pLoc->ConnectServer(
        _bstr_t(L"ROOT\\CIMV2"),
        NULL,
        NULL,
        0,
        NULL,
        0,
        0,
        &pSvc
    );
    if (FAILED(hres))
    {
        std::cerr << "Failed to connect to IWbemServices object" << std::endl;
        pLoc->Release();
        CoUninitialize();
        return 1;
    }

    // 设置WMI服务的安全级别
    hres = CoSetProxyBlanket(
        pSvc,
        RPC_C_AUTHN_WINNT,
        RPC_C_AUTHZ_NONE,
        NULL,
        RPC_C_AUTHN_LEVEL_CALL,
        RPC_C_IMP_LEVEL_IMPERSONATE,
        NULL,
        EOAC_NONE
    );
    if (FAILED(hres))
    {
        std::cerr << "Failed to set security on IWbemServices object" << std::endl;
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1;
    }

    // 查询网卡信息
    IEnumWbemClassObject* pEnumerator = NULL;
    hres = pSvc->ExecQuery(
        _bstr_t("WQL"),
        _bstr_t("SELECT * FROM Win32_NetworkAdapterConfiguration WHERE IPEnabled = 'TRUE'"),
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
        NULL,
        &pEnumerator
    );
    if (FAILED(hres))
    {
        std::cerr << "Failed to execute WQL query" << std::endl;
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1;
    }

    // 遍历查询结果
    ULONG uReturn = 0;
    while (pEnumerator)
    {
        IWbemClassObject* pclsObj = NULL;
        HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn);
        if (0 == uReturn)
        {
            break;
        }

        VARIANT vtProp;
        hr = pclsObj->Get(L"MACAddress", 0, &vtProp, 0, 0);
        if (SUCCEEDED(hr))
        {
            std::wcout << "MAC Address: " << vtProp.bstrVal << std::endl;
            VariantClear(&vtProp);
        }

        pclsObj->Release();
    }

    // 释放资源
    pEnumerator->Release();
    pSvc->Release();
    pLoc->Release();
    CoUninitialize();

    return 0;
}

其中，关键的查询语句为：

SELECT * FROM Win32_NetworkAdapterConfiguration WHERE IPEnabled = 'TRUE'

该语句查询所有已启用IP协议的网络适配器的配置信息，其中包括MAC地址。最终的结果通过遍历查询结果来获取。