以编程方式确定是通过dhcp分配IP地址还是在java中手动设置
发布时间:2020-12-15 02:59:57 所属栏目:Java 来源:网络整理
导读:标题总结了它.有没有办法发现本地网络接口是否通过DHCP分配了它的地址,还是通过 java静态设置? 解决方法 因此,正如您仅请求Win NT’解决方案’,这是我的代码.它列出了具有当前配置值的网络接口. 注意EnableDHCP注册表键值,我认为这是重点. 正如我在你的问题
标题总结了它.有没有办法发现本地网络接口是否通过DHCP分配了它的地址,还是通过
java静态设置?
解决方法
因此,正如您仅请求Win NT’解决方案’,这是我的代码.它列出了具有当前配置值的网络接口.
注意EnableDHCP注册表键值,我认为这是重点. 正如我在你的问题评论中已经提到的,你需要至少简单的JNI包装器. 希望这可以帮助. 更多信息:http://support.microsoft.com/kb/314053 #include <windows.h> #define NETCARD_ROOT L"SOFTWAREMicrosoftWindows NTCurrentVersionNetworkCards" #define TCPIP_ROOT L"SYSTEMCurrentControlSetservicesTcpipParametersInterfaces" int _tmain(int argc,_TCHAR* argv[]) { //First enumerate all network adapters HKEY hNetCardsKey; LSTATUS lStatus = ERROR_SUCCESS; lStatus = RegOpenKey(HKEY_LOCAL_MACHINE,NETCARD_ROOT,&hNetCardsKey); if(ERROR_SUCCESS == lStatus) { DWORD dwCards = 0L; DWORD dwMaxSubkeyNameLen = 0L; lStatus = RegQueryInfoKey(hNetCardsKey,NULL,&dwCards,&dwMaxSubkeyNameLen,NULL); if(ERROR_SUCCESS == lStatus && dwCards) { for(DWORD i = 0; i < dwCards; i++) { TCHAR wszCurrentCardIdxName[MAX_PATH]; wszCurrentCardIdxName[0] = ' '; lStatus = RegEnumKey(hNetCardsKey,i,wszCurrentCardIdxName,MAX_PATH); if(ERROR_SUCCESS == lStatus) { TCHAR wszAdapterKeyName[MAX_PATH]; wszAdapterKeyName[0] = ' '; wsprintf(wszAdapterKeyName,L"%s%s",wszCurrentCardIdxName); HKEY hCardNameKey; lStatus = RegOpenKey( HKEY_LOCAL_MACHINE,wszAdapterKeyName,&hCardNameKey); if(ERROR_SUCCESS == lStatus) { TCHAR wszServiceNameGuid[MAX_PATH]; TCHAR wszAdapterName[MAX_PATH]; DWORD dwSize = sizeof(wszServiceNameGuid); wszServiceNameGuid[0] = ' '; RegQueryValueEx( hCardNameKey,L"ServiceName",(LPBYTE)wszServiceNameGuid,&dwSize); dwSize = sizeof(wszAdapterName); RegQueryValueEx( hCardNameKey,L"Description",(LPBYTE)wszAdapterName,&dwSize); OutputDebugStringW(wszServiceNameGuid); OutputDebugStringW(L"n"); RegCloseKey(hCardNameKey); //Get parameters TCHAR wszCardParamKey[MAX_PATH]; wszCardParamKey[0] = ' '; wsprintf(wszCardParamKey,TCPIP_ROOT,wszServiceNameGuid); HKEY hParamKey = NULL; lStatus = RegOpenKey( HKEY_LOCAL_MACHINE,wszCardParamKey,&hParamKey); if(ERROR_SUCCESS == lStatus) { DWORD dwEnabledDHCP = 0L; DWORD dwDWSize = sizeof(DWORD); TCHAR wszStaticIP[32]; TCHAR wszDHCPIP[32]; DWORD dwIPSize = sizeof(wszDHCPIP); ZeroMemory(wszDHCPIP,dwIPSize); ZeroMemory(wszStaticIP,dwIPSize); lStatus = RegQueryValueEx( hParamKey,L"EnableDHCP",(LPBYTE)&dwEnabledDHCP,&dwDWSize); if(SUCCEEDED(lStatus)) { wprintf_s(L"Adapter : %s [%s] ntDHCP : %sn",wszServiceNameGuid,wszAdapterName,dwEnabledDHCP ? L"Yes" : L"No"); } lStatus = RegQueryValueEx( hParamKey,L"IPAddress",(LPBYTE)&wszStaticIP,&dwIPSize); if(SUCCEEDED(lStatus)) { wprintf_s(L"tConfigured IP Address : %sn",wszStaticIP); } dwIPSize = sizeof(wszDHCPIP); lStatus = RegQueryValueEx( hParamKey,L"DhcpIPAddress",(LPBYTE)&wszDHCPIP,&dwIPSize); if(SUCCEEDED(lStatus)) { wprintf_s(L"tDHCP IP Address : %sn",wszDHCPIP); } wprintf_s(L"n"); RegCloseKey(hParamKey); } } } } } RegCloseKey(hNetCardsKey); } return 0; } 输出简单: Adapter : {6EC2554F-3359-43A2-AADB-57F427DC72FC} [Marvell Yukon 88E8072 PCI-E Gigabit Ethernet Controller] DHCP : No Configured IP Address : 192.168.5.10 DHCP IP Address : 192.168.1.102 Adapter : {2A28BDA8-ED1D-4E6E-8990-485EE1836828} [Sony Ericsson Device 0016 USB Ethernet Emulation (NDIS 5)] DHCP : Yes Configured IP Address : DHCP IP Address : 0.0.0.0 Adapter : {491DC095-155F-4572-B975-2E1703C17632} [Microsoft Windows Mobile Remote Adapter] DHCP : Yes Configured IP Address : DHCP IP Address : 169.254.2.2 Adapter : {5F987E64-E804-42DA-9453-8E479B6FC835} [Broadcom 802.11b/g Network adapter] DHCP : Yes Configured IP Address : DHCP IP Address : 192.168.1.14 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |