[Windows]_[初级]_[修改文件的创建时间-修改时间-访问时间]

场景:

1.  有时候软件需要从其他地方下载或传输文件到本地, 因为是新建的文件,所以创建时间是当前时间, 这时候就需要修改它的创建时间和修改时间保持一致.

2.  Windows的文件时间是可以修改的, 使用SetFileTime .但是要注意使用 TzSpecificLocalTimeToSystemTime 转换下时间, 不然因为时区会有误差.

TEST(test_file_attribute,GetAttribute)
{
	//1.获取文件时间
	//1.当然GetFileTime也可以.
	WIN32_FILE_ATTRIBUTE_DATA data;
	memset(&data,0,sizeof(WIN32_FILE_ATTRIBUTE_DATA));
	BOOL result = GetFileAttributesEx(
		L"../1.csv",
		GetFileExInfoStandard,
		&data);
	if(result)
	{
		FILETIME ct = data.ftCreationTime;
		FILETIME at = data.ftLastAccessTime;
		FILETIME wt = data.ftLastWriteTime;

		SYSTEMTIME stUTC, stLocal;
		if(wt.dwHighDateTime || wt.dwLowDateTime)
		{
			FileTimeToSystemTime(&wt, &stUTC);
			SystemTimeToTzSpecificLocalTime(NULL, &stUTC, &stLocal);

			// Build a string showing the date and time.
			TCHAR lpszString[MAX_PATH];
			DWORD dwRet = StringCchPrintf(lpszString, MAX_PATH, 
				TEXT("%02d/%02d/%d  %02d:%02d"),
				stLocal.wMonth, stLocal.wDay, stLocal.wYear,
				stLocal.wHour, stLocal.wMinute);
			std::wcout << L"Write Time: " << lpszString << std::endl;
		}

		if(at.dwHighDateTime || at.dwLowDateTime)
		{
			FileTimeToSystemTime(&at, &stUTC);
			SystemTimeToTzSpecificLocalTime(NULL, &stUTC, &stLocal);

			TCHAR lpszString[MAX_PATH];
			DWORD dwRet = StringCchPrintf(lpszString, MAX_PATH, 
				TEXT("%02d/%02d/%d  %02d:%02d"),
				stLocal.wMonth, stLocal.wDay, stLocal.wYear,
				stLocal.wHour, stLocal.wMinute);
			std::wcout << L"Access Time: " << lpszString << std::endl;
		}

		if(ct.dwHighDateTime || ct.dwLowDateTime)
		{
			FileTimeToSystemTime(&ct, &stUTC);
			SystemTimeToTzSpecificLocalTime(NULL, &stUTC, &stLocal);

			TCHAR lpszString[MAX_PATH];
			DWORD dwRet = StringCchPrintf(lpszString, MAX_PATH, 
				TEXT("%02d/%02d/%d  %02d:%02d"),
				stLocal.wMonth, stLocal.wDay, stLocal.wYear,
				stLocal.wHour, stLocal.wMinute);
			std::wcout << L"Create Time: " << lpszString << std::endl;
		}
	}

	//1. 修改文件时间.
	HANDLE file = CreateFile(L"../1.csv",
		GENERIC_READ | GENERIC_WRITE,
		0,
		NULL,
		OPEN_EXISTING,
		FILE_ATTRIBUTE_NORMAL,
		NULL);
	if(file != INVALID_HANDLE_VALUE)
	{
		FILETIME ft;
		SYSTEMTIME st,stUTC;
		BOOL f;
		//hour: 0-23
		GetSystemTime(&st);              // Gets the current system time
		st.wYear = 2013;
		TzSpecificLocalTimeToSystemTime(NULL,&st,&stUTC);
		SystemTimeToFileTime(&stUTC, &ft);  // Converts the current system time to file time format
		f = SetFileTime(file,           // Sets last-write time of the file 
			&ft,&ft,           // to the converted current system time 
			&ft);
		CloseHandle(file);
	}

修改后的文件时间: