【MFC】Base64图片解码后，转存成文件

void CTestFaceServerSdkDlg::OnEventCEnrollUserFaceserversdkctrl1( 
	LPCTSTR strDevSn ,					//终端序列号 m_devSn
	long lOpCode ,						//操作标识 OP_SUCC=0 成功 OP_FAIL=1 失败
	long lUserData ,					//用户传进来的自定义数据
	long lExtendParam ,					//扩展参数
	long lUserId ,						//用户编号
	LPCTSTR strCardNo ,					//卡号
	long lFeatureLen ,					//特征码原始长度
	LPCTSTR strBase64FeatureData ,		//经过BASE64编码的特征数据
	long lPhotoType ,					//照片类型保留
	long lPhotoLen ,					//照片原始数据长度
	LPCTSTR strBase64PhotoData			//经过BASE64编码的照片数据
	)
{
	// TODO:  在此处添加消息处理程序代码
	if(lPhotoLen > 0)
	{
		MessageBox( _T( "人脸登记成功" ) );
		int nBase64PhotoLen = wcslen( strBase64PhotoData );
		if(nBase64PhotoLen > 1024)
		{
			char szBuffer[ BUF_LEN ] = { 0 };
			char* pDst = szBuffer;

			CBase64 * cBase64 = new CBase64;
			int nDstLen = cBase64->DecodeBase64( (const char*)( CW2A( strBase64PhotoData ) ) , (unsigned char*)pDst , nBase64PhotoLen );

			CString strSuffix;
			strSuffix.Format( _T( "%d" ) , lUserId );

			CString strFileName;
			SYSTEMTIME sys;
			GetLocalTime( &sys );
			strFileName.Format( _T( ".\\PHOTO_%s_%04d%02d%02d%02d%02d%02d%03d_%s.jpg" ) , _T( "GetUserInfo" ) , sys.wYear , sys.wMonth , sys.wDay , sys.wHour , sys.wMinute , sys.wSecond , sys.wMilliseconds , strSuffix );

			CFile file;
			CFileException ex;
			if(file.Open( strFileName , CFile::modeWrite | CFile::shareExclusive | CFile::modeCreate , &ex ))
			{
				file.Write( szBuffer , nDstLen );
				file.Flush();
				file.Close();
			}
		}
	}
}

void CTestFaceServerSdkDlg::OnEventCEnrollUserFaceserversdkctrl1(

LPCTSTR strDevSn , //终端序列号 m_devSn

long lOpCode , //操作标识 OP_SUCC=0 成功 OP_FAIL=1 失败

long lUserData , //用户传进来的自定义数据

long lExtendParam , //扩展参数

long lUserId , //用户编号

LPCTSTR strCardNo , //卡号

long lFeatureLen , //特征码原始长度

LPCTSTR strBase64FeatureData , //经过BASE64编码的特征数据

long lPhotoType , //照片类型保留

long lPhotoLen , //照片原始数据长度

LPCTSTR strBase64PhotoData //经过BASE64编码的照片数据

)

{

// TODO: 在此处添加消息处理程序代码

if(lPhotoLen > 0)

{

MessageBox( _T( "人脸登记成功" ) );

int nBase64PhotoLen = wcslen( strBase64PhotoData );

if(nBase64PhotoLen > 1024)

{

char szBuffer[ BUF_LEN ] = { 0 };

char* pDst = szBuffer;

CBase64 * cBase64 = new CBase64;

int nDstLen = cBase64->DecodeBase64( (const char*)( CW2A( strBase64PhotoData ) ) , (unsigned char*)pDst , nBase64PhotoLen );

CString strSuffix;

strSuffix.Format( _T( "%d" ) , lUserId );

CString strFileName;

SYSTEMTIME sys;

GetLocalTime( &sys );

strFileName.Format( _T( ".\\PHOTO_%s_%04d%02d%02d%02d%02d%02d%03d_%s.jpg" ) , _T( "GetUserInfo" ) , sys.wYear , sys.wMonth , sys.wDay , sys.wHour , sys.wMinute , sys.wSecond , sys.wMilliseconds , strSuffix );

CFile file;

CFileException ex;

if(file.Open( strFileName , CFile::modeWrite | CFile::shareExclusive | CFile::modeCreate , &ex ))

{

file.Write( szBuffer , nDstLen );

file.Flush();

file.Close();

}

先暂存一下…

从图片获取数据显示在界面上：

	//文件读取方法：
	int cx , cy;
	CImage  image;
	CRect   rect;
	//根据路径载入图片  
	image.Load( strFileName );

	//获取图片的宽 高度  
	cx = image.GetWidth();
	cy = image.GetHeight();

	//获取Picture Control控件的大小  
	GetDlgItem( IDC_STATIC_PIC )->GetWindowRect( &rect );

	//将客户区选中到控件表示的矩形区域内  
	ScreenToClient( &rect );

	//窗口移动到控件表示的区域  
	GetDlgItem( IDC_STATIC_PIC )->MoveWindow( rect.left , rect.top , cx , cy , TRUE );

	CWnd *pWnd = NULL;
	pWnd = GetDlgItem( IDC_STATIC_PIC );//获取控件句柄  
	pWnd->GetClientRect( &rect );//获取句柄指向控件区域的大小

	CDC *pDc = NULL;
	pDc = pWnd->GetDC();//获取picture的DC

	image.Draw( pDc->m_hDC , rect );//将图片绘制到picture表示的区域内

	ReleaseDC( pDc );

//文件读取方法：

int cx , cy;

CImage image;

CRect rect;

//根据路径载入图片

image.Load( strFileName );

//获取图片的宽高度

cx = image.GetWidth();

cy = image.GetHeight();

//获取Picture Control控件的大小

GetDlgItem( IDC_STATIC_PIC )->GetWindowRect( &rect );

//将客户区选中到控件表示的矩形区域内

ScreenToClient( &rect );

//窗口移动到控件表示的区域

GetDlgItem( IDC_STATIC_PIC )->MoveWindow( rect.left , rect.top , cx , cy , TRUE );

CWnd *pWnd = NULL;

pWnd = GetDlgItem( IDC_STATIC_PIC );//获取控件句柄

pWnd->GetClientRect( &rect );//获取句柄指向控件区域的大小

CDC *pDc = NULL;

pDc = pWnd->GetDC();//获取picture的DC

image.Draw( pDc->m_hDC , rect );//将图片绘制到picture表示的区域内

ReleaseDC( pDc );

Base64数据流直接显示到界面上：

	//数据显示方法：
	//分配内存，准备读入图片文件的数据
	//GlobalAlloc从堆分配指定字节的内存区域
	HGLOBAL hGlobal = GlobalAlloc( GMEM_FIXED , BUF_LEN );
	memcpy_s( hGlobal , BUF_LEN , szBuffer , BUF_LEN );

	//从创建IStream接口指针
	CComPtr<IStream> spStream;
	CreateStreamOnHGlobal( hGlobal , TRUE , &spStream );
			
	IPicture *pPicture;
	OleLoadPicture( spStream , BUF_LEN , TRUE , IID_IPicture , (void**)&pPicture );
			
	CWnd *pWnd = NULL;
	pWnd = GetDlgItem( IDC_STATIC_PIC );//获取控件句柄


	CDC *pDc = NULL;
	pDc = pWnd->GetDC();//获取picture的DC

	CRect rect;
	pWnd->GetClientRect( &rect );//获取句柄指向控件区域的大小
	LONG width = rect.right - rect.left - 1;
	LONG height = rect.bottom - rect.top - 2;

	LONG cx , cy;
	pPicture->get_Width( &cx );
	pPicture->get_Height( &cy );

	pPicture->Render( pDc->m_hDC , 0 , 1 , width , height , 0 , cy , cx , -cy , NULL );
			
	pPicture->Release();
	spStream.Release();

//数据显示方法：

//分配内存，准备读入图片文件的数据

//GlobalAlloc从堆分配指定字节的内存区域

HGLOBAL hGlobal = GlobalAlloc( GMEM_FIXED , BUF_LEN );

memcpy_s( hGlobal , BUF_LEN , szBuffer , BUF_LEN );

//从创建IStream接口指针

CComPtr<IStream> spStream;

CreateStreamOnHGlobal( hGlobal , TRUE , &spStream );

IPicture *pPicture;

OleLoadPicture( spStream , BUF_LEN , TRUE , IID_IPicture , (void**)&pPicture );

CWnd *pWnd = NULL;

pWnd = GetDlgItem( IDC_STATIC_PIC );//获取控件句柄

CDC *pDc = NULL;

pDc = pWnd->GetDC();//获取picture的DC

CRect rect;

pWnd->GetClientRect( &rect );//获取句柄指向控件区域的大小

LONG width = rect.right - rect.left - 1;

LONG height = rect.bottom - rect.top - 2;

LONG cx , cy;

pPicture->get_Width( &cx );

pPicture->get_Height( &cy );

pPicture->Render( pDc->m_hDC , 0 , 1 , width , height , 0 , cy , cx , -cy , NULL );

pPicture->Release();

spStream.Release();

…

【MFC】Base64图片解码后，转存成文件

Tagged on: Code MFC