MFC之HTTP文件上传

BOOL UploadFile(LPCTSTR strURL, LPCTSTR strLocalFileName)
{
// 如果URL为空或者文件不存在，直接返回
	if (strURL == NULL ||
		strURL == _T("") ||
		strLocalFileName == NULL ||
		strLocalFileName == _T("") ||
		!PathFileExists(strLocalFileName) ||
		PathIsDirectory(strLocalFileName))
	{
		return FALSE;
	}

	CHttpFile *pHttpFile = NULL;
	CHttpConnection* connection = NULL;
	CInternetSession session(_T("UploadFile"));

	DWORD dwType;
	INTERNET_PORT nPort;
	CString strServer, strObject;
	if (!AfxParseURL(strURL, dwType, strServer, strObject, nPort)) return FALSE;

	BOOL bSuccess = FALSE;
	DWORD dwReadLength;
	DWORD dwResponseLength;
	DWORD dwTotalRequestLength;
	const DWORD dwChunkLength = 1024;

	char pBuffer[dwChunkLength];
	memset(pBuffer, 0, dwChunkLength);

	try
	{
		connection = session.GetHttpConnection(strServer, nPort);
		pHttpFile = connection->OpenRequest(CHttpConnection::HTTP_VERB_POST, strObject);

		CTime ct;
		CString strTime, strBoundary;
		ct = CTime::GetCurrentTime();
		strTime = ct.Format(_T("%Y%m%d%H%M%S"));
		strBoundary = _T("*-*-*") + strTime + _T("*-*-*");

		CString strPreFileHeaders;
		strPreFileHeaders.Format(_T("Content-Type: multipart/form-data; boundary=%s\r\n"), strBoundary);
		pHttpFile->AddRequestHeaders(strPreFileHeaders);

		CString strPostData;
		strPostData.Format(_T("--%s\r\nContent-Disposition: form-data; name =\"voice\"; filename=\"%s.wav\"\r\nContent-Type: audio/x-wav\r\n\r\n"), strBoundary, strTime);
		CString endPostData;
		endPostData.Format(_T("\r\n--%s--\r\n"), strBoundary);

		CFile file;
		file.Open(strLocalFileName, CFile::shareDenyNone | CFile::modeRead);

		DWORD sendLength = strPostData.GetLength() + endPostData.GetLength() + file.GetLength();
		pHttpFile->SendRequestEx(sendLength, HSR_SYNC | HSR_INITIATE);

		pHttpFile->Write((LPSTR)(LPCTSTR)strPostData, strPostData.GetLength());
		dwReadLength = -1;
		while (0 != dwReadLength)
		{
			dwReadLength = file.Read(pBuffer, dwChunkLength);
			if (dwReadLength > 0)
			{
				pHttpFile->Write(pBuffer, dwReadLength);
			}
		}
		file.Close();

		pHttpFile->Write((LPSTR)(LPCTSTR)endPostData, endPostData.GetLength());
		pHttpFile->EndRequest();

		DWORD dwStauts;
		if (!pHttpFile->QueryInfoStatusCode(dwStauts) ||
			dwStauts < 200 || 299 < dwStauts)
		{
			bSuccess = FALSE;
		}
		else
		{
			CString response, text;
			for (int i = 0; pHttpFile->ReadString(text); ++i)
			{
				response += text + "\r\n";
			}
			if (response.IsEmpty())
			{
				bSuccess = FALSE;
			}
			else
			{
				MPP::Json json = MPP::Json::Parse(response);
				bSuccess = json.Contains("state") && !json["state"].IsNull() &&
					json["state"].IsBool() && json["state"].AsBool();
			}
		}
	}
	catch (...)
	{
		bSuccess = FALSE;
	}

	if (pHttpFile != NULL)
	{
		pHttpFile->Close();
		delete pHttpFile;
		pHttpFile = NULL;
	}
	if (connection != NULL)
	{
		connection->Close();
		delete connection;
		connection = NULL;
	}
	session.Close();
	return bSuccess;
}