C++ CHttpFile::SendRequestEx方法代码示例

void CHttpPostDlg::OnBtnSendpost() 
{
	CInternetSession m_InetSession(_T("session"),
		0,
		INTERNET_OPEN_TYPE_PRECONFIG,
		NULL,
		NULL,
		INTERNET_FLAG_DONT_CACHE);     //设置不缓冲
	CHttpConnection* pServer = NULL;
	CHttpFile* pFile = NULL;
	CString strHtml = "";
	CString ActionServer = _T("www.cqjg.gov.cn");
	CString strRequest = _T("LicenseTxt=AG8091&VIN=LJDAAA21560205432"); //POST过去的数据
	CString strHeaders = "Accept: text*/*\r\nContent-Type: application/x-www-form-urlencoded\r\nUser-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon;";
	int nRead = 0;
	try
	{
		INTERNET_PORT nPort = 80; //端口
		pServer = m_InetSession.GetHttpConnection(ActionServer, nPort);
		pFile = pServer->OpenRequest(CHttpConnection::HTTP_VERB_POST,"/netcar/FindOne.aspx");
		pFile->AddRequestHeaders(strHeaders);
		pFile->SendRequestEx(strRequest.GetLength());
		pFile->WriteString(strRequest); //重要-->m_Request 中有"name=aaa&name2=BBB&..."
		pFile->EndRequest();
		DWORD dwRet;
		pFile->QueryInfoStatusCode(dwRet);
		if (dwRet == HTTP_STATUS_OK)
		{
			CString strLine;
			while ((nRead = pFile->ReadString(strLine))>0)
			{
				strHtml += strLine + "\n";;
			}
		}

		int pos = strHtml.Find(_T("<li class=\"lithreeC\">"));
		if(pos != -1)
		{
			CString Value = strHtml.Mid(pos,500);
			CFile file("test.html",CFile::modeCreate|CFile::modeWrite);
			file.WriteHuge(Value.GetBuffer(0),Value.GetLength());
			file.Close();
			//MessageBox(Value);
		}
		delete pFile;
		delete pServer;
	}
	catch (CInternetException* e)
	{
		char strErrorBuf[255];
		e->GetErrorMessage(strErrorBuf,255,NULL);
		AfxMessageBox(strErrorBuf,MB_ICONINFORMATION);
	}
//	SendPost();
}

void CHttpClient::DoOpenURL( LPCTSTR lpszURL, DWORD dwHttpRequestFlags,
							CString &strHeader, CString &strPostData,
							CInternetSession *pSession,
							CHttpConnection **ppServer, CHttpFile **ppFile,
							PROGRESS_CALLBACK fnCallback, void * cookie )
{
	CString strServerName;
	CString strObject;
	INTERNET_PORT nPort;
	DWORD dwServiceType;
	
	int nVerb = (strPostData.GetLength()>0 ? CHttpConnection::HTTP_VERB_POST : CHttpConnection::HTTP_VERB_GET);

	if (!AfxParseURL(lpszURL, dwServiceType, strServerName, strObject, nPort) ||
		dwServiceType != INTERNET_SERVICE_HTTP)
	{
		ThrowTearException( ERR_TEAR_URLFORMAT );
	}

	if( fnCallback )
		fnCallback( PROG_HTTPCONNECTTING, 0, NULL, cookie );

	CHttpConnection *pServer = pSession->GetHttpConnection(strServerName, dwHttpRequestFlags, nPort, m_strProxyUser, m_strProxyPasswd );
	CHttpFile	* pFile = pServer->OpenRequest(nVerb, strObject, NULL, 1, NULL, NULL, dwHttpRequestFlags);
	pFile->AddRequestHeaders(strHeader, HTTP_ADDREQ_FLAG_COALESCE);
	if( strPostData.GetLength() > 0 ) // post
	{
		try
		{
			pFile->SendRequestEx( DWORD(strPostData.GetLength()) );
			pFile->WriteString(strPostData);
			pFile->EndRequest();
		}
		catch( CInternetException *pp )	// HTTP_STATUS_BAD_METHOD
		{
			pp->Delete();

			// close up the redirected site
			pFile->Close();
			delete pFile;
			pFile	=	NULL;
			pServer->Close();
			delete pServer;
			pServer	=	NULL;

			pServer = pSession->GetHttpConnection(strServerName, dwHttpRequestFlags, nPort, m_strProxyUser, m_strProxyPasswd );
			pFile = pServer->OpenRequest(nVerb, strObject, NULL, 1, NULL, NULL, dwHttpRequestFlags);
			pFile->AddRequestHeaders(strHeader, HTTP_ADDREQ_FLAG_COALESCE);
			pFile->SendRequestEx( DWORD(strPostData.GetLength()) );
			pFile->WriteString(strPostData);
			pFile->EndRequest();
		}
	}
	else
	{
		pFile->SendRequest();
	}

	if( fnCallback )
		fnCallback( PROG_REQUESTSENT, 0, NULL, cookie );

	// Bad Post method
	DWORD dwRet	=	0;
	pFile->QueryInfoStatusCode( dwRet );

	// if access was denied, prompt the user for the password
	if (dwRet == HTTP_STATUS_DENIED
		|| dwRet == HTTP_STATUS_PROXY_AUTH_REQ )
	{
		DWORD dwPrompt;
		dwPrompt = pFile->ErrorDlg(NULL, ERROR_INTERNET_INCORRECT_PASSWORD,
			FLAGS_ERROR_UI_FILTER_FOR_ERRORS | FLAGS_ERROR_UI_FLAGS_GENERATE_DATA
			| FLAGS_ERROR_UI_FLAGS_CHANGE_OPTIONS, NULL);

		// if the user cancelled the dialog, bail out
		if (dwPrompt != ERROR_INTERNET_FORCE_RETRY)
			ThrowTearException( ERR_TEAR_CANCEL );
		if( strPostData.GetLength() > 0 ) // post
		{
			try{
				pFile->SendRequestEx( DWORD(strPostData.GetLength()) );
				pFile->WriteString(strPostData);
				pFile->EndRequest();
			}
			catch( CInternetException *pp ) // HTTP_STATUS_BAD_METHOD
			{
				pp->Delete();

				pFile->SendRequestEx( DWORD(strPostData.GetLength()) );
				pFile->WriteString(strPostData);
				pFile->EndRequest();
			}
		}
		else
		{
			pFile->SendRequest();
		}
		pFile->QueryInfoStatusCode(dwRet);
	}

//.........这里部分代码省略.........