使用WinInet实现HTTP站点访问

废话不多说了，直接上代码

HTTP的GET方式代码##

void sendGetRequest(LPCTSTR lpszURL)
{
	LPCTSTR lpszAgent = _T("WininetGet/0.1");

	HINTERNET hInternet = NULL;
	HINTERNET hConnect = NULL;
	HINTERNET hRequest = NULL;
	do 
	{
		CString strServer, strObject;
		DWORD dwServerType;
		INTERNET_PORT nPort;
		if (!AfxParseURL(lpszURL, dwServerType, strServer, strObject, nPort))
		{
			break;
		}
		hInternet = InternetOpen(lpszAgent, INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
		if (NULL==hInternet)
		{
			break;
		}

		LPCTSTR lpszUserName = NULL;
		LPCTSTR lpszPassword = NULL;
		DWORD dwConnectFlags = 0, dwConnectContext = 0;
		hConnect = InternetConnect(hInternet, strServer, nPort,
			lpszUserName, lpszPassword,
			INTERNET_SERVICE_HTTP,
			dwConnectFlags, dwConnectContext);
		if (NULL==hConnect)
		{
			break;
		}

		LPCTSTR lpszVerb = _T("GET");
		LPCTSTR lpszVersion = NULL;
		LPCTSTR lpszReferrer = NULL;
		LPCTSTR *lplpszAcceptTypes = NULL;	// 允许接受所有类型
		DWORD dwOpenRequestFlags = INTERNET_FLAG_IGNORE_REDIRECT_TO_HTTP |
			INTERNET_FLAG_KEEP_CONNECTION |
			INTERNET_FLAG_NO_AUTH |
			INTERNET_FLAG_NO_COOKIES |
			INTERNET_FLAG_NO_UI |
			INTERNET_FLAG_IGNORE_CERT_CN_INVALID |
			INTERNET_FLAG_RELOAD;
		DWORD dwOpenRequestContext = 0;
		hRequest = HttpOpenRequest(hConnect, lpszVerb, strObject, lpszVersion,
			lpszReferrer, lplpszAcceptTypes,
			dwOpenRequestFlags, dwOpenRequestContext);
		if (NULL==hRequest)
		{
			break;
		}
		
		BOOL bResult = HttpSendRequest(hRequest, NULL, 0, NULL, 0);
		if (!bResult)
		{
			break;
		}

		// 获取 HTTP应答头部信息
		TCHAR szBuff[TRANSFER_SIZE];
		DWORD dwReadSize = TRANSFER_SIZE;
		bResult = HttpQueryInfo(hRequest, HTTP_QUERY_RAW_HEADERS, szBuff, &dwReadSize, NULL);
		if (!bResult)
		{
			break;
		}
		szBuff[dwReadSize] = _T('');
		// 获取 HTTP应答包体信息
		DWORD dwByteAvailable = 0;
		bResult = InternetQueryDataAvailable(hRequest, &dwByteAvailable, 0, 0);
		if (!bResult)
		{
			break;
		}
		char szBody[TRANSFER_SIZE];
		DWORD dwBytesRead = 0;
		bResult = InternetReadFile(hRequest, szBody, dwByteAvailable, &dwBytesRead);
		if (!bResult)
		{
			break;
		}
		szBody[dwBytesRead] = '';
		TRACE(szBuff);
	} while (false);
	if (NULL != hRequest)
	{
		InternetCloseHandle(hRequest);
	}
	if (NULL!=hConnect)
	{
		InternetCloseHandle(hConnect);
	}
	if (NULL != hInternet)
	{
		InternetCloseHandle(hInternet);
	}
}