MFC中调用web api

IXMLHTTPRequestPtr pIXMLHTTPRequest = NULL;

BSTR bstrString = NULL;

HRESULT hr;

?

try {

hr=pIXMLHTTPRequest.CreateInstance("Msxml2.XMLHTTP.6.0");

SUCCEEDED(hr) ? 0 : throw hr;

?

hr=pIXMLHTTPRequest->open("POST", "<web api URL>", false);

?

pIXMLHTTPRequest->setRequestHeader("Content-Type","application/json;charset=utf-8");

SUCCEEDED(hr) ? 0 : throw hr;

?

wchar_t keyToSend[256];

swprintf( keyToSend, L"{\"aa":\"%s\", \"Password\":\"%s\"}",<varible 1>, <varible 2>);

?

hr=pIXMLHTTPRequest->send(keyToSend);

SUCCEEDED(hr) ? 0 : throw hr;

?

bstrString=pIXMLHTTPRequest->responseText;

std::wstring result(bstrString);

?

if( result.compare(L"\"OK\"") == 0)

{

return 0;

}

else

{

????return 1;

}

???? ?

} catch (const std::exception& e) {

WriteLog( e.what());

if(bstrString)

::SysFreeString(bstrString);

???? return 2;

}

catch (const _com_error& e)

{

wchar_t errormessage[1024];

swprintf( errormessage, 500, L"%s", e.ErrorMessage() );

WriteLog( errormessage);

?

if(bstrString)

::SysFreeString(bstrString);

???? return 2;

???? ?

}

hr=pIXMLHTTPRequest.CreateInstance("Msxml2.XMLHTTP.6.0");