Question

如何用http的GET方式请求和接收API接口的数据

Answer 1

void CWeb::HttpContentByGet(CString strHttpName, CString & strResult)
{
    CInternetSession sess;
    CHttpFile* pHttpFile = NULL;
    CString strSentence;
    try
    {
        pHttpFile=(CHttpFile*)sess.OpenURL(strHttpName);
    }
    catch(...)
    {
        //throw;
    }    
     
    if(pHttpFile)
    {
        DWORD dwStatus;
        DWORD dwBuffLen = sizeof(dwStatus);
        BOOL bSuccess = pHttpFile->QueryInfo(HTTP_QUERY_STATUS_CODE|HTTP_QUERY_FLAG_NUMBER, &dwStatus, &dwBuffLen);
         
        if(bSuccess && dwStatus>=200 && dwStatus<300) // status codes:200-299 Success 
        { 
            while(pHttpFile->ReadString(strSentence))
            {
                strResult += strSentence;
            }
        }
        else
        {
            strResult = "ERROR";
        }
 
        pHttpFile->Close();
        delete pHttpFile;
    }
     
    sess.Close();
}