MFC抓取网页代码简单版。

    CInternetSession session(NULL, 0);
    CHttpFile* htmlFile = NULL;

    CString strLine, strHtml;
    CString url = _T("http://www.tqyb.com.cn/data/gzWeather/gz_weatherForecastInDays.js?");
    TCHAR sRecv[1024];
    UINT CodePage = 65001;//CP_UTF8:65001 CP_ACP:0  
　　strHtml = _T("");
    //获取网页源码  
    htmlFile = (CHttpFile*)session.OpenURL(url);//重新打开连接  
    DWORD dwStatusCode;  //接受请求返回值
    htmlFile->QueryInfoStatusCode(dwStatusCode);
    if (dwStatusCode == HTTP_STATUS_OK)
    {
        while (htmlFile->ReadString(sRecv, 1024))
        {

            // 编码转换，可解决中文乱码问题  
            //gb2312转为unicode,则用CP_ACP  
            //gbk转为unicode,也用CP_ACP  
            //utf-8转为unicode,则用CP_UTF8  
            int nBufferSize = MultiByteToWideChar(CodePage, 0, (LPCSTR)sRecv, -1, NULL, 0);

            wchar_t *pBuffer = new wchar_t[nBufferSize + 1];
            memset(pBuffer, 0, (nBufferSize + 1)*sizeof(wchar_t));

            //gb2312转为unicode,则用CP_ACP  
            //gbk转为unicode,也用CP_ACP  
            //utf-8转为unicode,则用CP_UTF8  
            MultiByteToWideChar(CodePage, 0, (LPCSTR)sRecv, -1, pBuffer, nBufferSize*sizeof(wchar_t));

            strHtml += pBuffer;
            strHtml += "\r\n";
            delete pBuffer;
        }
    }
    
    htmlFile->Close();
    session.Close();
    delete htmlFile;