CInternetSessiony应用示例

1. CInternetSession的简单使用

 CInternetSession session;
 CHttpFile *file = NULL;
 CString strURL = " http://www.google.com";
 CString strHtml = "”;   //存放网页数据

 try{
        file = (CHttpFile*)session.OpenURL(strURL);
 }catch(CInternetException * m_pException){
        file = NULL;
        m_pException->m_dwError;
        m_pException->Delete();
        session.Close();
        MessageBox("CInternetException");
 }
 CString strLine;
 if(file != NULL){
        while(file->ReadString(strLine) != NULL){
        strHtml += strLine;
        }
 }else{
        MessageBox("fail");
 }
 session.Close();
 file->Close();
 delete file;
 file = NULL;

  

 

2. CInternetSession的代理与超时使用

 CInternetSession session;
 CHttpFile *file = NULL;

 INTERNET_PROXY_INFO proxyinfo;
 proxyinfo.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
 proxyinfo.lpszProxy ="211.104.243.73:8080";
 proxyinfo.lpszProxyBypass = NULL;

 session.SetOption(INTERNET_OPTION_PROXY,(LPVOID)&proxyinfo,
 sizeof(INTERNET_PROXY_INFO));
 session.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 5000);      // 5秒的连接超时
 session.SetOption(INTERNET_OPTION_SEND_TIMEOUT, 1000);           // 1秒的发送超时
 session.SetOption(INTERNET_OPTION_RECEIVE_TIMEOUT, 7000);        // 7秒的接收超时
 session.SetOption(INTERNET_OPTION_DATA_SEND_TIMEOUT, 1000);     // 1秒的发送超时
 session.SetOption(INTERNET_OPTION_DATA_RECEIVE_TIMEOUT, 7000);       // 7秒的接收超时
 session.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 1);          // 1次重试

 try{
        file = (CHttpFile*)session.OpenURL("http://www.163.com",1,
 INTERNET_FLAG_TRANSFER_ASCII|INTERNET_FLAG_RELOAD|INTERNET_FLAG_DONT_CACHE);
 }catch(CInternetException * m_pException){
        file = NULL;
        m_pException->m_dwError;
        m_pException->Delete();
        session.Close();
        MessageBox("CInternetException");
 }

 CString strLine;
 if(file != NULL){
        while(file->ReadString(strLine) != NULL){
               MessageBox(strLine);
        }
 }else{
        MessageBox("fail");
 }
 file->Close();
 session.Close();

  

 

 

3. CInternetSession的POST使用

 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 strRequest = "name=123&pwd=321\r\n"; //POST过去的数据
 CString strHeaders = "Accept: */*\r\nReferer: http://www.goodwaiter.com/\r\nAccept-Language: zh-cn\r\nContent-Type: application/x-www-form-urlencoded\r\nAccept-Encoding: gzip, deflate\r\nUser-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

 try{
        INTERNET_PORT nPort; //端口
      nPort=80;
        pServer = m_InetSession.GetHttpConnection("www.goodwaiter.com", nPort);
        pFile = pServer->OpenRequest(CHttpConnection::HTTP_VERB_POST,"/");
        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;
               }
        }
        delete pFile;
        delete pServer;
 }
 catch (CInternetException* e){
        e->m_dwContext;
 }