检测网页是否可以打开, 再使用IE打开网页

//检测是否能连接网页

BOOL CanLinkWebPage(string strUrl)

{

	/*clock_t start, finish;

	double duration;

	start = clock();

	char buf[100];*/

	//使用mfc的CHttpFile来检测

	BOOL CanLink = FALSE;

	CInternetSession session("HttpClient");

	session.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 5000);      // 5000毫秒的连接超时

	session.SetOption(INTERNET_OPTION_SEND_TIMEOUT, 5000);           // 5000毫秒的发送超时

	session.SetOption(INTERNET_OPTION_RECEIVE_TIMEOUT, 5000);        // 5000毫秒的接收超时

	session.SetOption(INTERNET_OPTION_DATA_SEND_TIMEOUT, 5000);     // 5000毫秒的发送超时

	session.SetOption(INTERNET_OPTION_DATA_RECEIVE_TIMEOUT, 5000);       // 5000毫秒的接收超时

	session.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 1);          // 1次重试

	try

	{

		CHttpFile* pFile = (CHttpFile*)session.OpenURL(strUrl.c_str(), 1, INTERNET_FLAG_RELOAD | INTERNET_FLAG_TRANSFER_BINARY);

		DWORD dwStatusCode;   

		pFile-> QueryInfoStatusCode(dwStatusCode);

		/*sprintf_s(buf, "%s返回状态码是:%lu", strUrl.c_str(), dwStatusCode);

		UpdateDebugLogToFile(buf);*/

		//200 302 206状态码都可以

		if(dwStatusCode == HTTP_STATUS_OK || dwStatusCode == HTTP_STATUS_REDIRECT || dwStatusCode == HTTP_STATUS_PARTIAL_CONTENT)

			CanLink = TRUE;

		pFile -> Close();

		delete pFile; 

	}

	catch (CException* e)

	{

		e->Delete();

	}

	session.Close();

	/*finish = clock();

	duration = (double)(finish - start) / CLOCKS_PER_SEC;

	sprintf_s(buf, "%s%s%f%s, CanLink值:%d", strUrl.c_str()," 连接时间: ", duration, "秒", CanLink);

	UpdateDebugLogToFile(buf);*/

	return CanLink;

}

//测试几个URL的速度

unsigned __stdcall TestUrlSpeed(void* _pParam)

{

	string _Url;

	string* _pStr = (string*)_pParam;

	if (_pStr) {

		_Url = *_pStr;

		if(_pStr != NULL)

		{

			delete _pStr;

			_pStr = NULL;

		}

	}

	if(CanLinkWebPage(_Url))

		return 1;

	else

		return 0;

}

// 打开网页

unsigned __stdcall OpenUrlUseIEThread(void* _pParam)

{

	string _Url;

	string* _pStr = (string*)_pParam;

	if (_pStr) {

		_Url = *_pStr;

		SAFE_DELETE(_pStr);

	}

	if (!_Url.empty()) {

		vector<string> _UrlList;

		CVarTypeCvt::split_by(_Url,_UrlList,';');

		vector<string> urls;

		for (INT _Idx = 0; _Idx < (INT)_UrlList.size(); _Idx++) {

			_Url = _UrlList[_Idx];

			CVarTypeCvt::trim(_Url," \t\r\n");

			/*if (!_Url.empty() && CanOpenWebPage(_Url)) {

				::ShellExecute(NULL, "open",_Url.c_str(), NULL, NULL, SW_SHOWNORMAL);

				break;

			}*/

			if (!_Url.empty()) {

				urls.push_back(_Url);

			}

		}

		HANDLE* pHandles = new HANDLE[urls.size()];

		for(int i = 0; i < urls.size(); ++i)

		{

			unsigned _ThreadID;

			HANDLE _hThread = (HANDLE)_beginthreadex(NULL,NULL,TestUrlSpeed,(void*)new string(urls[i]),NULL,&_ThreadID);

			

			pHandles[i] = _hThread;

		}

		DWORD dw = WaitForMultipleObjects(urls.size(), pHandles, FALSE, 10000);

		if(dw != WAIT_FAILED && dw != WAIT_TIMEOUT)

		{

			DWORD dwRet;

			GetExitCodeThread(pHandles[dw - WAIT_OBJECT_0], &dwRet);

			if(dwRet)

			{

				::ShellExecute(NULL, "open",urls[dw - WAIT_OBJECT_0].c_str(), NULL, NULL, SW_SHOWNORMAL);

			}

		}

		for(int i = 0; i < urls.size(); ++i)

		{

			if(pHandles[i] != NULL)

			{

				CloseHandle(pHandles[i]);

				pHandles[i] = NULL;

			}

		}

		delete [] pHandles;

		pHandles = NULL;

	}

	return 0;

}

void OpenUrlUseIE(string _Url, BOOL _Async = TRUE)

{

	if (_Url.empty()) return;

	if (_Async) {

		unsigned _ThreadID;

		HANDLE _hThread = (HANDLE)_beginthreadex(NULL,NULL,OpenUrlUseIEThread,(void*)new string(_Url),NULL,&_ThreadID);

		CloseHandle(_hThread);

		_hThread = NULL;

	}

	else {

		::ShellExecute(NULL, "open",_Url.c_str(), NULL, NULL, SW_SHOWNORMAL);

	}

}