CInternetSession的简单使用

1. CInternetSession的简单使用

CInternetSession session;

CHttpFile *file = NULL;

CString strURL = " http://www.20abcd.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");

return;

}

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;

}