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CWeatherDataSpider.cpp
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335
CWeatherDataSpider.cpp
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#include "CWeatherDataSpider.h"
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#include"AuxFun.h"
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#define _WINSOCK_DEPRECATED_NO_WARNINGS
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//#include<WinSock2.h>
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#pragma comment(lib, "ws2_32.lib")
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#define RECV_BUFF_LENGTH 1024*10
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#define WEATHER_REALTIME 0
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#define WEATHER_FORECAST 1
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CWeatherDataSpider::CWeatherDataSpider()
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{
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m_strAreaCode = "天津";
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}
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CWeatherDataSpider::~CWeatherDataSpider()
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{
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}
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bool CWeatherDataSpider::GetWeatherDataXml()
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{
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//------------------创建描述符----------------------
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WSADATA wsadata;
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int ierror = -1;
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if (ierror = WSAStartup(MAKEWORD(2,2), &wsadata))
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{
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wchar_t tchTmp[100];
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swprintf(tchTmp,100, L"WSAStartup failure: %d\n", ierror);
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ErrHandle(tchTmp);
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return false;
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}
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//----------------------------------------------------
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m_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (INVALID_SOCKET == m_socket)
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{
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ErrHandle(L"Create socket failed");
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WSACleanup();
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return 0;
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}
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//unsigned long iMode = 1;
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//int retMode = ioctlsocket(m_socket, FIONBIO, (unsigned long *)&iMode);
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//if (retMode == SOCKET_ERROR)
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//{
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// return false;
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//}
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//if(connect(sock, (SOCKADDR*)&sa, sizeof(sa)))
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//连接主机
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if (!ConnectHost()) { goto bad; }
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//发送请求
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if (!SendReq()) { goto bad; }
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//接收回应
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if (!HandleAck()) { goto bad; }
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else{ CloseConnect(); return true; }
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bad:
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CloseConnect();
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return false;
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}
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void CWeatherDataSpider::CloseConnect()
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{
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if (m_socket)
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{
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closesocket(m_socket);
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}
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WSACleanup();
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}
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void CWeatherDataSpider::ErrHandle(const std::wstring msg, int code)
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{
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}
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bool CWeatherDataSpider::CheckIfRecSucceed(char * buf, int nTotalRecv, int nFlag)
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{
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int PosStart = -1;
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int PosEnd = -1;
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if (buf == NULL || nTotalRecv <= 0)
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{
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return false;
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}
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//解析回复是否是200
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//截取xml
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//
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std::string strHeadFind =buf;
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int n =strHeadFind.find("\r\n");
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if (-1 != (n = strHeadFind.rfind("200", n))) { return true; }
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PosStart = strHeadFind.find("content-length: ");//该标签 加空格16个字符
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PosStart =PosStart + 16;
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PosEnd = strHeadFind.find("\r\n", PosStart);
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std::string strLen =strHeadFind.substr(PosStart, PosEnd-PosStart);
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int nlen = atoi(strLen.c_str());
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PosStart = strHeadFind.find("\r\n\r\n")+4;
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char* Output = NULL;//= new char[10000];
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int iTotalRead = 0;
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inflate_read((char*)buf + PosStart, nlen, &Output, 1, iTotalRead);
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// add by lei.zhao 2015-11-03, Bug[12533]
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//bool bNewPacket = false;
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//if (nFlag == WEATHER_FORECAST)
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//{
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// char bufTemp[RECV_BUFF_LENGTH] = { 0 };
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// memcpy_s(bufTemp, RECV_BUFF_LENGTH, buf, nTotalRecv);
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// bufTemp[nTotalRecv] = 0;
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//
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// CString strTemp;
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// strTemp = bufTemp;
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// strTemp = strTemp.MakeLower();
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// int nFindPos = strTemp.Find(L"content-length: ");
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// if (nFindPos != -1)
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// {
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// int nLengthStart = nFindPos + 16;
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// int nLengthEnd = strTemp.Find(L"\r\n", nLengthStart);
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// if (nLengthEnd == -1)
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// {
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// return false;
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// }
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// int nLength = _tstoi(strTemp.Mid(nLengthStart, nLengthEnd - nLengthStart));
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// int nHearderLength = strTemp.Find(L"\r\n\r\n") + 4;
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// if (nHearderLength == -1)
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// {
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// return false;
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// }
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// if (nHearderLength + nLength > nTotalRec)
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// {
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// return false;
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// }
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// memset(m_pbyXmlBuf, 0, 10000);
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// char* Output = NULL;//= new char[10000];
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// int iTotalRead = 0;
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// inflate_read((char*)buf + nHearderLength, nLength, &Output, 1, iTotalRead);
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// memcpy_s(m_pbyXmlBuf, 10000, Output, iTotalRead);
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// delete[]Output;
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// bNewPacket = true;
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// }
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//}
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//if (!bNewPacket)
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//{
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// int nIndex = -1;
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// for (int i = 0; i< nTotalRec; i++)
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// {
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// if (buf[i] == '\r'
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// && buf[i + 1] == '\n'
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// && buf[i + 2] == '\r'
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// && buf[i + 3] == '\n'
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// )
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// {
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// nIndex = i + 4;
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// break;
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// }
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// }
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// if (nIndex <0)
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// {
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// return false;
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// }
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// memset(m_pbyXmlBuf, 0, 10000);
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// if (nFlag == WEATHER_REALTIME)
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// {
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// memcpy_s(m_pbyXmlBuf, 10000, buf + nIndex, nTotalRec - nIndex);
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// }
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// else if (nFlag == WEATHER_FORECAST)
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// {
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// int nIndexR = nIndex;
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// bool bFindCount = false;
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// do
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// {
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// if (buf[nIndexR] == '\r' && buf[nIndexR + 1] == '\n')
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// {
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// bFindCount = true;
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// break;
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// }
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// ++nIndexR;
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// } while (nIndexR<nTotalRec);
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// if (!bFindCount)
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// return false;
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// char chTmp[10] = { 0 };
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// memcpy_s(chTmp, sizeof chTmp, buf + nIndex, nIndexR - nIndex);
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// int nTmp = strtol(chTmp, NULL, 16);
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// if (!(nTmp + nIndexR + 9 == nTotalRec))
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// {
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// return false;
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// }
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// // FILE* file = fopen("D:\\Forecast_html.gz", "w");
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// // if (file == NULL)
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// // {
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// // return false;
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// // }
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// char* Output = NULL;//= new char[10000];
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// int iTotalRead = 0;
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// inflate_read((char*)buf + nIndexR + 2, nTmp, &Output, 1, iTotalRead);
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// memcpy_s(m_pbyXmlBuf, 10000, Output, iTotalRead);
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// delete[]Output;
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// }
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//}
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//TiXmlDocument xmlDoc;
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//xmlDoc.Parse(m_pbyXmlBuf);
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//if (xmlDoc.Error())
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//{
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// return false;
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//}
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//xmlDoc.SaveFile("D:\\demotest.xml");//for debug only
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//if (nFlag == WEATHER_REALTIME)
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//{
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// m_xmlDocRealTime = xmlDoc;
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//}
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//else
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//{
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// m_xmlDocForecast = xmlDoc;
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//}
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return true;
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}
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bool CWeatherDataSpider::SendReq()
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{
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//将 http://wthrcdn.etouch.cn/WeatherApi?city=天津 中文utf编码
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//转换为 http://wthrcdn.etouch.cn/WeatherApi?city=%E5%A4%A9%E6%B4%A5
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std::string SendTmp = MBCStoUTF8(m_strAreaCode.c_str());
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std::string SendTmp2 = UrlEncode(SendTmp);
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std::string strSnd = "GET /WeatherApi?city=" + SendTmp2;
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strSnd += " HTTP/1.1\r\n";
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strSnd += "HOST:wthrcdn.etouch.cn\r\n";
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strSnd += "Connection:close\r\n\r\n";
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strSnd += "User-Agent:Mozilla/5.0 (Windows NT 6.1; rv:32.0) Gecko/20100101 Firefox/32.0\r\n\r\n";
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if (SOCKET_ERROR == send(m_socket, strSnd.c_str(), strSnd.length(), 0))
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{
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int ret = WSAGetLastError();
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return false;
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}
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return true;
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}
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//突然懒了，一次接收算了，整这么多幺蛾子木用
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bool CWeatherDataSpider::HandleAck()
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{
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char* pRecvBuff = new char[RECV_BUFF_LENGTH];//10kBbuff
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memset(pRecvBuff, 0, RECV_BUFF_LENGTH);
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bool bIfRecSucceed = false;
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int nTotalNum = 0;
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int nRet = SOCKET_ERROR;
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do
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{
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nRet = recv(m_socket, (char*)pRecvBuff + nTotalNum, RECV_BUFF_LENGTH, 0);
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if (nRet == SOCKET_ERROR)
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{
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int r = WSAGetLastError();
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break;
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}
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else if (nRet == 0)
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{
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break;
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}
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else
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{
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nTotalNum += nRet;
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if (CheckIfRecSucceed(pRecvBuff, nTotalNum, 0))
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{
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printf("%s", pRecvBuff);
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bIfRecSucceed = true;
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break;
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}
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}
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} while (true);
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delete[] pRecvBuff;
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if (!bIfRecSucceed)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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bool CWeatherDataSpider::ConnectHost()
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{
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sockaddr_in sa;
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sa.sin_family = AF_INET;
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sa.sin_port = htons(80);
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struct hostent *lphost;
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lphost = gethostbyname("wthrcdn.etouch.cn");
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if (lphost != NULL)
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{
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sa.sin_addr.s_addr = ((LPIN_ADDR)lphost->h_addr)->s_addr;
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}
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else
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{
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CloseConnect();
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return false;
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}
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//成功返回0
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int nRet = connect(m_socket, (SOCKADDR*)&sa, sizeof(sa));
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if (!nRet)
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{
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return true;
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}
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int wsaErr = WSAGetLastError();
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std::wstring strErr = L"connect err";
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ErrHandle(strErr, wsaErr);
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return false;
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}
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