SDK网络连接/多线程示例代码


SDK网络连接/多线程示例代码
2010年06月09日
  
        static BOOL SendMsg(wstring url) 
  { 
  DWORD dwNetWorkStatus = QueryNetWorkStatus(); 
  HINTERNET hSession = NULL,hConnection = NULL,hOpenRequest = NULL; 
  //如果没有网络则连接网络 
  if (dwNetWorkStatus == NETWORK_NONE) 
  { 
  Dial_StartGprsConnect2(0,GPRS_FORCE_APP_TYPE); 
  //联网后重新查询网络类型 
  dwNetWorkStatus = QueryNetWorkStatus(); 
  } 
  //判定是否为cmwap,使用代理 
  if (dwNetWorkStatus == NETWORK_EDGE_PROXY) 
  hSession = InternetOpen(L"Meizu", INTERNET_OPEN_TYPE_PROXY, L"10.0.0.172:80", NULL, 0); 
  else 
  hSession = InternetOpen(L"Meizu", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0); 
  string url_utf8 = MzConvert::UnicodeToUTF8(url);//编码 
  url = ::MzConvert::string2wstring(url_utf8); 
  //打开链接,获取文件 
  HINTERNET hHttpFile = InternetOpenUrlW(hSession, url.c_str(), NULL, 0,INTERNET_FLAG_RELOAD, 0); 
  //读取文件内容 
  char buf[1024]={0}; 
  DWORD dwRead=0; 
  BOOL  ReadReturn=InternetReadFile(hHttpFile,(LPVOID)buf, 1024+1,&dwRead); 
  wstring str = MzConvert::UTF8ToUnicode(string(buf));//解码 
  //关闭连接 
  InternetCloseHandle(hSession); 
  return true; 
  }
这里面编码解码很重要的,不然中文乱码问题很头疼!
  多线程:
  声明:static DWORD WINAPI ThreadProc (LPVOID pArg);
  static wstring SEND = L"http://quickfetion.appspot.com/sendmsg?username=?;password=?;sendto=?;message=?";
  定义:static DWORD WINAPI ThreadProc (LPVOID pArg)
  {
  wstring *c = (wstring*)pArg;
  wstring url = wstring(*c);
  CQuickFxMainWnd::SendMsg(url);
  return 1;
  }
  调用:HANDLE hThread = CreateThread(NULL, 0, ::ThreadProc,&SEND, 0, 0);
  这里注意函数定义形式,static关键字,还有全局概念,否则出现线程阻塞,不可访问资源的错误!
  个人理解,各位高手莫要见笑!!!
  附上编码解码的头文件:
 
  using namespace std; 
  class MzConvert 
  { 
  public: 
  static wstring string2wstring(const string& s) 
  { 
  int len; 
  int slength = (int)s.length() + 1; 
  len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0); 
  wchar_t* buf = new wchar_t[len]; 
  MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len); 
  std::wstring r(buf); 
  delete[] buf; 
  return r; 
  } 
  static wstring ANSIToUnicode( const string& str ) 
  { 
  int len = str.length(); 
  int unicodeLen = ::MultiByteToWideChar( CP_ACP, 0, str.c_str(), -1, NULL, 0 ); 
  wchar_t * pUnicode; 
  pUnicode = new wchar_t[unicodeLen+1]; 
  memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t)); 
  MultiByteToWideChar( CP_ACP, 0, str.c_str(), -1, (LPWSTR)pUnicode, unicodeLen ); 
  wstring rt = ( wchar_t* )pUnicode; 
  delete pUnicode; 
  return rt; 
  } 
  static string UnicodeToANSI( const wstring& str ) 
  { 
  char* pElementText; 
  int iTextLen; 
  // wide char to multi char 
  iTextLen = WideCharToMultiByte( CP_ACP, 0, str.c_str(), -1, NULL, 0, NULL, NULL ); 
  pElementText = new char[iTextLen + 1]; 
  memset( ( void* )pElementText, 0, sizeof( char ) * ( iTextLen + 1 ) ); 
  WideCharToMultiByte( CP_ACP, 0, str.c_str(), -1, pElementText, iTextLen, NULL, NULL ); 
  string strText = pElementText; 
  delete[] pElementText; 
  return strText; 
  } 
  static wstring UTF8ToUnicode( const string& str ) 
  { 
  int len = str.length(); 
  int unicodeLen = ::MultiByteToWideChar( CP_UTF8, 0, str.c_str(), -1, NULL, 0 ); 
  wchar_t * pUnicode; 
  pUnicode = new wchar_t[unicodeLen+1]; 
  memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t)); 
  MultiByteToWideChar( CP_UTF8, 0, str.c_str(), -1, (LPWSTR)pUnicode, unicodeLen ); 
  wstring rt = ( wchar_t* )pUnicode; 
  delete pUnicode; 
  return rt; 
  } 
  static string UnicodeToUTF8( const wstring& str ) 
  { 
  char* pElementText; 
  int iTextLen; 
  // wide char to multi char 
  iTextLen = WideCharToMultiByte( CP_UTF8, 0, str.c_str(), -1, NULL, 0, NULL, NULL ); 
  pElementText = new char[iTextLen + 1]; 
  memset( ( void* )pElementText, 0, sizeof( char ) * ( iTextLen + 1 ) ); 
  WideCharToMultiByte( CP_UTF8, 0, str.c_str(), -1, pElementText, iTextLen, NULL, NULL ); 
  string strText = pElementText; 
  delete[] pElementText; 
  return strText; 
  } 
  };

  [ 本帖最后由 zhaxg 于 2009-10-13 08:59 编辑 ]

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