MFC 访问网址

.h

#ifndef HTTPCLIENT_H  #define HTTPCLIENT_H  #include <afxinet.h>  #include <string>  using namespace std;  #define  IE_AGENT  _T("Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)")  // 操作成功  #define SUCCESS        0  // 操作失败  #define FAILURE        1  // 操作超时 www.it165.net  #define OUTTIME        2  class CHttpClient  {  public:  CHttpClient(LPCTSTR strAgent = IE_AGENT);  virtual ~CHttpClient(void);  int HttpGet(LPCTSTR strUrl, LPCTSTR strPostData, string &strResponse);  int HttpPost(LPCTSTR strUrl, LPCTSTR strPostData, string &strResponse);  private:  int ExecuteRequest(LPCTSTR strMethod, LPCTSTR strUrl, LPCTSTR strPostData, string &strResponse);  void Clear();  private:  CInternetSession *m_pSession;  CHttpConnection *m_pConnection;  CHttpFile *m_pFile;  };  #endif // HTTPCLIENT_H  

.cpp文件

////////////////////////////////// HttpClient.cpp  #include "StdAfx.h"  #include "InternetConnection.h"  //#include "yazuoLog.h"    #define  BUFFER_SIZE       1024    #define  NORMAL_CONNECT             INTERNET_FLAG_KEEP_CONNECTION  #define  SECURE_CONNECT                NORMAL_CONNECT | INTERNET_FLAG_SECURE  #define  NORMAL_REQUEST             INTERNET_FLAG_RELOAD | INTERNET_FLAG_DONT_CACHE   #define  SECURE_REQUEST             NORMAL_REQUEST | INTERNET_FLAG_SECURE | INTERNET_FLAG_IGNORE_CERT_CN_INVALID    CHttpClient::CHttpClient(LPCTSTR strAgent)  {      m_pSession = new CInternetSession(strAgent);      m_pConnection = NULL;      m_pFile = NULL;  }      CHttpClient::~CHttpClient(void)  {      Clear();      if(NULL != m_pSession)      {          m_pSession->Close();          delete m_pSession;          m_pSession = NULL;      }  }    void CHttpClient::Clear()  {      if(NULL != m_pFile)      {          m_pFile->Close();          delete m_pFile;          m_pFile = NULL;      }        if(NULL != m_pConnection)      {          m_pConnection->Close();          delete m_pConnection;          m_pConnection = NULL;      }  }    int CHttpClient::ExecuteRequest(LPCTSTR strMethod, LPCTSTR strUrl, LPCTSTR strPostData, string &strResponse)  {      CString strServer;      CString strObject;      DWORD dwServiceType;      INTERNET_PORT nPort;      strResponse = "";        AfxParseURL(strUrl, dwServiceType, strServer, strObject, nPort);        if(AFX_INET_SERVICE_HTTP != dwServiceType && AFX_INET_SERVICE_HTTPS != dwServiceType)      {          return FAILURE;      }        try      {          m_pConnection = m_pSession->GetHttpConnection(strServer,              dwServiceType == AFX_INET_SERVICE_HTTP ? NORMAL_CONNECT : SECURE_CONNECT,              nPort);          m_pFile = m_pConnection->OpenRequest(strMethod, strObject,               NULL, 1, NULL, NULL,               (dwServiceType == AFX_INET_SERVICE_HTTP ? NORMAL_REQUEST : SECURE_REQUEST));            //DWORD dwFlags;          //m_pFile->QueryOption(INTERNET_OPTION_SECURITY_FLAGS, dwFlags);          //dwFlags |= SECURITY_FLAG_IGNORE_UNKNOWN_CA;          ////set web server option          //m_pFile->SetOption(INTERNET_OPTION_SECURITY_FLAGS, dwFlags);            //m_pFile->AddRequestHeaders(_T("Accept: *,*/*"));         // m_pFile->AddRequestHeaders(_T("Accept-Language: zh-cn"));         // m_pFile->AddRequestHeaders(_T("Content-Type: application/x-www-form-urlencoded"));         // m_pFile->AddRequestHeaders(_T("Accept-Encoding: gzip, deflate")); m_pFile->AddRequestHeaders(_T("Accept:application/json, text/javascript, */*"));          m_pFile->AddRequestHeaders(_T("Accept-Language:zh-CN,zh;q=0.8"));          m_pFile->AddRequestHeaders(_T("Content-Type:application/json; charset=UTF-8"));          m_pFile->AddRequestHeaders(_T("Accept-Encoding:gzip, deflate"));// 这里必须使用char*数据进行上传        m_pFile->SendRequest(NULL, 0, (LPVOID)(CW2A(strPostData)), strPostData == NULL ? 0 : _tcslen(strPostData));            char szChars[BUFFER_SIZE + 1] = {0};          string strRawResponse = "";          UINT nReaded = 0;          while ((nReaded = m_pFile->Read((void*)szChars, BUFFER_SIZE)) > 0)          {              szChars[nReaded] = '\0';              strRawResponse += szChars;              memset(szChars, 0, BUFFER_SIZE + 1);          }            int unicodeLen = MultiByteToWideChar(CP_UTF8, 0, strRawResponse.c_str(), -1, NULL, 0);          WCHAR *pUnicode = new WCHAR[unicodeLen + 1];          memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));            MultiByteToWideChar(CP_UTF8,0,strRawResponse.c_str(),-1, pUnicode,unicodeLen);          CString cs(pUnicode);          delete []pUnicode;           pUnicode = NULL;            strResponse = CW2A(cs.GetBuffer());            Clear();      }      catch (CInternetException* e)      {          Clear();          DWORD dwErrorCode = e->m_dwError;          e->Delete();            DWORD dwError = GetLastError();            //PRINT_LOG("dwError = %d", dwError, 0);            if (ERROR_INTERNET_TIMEOUT == dwErrorCode)          {              return OUTTIME;          }          else          {              return FAILURE;          }      }      return SUCCESS;  }    int CHttpClient::HttpGet(LPCTSTR strUrl, LPCTSTR strPostData, string &strResponse)  {      return ExecuteRequest(_T("GET"), strUrl, strPostData, strResponse);  }    int CHttpClient::HttpPost(LPCTSTR strUrl, LPCTSTR strPostData, string &strResponse)  {      return ExecuteRequest(_T("POST"), strUrl, strPostData, strResponse);  }