C++使用CHttpFile实现Http请求

C++实现http请求的代码，参照网上的修改了下在mfc中使用

1、HttpClient.h

//////////////////////////////////// HttpClient.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        2class CHttpClient{public:CHttpClient(LPCTSTR strAgent = IE_AGENT);virtual ~CHttpClient(void);int HttpGet(LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse);int HttpPost(LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse);int HttpPut(LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse);private:int ExecuteRequest(int strMethod, LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse);void Clear();private:CInternetSession *m_pSession;CHttpConnection *m_pConnection;CHttpFile *m_pFile;};#endif // HTTPCLIENT_H

2、HttpClient.cpp

////////////////////////////////// HttpClient.cpp#include "stdafx.h"#include "HttpClient.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_INVALIDCHttpClient::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(int strMethod, LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse){int result =FAILURE ;//WCHAR* wPostData = strPostData.GetBuffer();CString strServer;CString strObject;DWORD dwServiceType;INTERNET_PORT nPort;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));/*设置请求相关参数*/m_pFile->AddRequestHeaders(L"Accept: */*,application/json");//accept请求报头域，表示客户端接受哪些类型的信息m_pFile->AddRequestHeaders(L"Accept-Charset:UTF8");m_pFile->AddRequestHeaders(L"Accept-Language: zh-cn;q=0.8,en;q=0.6,ja;q=0.4");m_pFile->AddRequestHeaders(L"Content-Type:application/json");//content为实体报头域，格式及编码//m_pFile->SendRequest(NULL, 0, (LPVOID)(LPCTSTR)strPostData, strPostData == NULL ? 0 : _tcslen(strPostData));/*请求body内容先转为UTF-8编码，与服务端保持一致,cword为要发送内容*/char*cword; //ANSI指针if (strPostData != NULL){DWORD  num = WideCharToMultiByte(CP_UTF8, 0, strPostData, -1, NULL, 0, NULL, NULL);//計算這個UNICODE实际由几个UTF-8字組成cword = (char*)calloc(num, sizeof(char));   //申请空间if (cword == NULL)                          //是否申请{free(cword);}memset(cword, 0, num*sizeof(char));     //初始化WideCharToMultiByte(CP_UTF8, 0, strPostData, -1, cword, num, NULL, NULL);printf("content长度为%d\n", strlen(cword));m_pFile->SendRequest(NULL, 0, cword, strlen(cword));//发送请求}else{m_pFile->SendRequest(NULL, 0, NULL, 0);//发送请求}DWORD dwRet;m_pFile->QueryInfoStatusCode(dwRet);//查询执行状态printf("HTTP_STATUS_code:%d\n", dwRet);if (dwRet == HTTP_STATUS_OK){//http请求执行失败result = SUCCESS;}/*保存http响应*/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);}/*utf8转unicode*/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);strResponse = pUnicode;//最终响应结果//TRACE(strResponse + L"");delete[]pUnicode;pUnicode = NULL;Clear();}catch (CInternetException* e){Clear();DWORD dwErrorCode = e->m_dwError;e->Delete();DWORD dwError = GetLastError();printf("dwError = %d", dwError, 0);strResponse = L"CInternetException\n";if (ERROR_INTERNET_TIMEOUT == dwErrorCode){return OUTTIME;}else{return FAILURE;}}return result;}int CHttpClient::HttpGet(LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse){return ExecuteRequest(CHttpConnection::HTTP_VERB_GET, strUrl, NULL, strResponse);}int CHttpClient::HttpPost(LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse){return ExecuteRequest(CHttpConnection::HTTP_VERB_POST, strUrl, strPostData, strResponse);}int CHttpClient::HttpPut(LPCTSTR strUrl, LPCTSTR strPostData, CString &strResponse){return ExecuteRequest(CHttpConnection::HTTP_VERB_PUT, strUrl, strPostData, strResponse);}