HTTP使用 multipart/form-data 上传多个字段（包括文件字节流 octet-stream）

/*PHttpRequest中自行组装body之后，HttpSendRequest中自己判断body长度时，由于文件内容中存在 \0，所以body长度计算错误，导致上传的文件内容不正确，直接指定body的长度也不行...PHttpRequest中未使用InternetWriteFile，*/int UpdateToServer2(stResumeInfo st, int& candId, CString& szUpdateTime, int& nFileSize){ ???HINTERNET hSession=0; ???HINTERNET hConnect=0; ???HINTERNET hRequest=0; ???????DWORD dwNumberOfBytesWritten=0; ???DWORD dwBytesSend=0; ???DWORD dwFlag = 0; ???candId = 0; ???szUpdateTime.Empty(); ???hSession=InternetOpen(_T("Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0"), ????????????????????????????????INTERNET_OPEN_TYPE_PRECONFIG, ??0, INTERNET_INVALID_PORT_NUMBER, ?0); ???if (0==hSession) ???{ ???????LOG_INFO(L"----- updateResume InternetOpen return 0 !!! GetLastError: %d------", GetLastError()); ???????return 0; ???} ???unsigned short port_ = INTERNET_DEFAULT_HTTP_PORT; ???if (CConfig::GetServerType() == 1) //外网用HTTPS ???{ ???????port_ = INTERNET_DEFAULT_HTTPS_PORT; ???} ???hConnect=InternetConnect(hSession, CConfig::URL_HOST, port_, _T(""), _T(""), INTERNET_SERVICE_HTTP, ?0, ??0); ?//URL_HOST不能带http:// ???if (0==hConnect) ???{ ???????InternetCloseHandle(hSession); ???????LOG_INFO(L"----- updateResume InternetConnect return 0 !!! GetLastError: %d------", GetLastError()); ???????return 0; ???} ???dwFlag=INTERNET_FLAG_RELOAD | INTERNET_FLAG_NO_AUTH | INTERNET_FLAG_NO_UI ; ???if (CConfig::GetServerType() == 1) //外网用HTTPS ???????dwFlag |= INTERNET_FLAG_SECURE|INTERNET_FLAG_IGNORE_CERT_CN_INVALID|INTERNET_FLAG_IGNORE_CERT_DATE_INVALID|INTERNET_FLAG_IGNORE_REDIRECT_TO_HTTP ;#ifdef UP_FILE_TO_SEVER ???hRequest=HttpOpenRequest(hConnect, _T("POST"), ?RESUME_UPLOAD_URL, ?HTTP_VERSION, ???0, ?0, ?dwFlag, ?0);//old #else ???hRequest=HttpOpenRequest(hConnect, _T("POST"), ?RESUME_UPLOAD_URL_NEW, ?HTTP_VERSION, ???0, ?0, ?dwFlag, ?0);#endif ???if (0==hRequest) ???{ ???????InternetCloseHandle(hConnect); ???????InternetCloseHandle(hSession); ???????LOG_INFO(L"----- updateResume HttpOpenRequest return 0 !!! GetLastError: %d------", GetLastError()); ???????return 0; ???} ???if (m_bCancel) return 0; ???//设置Header ???//TCHAR content_type[128]={0}; ???//_stprintf_s(content_type,TEXT("Content-Type: multipart/form-data; boundary=%s"), _T(ABOUNDARY)); ???CString content_type = TEXT("Content-Type: multipart/form-data; boundary="); ???content_type.Append(_T(ABOUNDARY)); ???HttpAddRequestHeaders(hRequest,content_type,-1,HTTP_ADDREQ_FLAG_ADD|HTTP_ADDREQ_FLAG_REPLACE); ???//验证cid和token ????CString szAuthorization = TEXT("Authorization: "); ???szAuthorization.Append(/*CA2T(s64, CP_UTF8)*/CBackstageManager::GetInstance().GetAuthorizationString()); ???HttpAddRequestHeaders(hRequest,szAuthorization, -1,HTTP_ADDREQ_FLAG_ADD|HTTP_ADDREQ_FLAG_REPLACE); ????szAuthorization = TEXT("Agent-Info: "); ???szAuthorization.Append(CBackstageManager::GetInstance().GetAgentInfo()); ????HttpAddRequestHeaders(hRequest,szAuthorization, -1,HTTP_ADDREQ_FLAG_ADD|HTTP_ADDREQ_FLAG_REPLACE); #ifdef UP_FILE_TO_SEVER ???//读取文件内容和长度 ???HANDLE hFile; ???hFile=CreateFile(st.strFilePath, ?GENERIC_READ, ??FILE_SHARE_READ|FILE_SHARE_WRITE, 0, ???????OPEN_EXISTING, ?FILE_ATTRIBUTE_NORMAL, ?0); ???DWORD dwFileSize=GetFileSize(hFile,0); ???BYTE* lpBuffer=(BYTE*)VirtualAlloc(0,dwFileSize,MEM_COMMIT,PAGE_READWRITE); ???if (0==lpBuffer) ???{ ???????InternetCloseHandle(hRequest); ???????InternetCloseHandle(hConnect); ???????InternetCloseHandle(hSession); ???????LOG_INFO(L"----- updateResume VirtualAlloc return 0 !!! GetLastError: %d------", GetLastError()); ???????return 0; ???} ???DWORD dwRead; ???ReadFile(hFile,lpBuffer,dwFileSize,&dwRead,0); ???CloseHandle(hFile);#endif ???char first_boundary[64]={0}; ???char delimiter[64]={0}; ???char end_boundary[64]={0}; ???sprintf_s(first_boundary,"--%s\r\n",ABOUNDARY); ???sprintf_s(delimiter,"\r\n--%s\r\n",ABOUNDARY); ???sprintf_s(end_boundary,"\r\n--%s--\r\n",ABOUNDARY); ???//LPSTR rn="\r\n"; //HTTP POST数据中的换行必须使用\r\n ???std::map<std::string, std::string> ssmap; ???GetResumeInfoMap(st, ssmap); ////上传给后台必须使用字符串，不能用整型 ???//计算body长度 ???char content_dispos[64]={0}; ???std::map<std::string, std::string>::iterator it = ssmap.begin(); ???int length = strlen(first_boundary); ???for(; it != ssmap.end(); it++) ???{ ???????memset(content_dispos, 0, sizeof(content_dispos)); ???????sprintf_s(content_dispos,"Content-Disposition: form-data; name=\"%s\"\r\n\r\n", it->first.c_str()); ???????length += strlen(content_dispos); ???????length += it->second.length(); ???????length += strlen(delimiter); ???}#ifdef UP_FILE_TO_SEVER ???char content_dispos2[256]={0}; ???CString stmName = st.file_name; ???if(stmName.GetLength() > 32) ???{ ???????stmName = stmName.Left(28) + PathFindExtension(stmName); //防止content_dispos2越界 ???} ???std::string name = CT2A(stmName, CP_UTF8); ???sprintf_s(content_dispos2, "Content-Disposition: form-data; name=\"file\"; filename=\"%s\"\r\n", name.c_str()); ???LPSTR content_type2="Content-Type: application/octet-stream\r\n\r\n"; ???//加上File长度 ???length +=dwFileSize + strlen(content_dispos2) +strlen(content_type2);#else ???length -= strlen(delimiter);#endif ???length += strlen(end_boundary); ???if (m_bCancel) return FALSE; ????INTERNET_BUFFERS BufferIn; ???BufferIn.dwStructSize = sizeof( INTERNET_BUFFERS ); ???BufferIn.Next = NULL; ????BufferIn.lpcszHeader = NULL; ???BufferIn.dwHeadersLength = 0; ???BufferIn.dwHeadersTotal = 0; ???BufferIn.lpvBuffer = NULL; ???????????????????BufferIn.dwBufferLength = 0; ???BufferIn.dwBufferTotal = length; ???BufferIn.dwOffsetLow = 0; ???BufferIn.dwOffsetHigh = 0; ???if (!HttpSendRequestEx(hRequest,&BufferIn,0,0,0)) ???{ ???????InternetCloseHandle(hRequest); ???????InternetCloseHandle(hConnect); ???????InternetCloseHandle(hSession); ???????LOG_INFO(L"----- updateResume HttpSendRequestEx return 0 !!! GetLastError: %d------", GetLastError()); ???????return 0; ???} ???//上传body ???InternetWriteFile(hRequest,(byte*)first_boundary,strlen(first_boundary),&dwNumberOfBytesWritten); //first boundary ???int count = ssmap.size(); ???std::map<std::string, std::string>::iterator iter = ssmap.begin(); ???for(int index = 0; iter != ssmap.end(); iter++, index++) ???{ ???????memset(content_dispos, 0, sizeof(content_dispos)); ???????sprintf_s(content_dispos,"Content-Disposition: form-data; name=\"%s\"\r\n\r\n", iter->first.c_str()); ???????InternetWriteFile(hRequest,(byte*)content_dispos, strlen(content_dispos),&dwNumberOfBytesWritten); ???????std::string value = iter->second; ????????InternetWriteFile(hRequest,(byte*)value.c_str(), value.length(), &dwNumberOfBytesWritten);#ifndef UP_FILE_TO_SEVER ????????if(index != (count-1)) #endif ???????????InternetWriteFile(hRequest,(byte*)delimiter,strlen(delimiter),&dwNumberOfBytesWritten); ????} ???if (m_bCancel) return 0;#ifdef UP_FILE_TO_SEVER ???//上传文件 ???InternetWriteFile(hRequest,(byte*)content_dispos2,strlen(content_dispos2),&dwNumberOfBytesWritten); ???InternetWriteFile(hRequest,(byte*)content_type2,strlen(content_type2),&dwNumberOfBytesWritten); ???InternetWriteFile(hRequest,lpBuffer,dwFileSize,&dwNumberOfBytesWritten);#endif ???//last boundary ???InternetWriteFile(hRequest,(byte*)end_boundary,strlen(end_boundary),&dwNumberOfBytesWritten); ???if(!HttpEndRequest(hRequest,0,0,0)) ???{ ???????int a = GetLastError(); ???????HttpEndRequest(hRequest,0,0,0); ???}#ifdef UP_FILE_TO_SEVER ???VirtualFree(lpBuffer,0,MEM_RELEASE);#endif ???if (m_bCancel) return 0; ???//获取返回数据 ???std::stringstream sstream; ???GetResponse(&sstream, hRequest, 5000); ???Json::Value root; ???Json::Reader reader; ???reader.parse(sstream.str(), root); ???int code = -1; ???if(!root["code"].isNull()) ???{ ???????code = root["code"].asInt(); //0表示成功, ????}if(!root["data"].isNull()) ???{ ???????Json::Value data = root["data"]; ????????int userId = data["userId"].asInt(); ???????candId = data["candId"].asInt(); ???????int resumeId = data["resId"].asInt(); ???????nFileSize = data["resSize"].asInt(); ???} ???InternetCloseHandle(hRequest); ???InternetCloseHandle(hConnect); ???InternetCloseHandle(hSession); ??return 0;}