简易http

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 代码如下 ```cpp #pragma once #ifndef HTTP_H #define HTTP_H #include <string> #include <stdio.h> #include <windows.h> #include <wininet.h> #include <fstream> #include <sstream> constexpr auto MAXSIZE = 1024; #pragma comment(lib, "Wininet.lib") class MYhttp { public: MYhttp() = default; ~MYhttp() = default; static std::string Utf8ToGbk(const char* src_str); static std::string openUrl(LPCSTR url); static std::string GbkToUtf8(const char* src_str); private: }; std::string MYhttp::GbkToUtf8(const char* src_str) { int len = MultiByteToWideChar(CP_ACP, 0, src_str, -1, NULL, 0); wchar_t* wstr = new wchar_t[len + 1]; memset(wstr, 0, static_cast<size_t>(len) + 1); MultiByteToWideChar(CP_ACP, 0, src_str, -1, wstr, len); len = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL); char* str = new char[len + 1]; memset(str, 0, static_cast<size_t>(len) + 1); WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, len, NULL, NULL); std::string strTemp = str; if (wstr) delete[] wstr; if (str) delete[] str; return strTemp; } std::string MYhttp::Utf8ToGbk(const char* src_str) { int len = MultiByteToWideChar(CP_UTF8, 0, src_str, -1, NULL, 0); wchar_t* wszGBK = new wchar_t[len + 1]; memset(wszGBK, 0, static_cast<size_t>(len) * 2 + 2); MultiByteToWideChar(CP_UTF8, 0, src_str, -1, wszGBK, len); len = WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, NULL, 0, NULL, NULL); char* szGBK = new char[len + 1]; memset(szGBK, 0, static_cast<size_t>(len) + 1); WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, szGBK, len, NULL, NULL); std::string strTemp(szGBK); if (wszGBK) delete[] wszGBK; if (szGBK) delete[] szGBK; return strTemp; } std::string MYhttp::openUrl(LPCSTR url) { HINTERNET hSession = InternetOpen(L"UrlTest", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0); std::stringstream ret; if (hSession != NULL) { HINTERNET hHttp = InternetOpenUrlA(hSession, url, NULL, 0, INTERNET_FLAG_DONT_CACHE, 0); if (hHttp != NULL) { //printf_s("%s\n", url); BYTE Temp[MAXSIZE]{ 0 }; ULONG Number = 1; while (Number >0) { InternetReadFile(hHttp, Temp, MAXSIZE - 1, &Number); Temp[Number] = '\0'; //printf("%s", Temp); ret <

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