使用WinINet实现Http访问：
#include <windows.h>#include <wininet.h>#include <iostream>int main() { HINTERNET hInternet; HINTERNET hConnect; DWORD bytesRead; char buffer[4096]; // 初始化WinINet hInternet = InternetOpen(L"WinINet Example", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0); if (hInternet == NULL) { std::cout << "Failed to initialize WinINet: " << GetLastError() << std::endl; return 1; } // 打开Http连接 hConnect = InternetOpenUrlA(hInternet, "http://www.example.com", NULL, 0, INTERNET_FLAG_RELOAD, 0); if (hConnect == NULL) { std::cout << "Failed to open Http connection: " << GetLastError() << std::endl; return 1; } // 读取响应数据 while (InternetReadFile(hConnect, buffer, sizeof(buffer), &bytesRead) && bytesRead > 0) { std::cout.write(buffer, bytesRead); } // 关闭连接和WinINet InternetCloseHandle(hConnect); InternetCloseHandle(hInternet); return 0;}使用WinHTTP实现Http访问：
#include <windows.h>#include <winhttp.h>#include <iostream>int main() { HINTERNET hSession; HINTERNET hConnect; DWORD bytesRead; char buffer[4096]; // 初始化WinHTTP hSession = WinHttpOpen(L"WinHTTP Example", WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0); if (hSession == NULL) { std::cout << "Failed to initialize WinHTTP: " << GetLastError() << std::endl; return 1; } // 打开Http连接 hConnect = WinHttpOpenRequest(hSession, L"GET", L"http://www.example.com", NULL, WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, 0); if (hConnect == NULL) { std::cout << "Failed to open Http connection: " << GetLastError() << std::endl; WinHttpCloseHandle(hSession); return 1; } // 发送请求 if (!WinHttpSendRequest(hConnect, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0)) { std::cout << "Failed to send Http request: " << GetLastError() << std::endl; WinHttpCloseHandle(hConnect); WinHttpCloseHandle(hSession); return 1; } // 接收响应 if (!WinHttpReceiveResponse(hConnect, NULL)) { std::cout << "Failed to receive Http response: " << GetLastError() << std::endl; WinHttpCloseHandle(hConnect); WinHttpCloseHandle(hSession); return 1; } // 读取响应数据 while (WinHttpReadData(hConnect, buffer, sizeof(buffer), &bytesRead) && bytesRead > 0) { std::cout.write(buffer, bytesRead); } // 关闭连接和WinHTTP WinHttpCloseHandle(hConnect); WinHttpCloseHandle(hSession); return 0;}