使用谷歌的C++原生客户端发送POST请求

#include <iostream>
#include <string>
#include <curl/curl.h>

size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* response) {
    size_t totalSize = size * nmemb;
    response->append((char*)contents, totalSize);
    return totalSize;
}

std::string SendPostRequest(const std::string& url, const std::string& postData) {
    CURL* curl = curl_easy_init();
    std::string response;

    if (curl) {
        // 设置URL
        curl_easy_setopt(curl, CURLOPT_URL, url.c_str());

        // 设置POST数据
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postData.c_str());

        // 设置回调函数处理响应
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);

        // 执行请求
        CURLcode res = curl_easy_perform(curl);

        // 检查请求是否成功
        if (res != CURLE_OK) {
            std::cerr << "Failed to send POST request: " << curl_easy_strerror(res) << std::endl;
        }

        // 清理资源
        curl_easy_cleanup(curl);
    }

    return response;
}

int main() {
    std::string url = "https://example.com/api";
    std::string postData = "key1=value1&key2=value2";

    std::string response = SendPostRequest(url, postData);

    std::cout << "Response: " << response << std::endl;

    return 0;
}

g++ -o main main.cpp -lcurl