C++使用GET发送数据

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

// 回调函数，用于处理接收到的数据
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;
}

int main() {
    CURL* curl;
    CURLcode res;
    std::string response;

    // 初始化CURL
    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();

    if (curl) {
        // 设置请求的URL
        curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/data");

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

        // 发送GET请求
        res = curl_easy_perform(curl);

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

        // 清理CURL资源
        curl_easy_cleanup(curl);
    }

    // 清理全局CURL资源
    curl_global_cleanup();

    return 0;
}