c++中curl库的使用案例

#include #include <curl/curl.h>

//回调函数，将获取到的数据输出到控制台size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream) {size_t written = fwrite(ptr, size, nmemb, (FILE *)stream);return written;}

int main() {CURL *curl;FILE *fp;CURLcode res;

//初始化curlcurl = curl_easy_init();if (curl) {    //设置URL    curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com");    //打开文件，将获取的数据写入到文件中    fp = fopen("output.html", "wb");    if (fp) {        //设置回调函数        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);        curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);        //执行请求        res = curl_easy_perform(curl);        if (res != CURLE_OK) {            fprintf(stderr, "curl_easy_perform() failed: %s\n",                    curl_easy_strerror(res));        }        //关闭文件        fclose(fp);    }    //清理curl    curl_easy_cleanup(curl);}return 0;

}