如何在此请求中使用 libcurl 并获得 json 服务器应答 C++？

Question

我有一些要求，我想在 libcurl 中使用它们。但我不知道该怎么做那么我应该由谁在代码中实现这一点，例如“curl.get(dsds) curl.header("", "")"

curl "https://pterodactyl.file.properties/api/client/account" \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer apikey' \
  -X GET \

curl "https://pterodactyl.file.properties/api/client/account/email" \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer apikey' \
  -X PUT \
  -d '{
  "email": "example@xample.com",
  "password": "Password"
}' 

curl "https://pterodactyl.file.properties/api/client/account/api-keys" \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer apikey' \
  -X POST \
  -d '{
  "description": "Restricted IPs",
  "allowed_ips": ["127.0.0.1", "192.168.0.1"]
}' 

curl "https://pterodactyl.file.properties/api/client/account/api-keys/NWKMYMT2Mrav0Iq2" \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer apikey' \
  -X DELETE \

Answer 1

从网络下载内容的基本功能是

#include <iostream>
#include<curl/curl.h>
static size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userp)
{
    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;
}
std::string curlDownload(std::string link){
    CURL* curl;
    CURLcode res;
    std::string readBuffer;
    curl = curl_easy_init();
    if (curl) {
        curl_easy_setopt(curl, CURLOPT_URL, link.c_str());
        curl_easy_setopt(curl, CURLOPT_USERNAME, "myUserName"); //auth for userName
        curl_easy_setopt(curl, CURLOPT_PASSWORD, "Password"); //auth for password
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
        res = curl_easy_perform(curl);
        curl_easy_cleanup(curl);
    }
    return readBuffer;
}
int main() {

    std::string myLink = "https://pterodactyl.file.properties/api/client/account";
    std::cout << curlDownload(myLink) << std::endl; //this will print your request for authorization

    return 0;
}

为了放置东西，你需要这样的东西，当然还有你自己的数据

curl = curl_easy_init();

if (curl) {
    headers = curl_slist_append(headers, client_id_header);
    headers = curl_slist_append(headers, "Content-Type: application/json");

    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers); 
    curl_easy_setopt(curl, CURLOPT_URL, request_url);  
    curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT"); /* !!! */

    curl_easy_setopt(curl, CURLOPT_POSTFIELDS, json_struct); /* data goes here */

    res = curl_easy_perform(curl);

    curl_slist_free_all(headers);
    curl_easy_cleanup(curl);
}

更多关于 put here and here

关于 CURLOPT 的更多信息 here 这将 return std::string 具有给定的输出，例如您的 json。然后你需要解析它。

要为 windows 安装 libcurl，您可以关注 this 线程

对于 linux cmake，您应该在 cmake 文件旁边添加

set(CURL_LIBRARY "-lcurl")
find_package(CURL REQUIRED)
include_directories(... ${CURL_INCLUDE_DIR})
target_link_libraries(... $(CURL_LIBRARIES))

如何在此请求中使用 libcurl 并获得 json 服务器应答 C++？

How to use libcurl with this request and get json server answer c++?

c++

libcurl