CURLPP 400 Bad Request при попытке запроса из Википедии
Я хочу извлечь реферат страницы википедии, используя следующий URL:
https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&titles=Stack%20Overflow
Я также использую библиотеку CURLPP для достижения этой цели:
#include <curlpp/cURLpp.hpp>
#include <curlpp/Easy.hpp>
#include <curlpp/Options.hpp>
#include <curlpp/Exception.hpp>
#include <sstream>
#include <fstream>
#include <iostream>
using namespace std;
int main()
{
string query = "Aldous Huxley";
curlpp::Cleanup myCleanup;
std::ostringstream os;
string url = "https://en.wikipedia.org/w/api.php?format=xml&action=query&prop=extracts&exintro=&explaintext=&titles=";
os << curlpp::options::Url(std::string( url + query));
string asAskedInQuestion = os.str();
cout << asAskedInQuestion << endl;
return 0;
}
Каждый раз, когда я пытаюсь сделать запрос Aldous Huxley Я получаю следующую ошибку:
<html>
<head><title>400 Bad Request</title></head>
<body bgcolor="white">
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx/1.9.4</center>
</body>
</html>
Любой другой запрос работает правильно. Почему я получаю эту ошибку?
Например, когда я пробую Анархизм, я получаю следующий вывод:
<api batchcomplete="">
<query>
<pages>
<page _idx="12" pageid="12" ns="0" title="Anarchism">
<extract xml:space="preserve">
Anarchism is a political philosophy that advocates stateless societies often defined as self-governed voluntary institutions, but that several authors have defined as more specific institutions based on non-hierarchical free associations. Anarchism holds the state to be undesirable, unnecessary, or harmful. While anti-statism is central, anarchism entails opposing authority or hierarchical organisation in the conduct of human relations, including, but not limited to, the state system. As an anti-dogmatic philosophy, anarchism draws on many currents of thought and strategy. Anarchism does not offer a fixed body of doctrine from a single particular world view, instead fluxing and flowing as a philosophy. There are many types and traditions of anarchism, not all of which are mutually exclusive. Anarchist schools of thought can differ fundamentally, supporting anything from extreme individualism to complete collectivism. Strains of anarchism have often been divided into the categories of social and individualist anarchism or similar dual classifications. Anarchism is usually considered a radical left-wing ideology, and much of anarchist economics and anarchist legal philosophy reflect anti-authoritarian interpretations of communism, collectivism, syndicalism, mutualism, or participatory economics.
</extract>
</page>
</pages>
</query>
</api>
Решение
Вам нужно URL-кодировать строку запроса. Используйте, например,
string query = "Aldous%20Huxley";
Другие решения