TechOverflow Logo
TechOverflow

How to decode query parameters using Boost::URL (minimal example)

This minimal example shows how to use Boost::URL to decode query parameters from a URL.

#include <iostream>
#include <boost/url.hpp>

using namespace boost::urls;

using std::cout, std::endl;

int main() {
    // Example encoded URL with query parameters
    std::string encoded_url_str = "https://example.com/api/login?username=myusername&password=mypassword";

    // Parse the URL
    url_view parsed_url(encoded_url_str);

    // Access and decode query parameters
    auto params = parsed_url.params();
    std::string username = (*params.find_last("username")).value;
    std::string password = (*params.find_last("password")).value;

    cout << "Decoded username: " << username << endl;
    cout << "Decoded password: " << password << endl;

    return 0;
}

How to compile

g++ -std=c++17 parse_query.cpp -o parse_query -lboost_url

Run using

./parse_query

Example output

Decoded username: myusername
Decoded password: mypassword