ServiceNow Cart API - C++

Introduction

ServiceNow provides a REST API for the cart management. This API allows developers to interact with the cart system programmatically. The API also provides a way to retrieve, update and delete the cart items.

In this article, we will be discussing the ServiceNow cart API in C++. We will go through the basic concepts of the cart API and learn how to build web applications using the API.

Getting Started

To use the ServiceNow cart API in C++, we will need to include the following libraries:

#include <iostream>
#include <vector>
#include <string>
#include <cpprest/http_client.h>
#include <cpprest/filestream.h>
#include <cpprest/json.h>

Authenticating with ServiceNow

Before accessing the cart API, we need to authenticate with ServiceNow. We will use basic authentication to authenticate our application.

web::http::client::http_client_config config;
config.set_credentials(web::credentials(username, password));
web::http::client::http_client client(web::uri(url), config);

Adding Items to the Cart

To add an item to the cart, we will need to send a POST request to the API endpoint. Here's how we can add an item to the cart:

// Build the JSON payload
web::json::value json;
json[U("item")] = web::json::value::string(U("Item Name"));
json[U("price")] = web::json::value::number(10.0);

// Send the request
client.request(web::http::methods::POST, U("/api/cart"), json.serialize(), U("application/json")).then([&](web::http::http_response response)
{
    // Handle the response
});

Retrieving the Cart

To retrieve the cart items, we will need to send a GET request to the API endpoint. Here's how we can retrieve the cart:

// Send the request
client.request(web::http::methods::GET, U("/api/cart")).then([&](web::http::http_response response)
{
    // Handle the response
});

Updating Items in the Cart

To update an item in the cart, we will need to send a PUT request to the API endpoint. Here's how we can update an item in the cart:

// Build the JSON payload
web::json::value json;
json[U("id")] = web::json::value::string(U("Item ID"));
json[U("item")] = web::json::value::string(U("New Item Name"));
json[U("price")] = web::json::value::number(20.0);

// Send the request
client.request(web::http::methods::PUT, U("/api/cart"), json.serialize(), U("application/json")).then([&](web::http::http_response response)
{
    // Handle the response
});

Removing Items from the Cart

To remove an item from the cart, we will need to send a DELETE request to the API endpoint. Here's how we can remove an item from the cart:

// Build the JSON payload
web::json::value json;
json[U("id")] = web::json::value::string(U("Item ID"));

// Send the request
client.request(web::http::methods::DEL, U("/api/cart"), json.serialize(), U("application/json")).then([&](web::http::http_response response)
{
    // Handle the response
});

Conclusion

In this article, we went through the basic concepts of the ServiceNow cart API in C++. We learned how to build web applications using the API by adding, retrieving, updating and removing items from the cart. ServiceNow cart API provides a powerful tool for managing cart items programmatically.