Small Gson wrapper (?) for MercadoPago's Java SDK. Only with payment wrapper atm.

MercadoUtils.java

package com.mrpowergamerbr.sparklysunnyfunny.utils;

import java.util.ArrayList;

import org.codehaus.jettison.json.JSONObject;

import com.google.gson.Gson;
import com.mercadopago.MP;

public class MercadoUtils {
    public static final Gson gson = new Gson();
    public static final MP mp = new MP(MercadoTokens.client_id, MercadoTokens.client_token);
    
    public static void main(String[] args) {
        System.out.println("Debugging...");
        
        //getAccessToken();
        PaymentResponseRoot prr = createPayment("Teste", 1, "BR", 10);
        System.out.println(prr.response.init_point);
    }
    
    public static PaymentResponseRoot createPayment(String title, int qty, String currencyId, double price) {        
        JSONObject createPreferenceResult;
        PaymentRequest paymentRequest = new PaymentRequest();
        PaymentItem payment = new PaymentItem(title, qty, currencyId, price);
        paymentRequest.items.add(payment);
        try {
            createPreferenceResult = mp.createPreference(gson.toJson(paymentRequest));
            return gson.fromJson(createPreferenceResult.toString(), PaymentResponseRoot.class);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }
}

class PaymentRequest {
    ArrayList<PaymentItem> items = new ArrayList<PaymentItem>();
}

class PaymentItem {
    public String id;
    public String title;
    public String description;
    public String category_id;
    public String picture_url;
    public String currency_id;
    public int quantity;
    public double unit_price;
    
    public PaymentItem(String title, int quantity, String currency_id, double unit_price) {
        this.title = title;
        this.quantity = quantity;
        this.currency_id = currency_id;
        this.unit_price = unit_price;
    }
}

class PaymentResponseRoot {
    public int status;
    public PaymentResponse response;
}

class PaymentResponse {
    public int collector_id;
    public String operation_type;
    ArrayList<PaymentItem> paymentItems;
    BackUrls back_urls;
    String auto_return;
    PaymentMethods payment_methods;
    int client_id;
    String marketplace;
    String marketplace_fee;
    Shipments shipments;
    String notification_url;
    String external_reference;
    String additional_info;
    boolean expires;
    String expiration_date_from;
    String expiration_date_to;
    String date_created;
    String id;
    String init_point;
    String sandbox_init_point;
}

class Payer {
    String name;
    String surname;
    String email;
    String date_created;
    Phone phone;
    Identification identification;
    Address address;
}

class Phone {
    String area_code;
    String number;
}

class Identification {
    String type;
    String number;
}

class Address {
    String street_name;
    String street_number;
    String zip_code;
}

class BackUrls {
    String success;
    String pending;
    String failure;
}

class PaymentMethods {
    ArrayList<PaymentMethod> excluded_payment_methods;
    ArrayList<PaymentType> excluded_payment_types;
    String installments;
    String default_payment_method_id;
    String default_installments;
}

class Shipments {
    ShipmentAddress receiver_address;
}

class ShipmentAddress {
    String zip_code;
    String street_number;
    String street_name;
    String floor;
    String apartment;
}
class PaymentMethod {
    String id;
}

class PaymentType {
    String id;
}