PayPal Express Checkout - 2012 Guia do Utilizador descarregar pdf (Página 20)

Getting Started With Express Checkout

Implementing the Simplest Express Checkout Integration

20 August 7, 2012 Express Checkout Integration Guide

METHOD=DoExpressCheckoutPayment

VERSION=XX.0

2. Specify your API credentials.

Use the following parameters for a signature:

USER=API_username

PWD=API_password

SIGNATURE=API_signature

3. Specify the token returned by PayPal when it redirects the buyer’s browser to your site.

PayPal returns the token to use in the token HTTP request parameter when redirecting to

the URL you specified in your call to the SetExpressCheckout API.

TOKEN=tokenValue

4. Specify the Payer ID returned by PayPal when it redirects the buyer’s browser to your site.

PayPal returns the Payer ID to use in the token HTTP request parameter when redirecting

to the URL you specified in your call to the SetExpressCheckout API. Optionally, you

can obtain the Payer ID by calling the GetExpressCheckoutDetails API.

PAYERID=id

5. Specify the amount of the order including shipping, handling, and tax; include the currency

if it is not in US dollars.

Most of the time, this will be the same amount as you specified in your

SetExpressCheckout call, adjusted for shipping and taxes.

PAYMENTREQUEST_0_AMT=amount

PAYMENTREQUEST_0_CURRENCYCODE=currencyID

6. Specify the same payment action that you specified in SetExpressCheckout.

PAYMENTREQUEST_0_PAYMENTACTION=Sale

Testing an Express Checkout Integration

You can test your Express Checkout integration in the Sandbox.

This example shows how to simulate your web pages using HTTP forms and supplying the

values for API operations from these forms. You can use this strategy for your initial testing;

however, for more complete testing, you need to replace these forms with your web pages

containing your actual code.

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PayPal Express Checkout - 2012 Guia do Utilizador Página 20