PayPal快速结帐,PayPal Express Checkout SOAP API

Payment Solution using PayPal Express Checkout SOAP API

I've just implemented a payment solution using PayPal Express Checkout with the SOAP

API. Since PayPal - and especially the SOAP API - is not trivial, I thought I would share

some of the implementation details with you.

I, like every other developer out there, started out by going to the PayPal site

-%paypal.com. You then click the "Business" tab and select the "Products & Services" link.

Well, what will you find - not more than 6 different%web-site payment%solutions. There is a

lot of documentation and information about each PayPal offering, and in addition you

integrating PayPal%into custom shopping carts. I.e, you are a developer who

has%implemented a custom shopping cart and you now want to implement a payment

solution using PayPal.

Why do I not talk about the other PayPal payment solutions. Well, there are plenty of

really good web sites out there that does exactly that .

This document%is divided into the following sections:

Getting Started with PayPal

Setting up the PayPal API

PayPal Express Checkout

Program Examples using the SOAP API

and seller accounts) using the "Create a preconfigured buyer og seller account" link. You

will need both for testing. The personal account is used by ýou as the customer, while the

business account is used by you as the store owner (merchant).

If you go to%http://sandbox.paypal.com%without being logged in with your developer

account, you will see the following screen instructing you to log in to your developer

account.

Setting up the PayPal API

The PayPal API contains a vast number of methods for performing transactions, issue

refund, browsing history of transactions, update payment profiles, and so on. See

the%PayPal API Reference%for more information. So how do you start using the API. Well,

6. Select API Signature or API Certificate

As I find the API Signature easier to set up, I recommend that you use this setting.%The

discussion in this document assumes this choice.

%

Now that you have the credentials for making API calls, you are ready to add the Web

Service Reference tohttps://www.paypalobjects.com/wsdl/PayPalSvc.wsdl. After a few

moments, you'll have an up-to-date class ready to serve you with all the benefits of

strong typing - no building of HTTP requests, no copy-pasting field names, and no

cumbersome parsing of responses. You have the same thing available for Sandbox

at:%https://www.sandbox.paypal.com/wsdl/PayPalSvc.wsdl.

1. Right-click on the root item in Solution Explorer

2. Select "Add Web Reference"

3. Enter either the sandbox URL or the production URL in the pop-up window

4. The system will then load the PayPal Web Reference for you - one for the