安全上下文
此特征只可用于
安全上下文
(HTTPS)，在某些或所有
支持浏览器
.
草案
此页面不完整。
支付请求 API makes it easy to handle payments in a web site or app. In this article, we'll take a look at how the API operates and what each of its components does.
Before getting into the details of how the API operates, there are tems you'll need to know.
The merchant—either a person or an organization—whose web site or app wishes to receive money through the Payment Request API.
The person or organization making a purchase using a web site or app. The payer authenticates themselves, then authorizes payment, as required by the payment method.
The instrument by which payment is submitted, such as a credit card or online payment service.
An organization that provides the technology needed to submit payments using a given payment method. For example, when using a credit card to pay, the credit card processing service is the payment method provider.
The implementation of the code needed to interface with a particular payment method provider in order to process payments.
Some payment handlers use merchant validation , which is the process of validating the identity of a merchant in some way, usually using some form of cryptographic response such as a public key. Validated merchants are allowed to interface with a payment handler.
Payment handlers are identified by payment method identifiers , which are strings uniquely identifying the payment handler. These may be either one of the standardized payment handler identifiers, or a URL used by the payment processing service to both identify itself and to handle payments.
There is currently only one registered standardized payment method identifier (more may be added in the future):
basic-card
BasicCardRequest
了解细节。
Should have an article about this specification and how to use it
.
These may vary substantially depending on the specifics of the service, and a given processing service may have multiple URLs used, depending on the version of their API, their communication technology, and so forth.
https://apple.com/apple-pay
https://google.com/pay
A 用户代理 may provide built-in support for certain types of payments. In addition, the Payment Handler API can be used to establish support for additional payment method providers, in browsers that support it. In either case, the payment handler is responsible for:
Some payment handlers use merchant validation , which is the process of validating the identity of a merchant in some way, usually using some form of cryptographic challenge. If the merchant doesn't successfully validate, it's not allowed to use the payment handler.
The exact validation technology depends on the payment handler, and merchant validation is entirely optional. In the end, the only thing that the web site or app is responsible for is fetching the merchant's validation key and passing it into the event's
complete()
方法。
paymentRequest.onmerchantvalidation = function(event) {
event.complete(fetchValidationData(event.validationURL));
}
在此范例中，
fetchValidationData()
is a function which loads the payment handler specific identifying information from the address given by
validationURL
. Note this function must go through the merchant server, because a client typically does not access the validation URL itself.
By then delivering this data (or a
Promise
which resolves to the loaded data) to the payment handler by passing it into
complete()
, the payment handler can use the retrieved data and whatever algorithm and other data to support in order to verify that the merchant can use the payment handler.
Thus, it's important to note that the
用户代理
never sends a
merchantvalidation
event, unless the user agent itself implements a payment handler. For instance, Safari has integrated support for Apple Pay, so the Apple Pay payment handler uses this to ensure that Apple Pay can be used to pay the merchant by sending
merchantvalidation
to the client, instructing it to fetch the server's validation data and deliver it to the payment handler by calling
complete()
.
| 规范 | 状态 | 注释 |
|---|---|---|
| 支付请求 API | 候选推荐 | 初始定义。 |
| Basic Card Payment | 工作草案 |
定义
BasicCardRequest
and
BasicCardResponse
.
|
| Payment Method Identifiers | 候选推荐 | Defines payment method identifiers and how they are validated, and, where applicable, minted and formally registered with the W3C. |