How to use Alipay payment function in uniapp

How to use Alipay payment function in uniapp

Alipay is one of the largest mobile payment platforms in China. In order to facilitate developers to use Alipay payment function in uniapp, Alipay provides a set of convenient API interfaces. This article will introduce how to use Alipay payment function in uniapp and provide corresponding code examples.

1. Apply for an Alipay Open Platform Account and Key
First, you need to apply for a developer account on the Alipay Open Platform and obtain the corresponding AppID and key. The specific steps are as follows:
1. Visit the Alipay open platform website and select "Developer Center".
2. Click the "Access Now" button and fill in the relevant information according to the process to register an account.
3. After successful registration, log in to the Alipay open platform console.
4. Click the "Application" tab and select the "Create Application" button.
5. Fill in the basic information of the application, including application name, application type, etc., and select the corresponding service interface.
6. After successful creation, you can find the generated AppID and key on the "Application Information" page.

2. Configure the uniapp project
To use the Alipay payment function in the uniapp project, we need to configure the following:
1. In the manifest.json file of the project, find the "App" node under The "dev" and "prod" fields are respectively set to the AppID generated by the Alipay open platform.
2. In multi-terminal development, if you need to use Alipay payment function in a mini program, you also need to find the "appid" field under the "mp-alipay" node in the manifest.json file and set it to Alipay open platform Generated AppID.

3. Use the Alipay payment function
To use the Alipay payment function in uniapp, we need to use the uni.getProvider interface to determine whether the Alipay payment function is supported. The code example is as follows:

uni.getProvider({ service: 'payment', success: function (res) { if (~res.provider.indexOf('alipay')) { // 支付宝支付功能可用 // 进行支付请求 uni.requestPayment({ provider: 'alipay', orderInfo: '支付宝获得的订单信息', success: function (res) { console.log('支付成功'); }, fail: function (err) { console.log('支付失败', err); } }) } }, fail: function (err) { console.log('暂不支持支付宝支付'); } })

In the above In the code example, first determine whether the payment function is supported through the uni.getProvider interface, and check whether Alipay payment is supported. If the Alipay payment function is available, use the uni.requestPayment interface to initiate a payment request. Among them, the orderInfo parameter is the order information obtained by Alipay. The success callback function will be executed after successful payment, and the fail callback function will be executed after failure.

It should be noted that Alipay’s order information needs to be generated based on actual business logic, and the validity and security of the order information need to be ensured. For the specific order information generation and verification process, please refer to the documents provided by Alipay Open Platform.

4. Summary
This article introduces the steps of using Alipay payment function in uniapp and provides corresponding code examples. Through the above steps, you can easily integrate Alipay payment function in the uniapp project to realize the convenience and security of mobile payment. I hope this article is helpful to you, and I wish you success in project development!

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