Introduction
This article mainly introduces the integration and use of server-side SDK, the process logic of WeChat payment, the security principle of WeChat payment, and introduces some preparations before developing WeChat payment.
Preparations before connecting to WeChat payment
Before officially accessing the WeChat Pay applet payment service, the following preparation steps need to be carried out:
- Select access mode: ordinary merchant or ordinary service provider
- Application parameters: AppID (after registering for the WeChat applet, you can get the appid), merchant number (after registering and applying for a merchant number, you can view the merchant number in the merchant platform - "Account Management")
- Configure application: binding of appid and merchant number
The specific steps for the above three points have been explained in the previous section.
Integrate WeChat payment server SDK
In order to help developers call open interfaces, WeChat officially provides development libraries in three language versions: JAVA, PHP, and GO, which encapsulate basic functions such as signature generation, signature verification, sensitive information encryption/decryption, and media file upload.
Using WeChat Pay SDK, you will experience the following advantages:
- Quick access: The SDK encapsulates logic such as interface requests and signature verification. Developers only need to simply call the classes and methods provided by the SDK to complete access, without having to deal with underlying logic such as signature verification and network requests.
- Improve code quality: The SDK was designed with ease of use, security, and scalability in mind, and after multiple iterations of optimization and rigorous testing, it can help developers avoid some common errors and security vulnerabilities and improve code quality.
- Convenient upgrade and maintenance: When the WeChat payment interface is upgraded, developers only need to update the SDK to use the new interface without modifying the business.