API： The main purpose is to provide the ability for applications and developers to access a set of routines , Without having to access the source code or understand the details of the internal working mechanism .
Provide API The software of the defined function is called this API The implementation of the .
API It's a port , It's also an abstraction . Application program interface （ English ：ApplicationProgrammingInterface, abbreviation ：API）, Also known as application programming interface , It is the agreement of linking different components of the software system . Due to the increasing scale of software in recent years , It is often necessary to divide a complex system into small components , The design of programming interface is very important . In the practice of programming , The design of programming interface must first make the responsibility of software system reasonably divided . Good interface design can reduce the interdependence of each part of the system , Improve the cohesion of the constituent units , Reduce the coupling between components , So as to improve the maintainability and expansibility of the system .
Demonstration entrance ： https://www.wapi.cn/api_diy.html
Api Customization process ：
First step ： Put forward requirements
The second step ： Assess needs
The third step ： Implement collection
Step four ： Payment data
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