Article directory
Interface Design Specification
The interface design specifications for front-end and back-end separation can refer to the following points:
RESTful API design style: RESTful API is an API design style based on the HTTP protocol, which includes using HTTP verbs (GET, POST, PUT, DELETE, etc.) to represent operations on resources, using URIs to represent resource paths, and using HTTP status code to indicate the result of the request, etc. This design style can make the interface design more concise and clear.
Interface version control: In order to ensure the compatibility and maintainability of the interface, the interface should be version controlled. You can add a version number to the URI, or use an HTTP header to indicate the version information.
Parameter transmission method: The interface design should specify the parameter transmission method, including GET, POST, PUT, DELETE, etc., as well as the parameter format (JSON, XML, form, etc.).
Return result format: The interface return result should use a unified format, including status code, error message, data, etc. The JSON format is recommended as it can represent complex data structures well.
Security considerations: Security issues should be considered in interface design, including identity verification, interface authority control, data encryption, etc.
Interface example:
Assuming there is a user management system, the front end needs to implement functions such as user list, user details, adding users, modifying users, and deleting users, and the back end provides corresponding interfaces.
User list interface:
Request method: GET
URI：/api/v1/users
Parameters: None
return result:
{ "code": 200, "message": "success", "data": [ { "id": 1, "name": "Zhang San", "age": 20, "gender": "male" } , { "id": 2, "name": "Lisi", "age": 25, "gender": "female" } ] }
User details interface:
Request method: GET
URI：/api/v1/users/{id}
Parameters: id (user ID)
return result:
{ "code": 200, "message": "success", "data": { "id": 1, "name": "Zhang San", "age": 20, "gender": "male" } }
Added user interface:
Request method: POST
URI：/api/v1/users
parameter:
{ "name": "Wang Wu", "age": 30, "gender": "male" }
return result:
{ “code”: 200, “message”: “success”, “data”: { “id”: 3 } }
Modify the user interface:
Request method: PUT
URI：/api/v1/users/{id}
parameter:
{ "name": "Wang Wu", "age": 35, "gender": "male" }
return result:
{ “code”: 200, “message”: “success”, “data”: null }
Delete user interface:
Request method: DELETE
URI：/api/v1/users/{id}
Parameters: id (user ID)
return result:
{ “code”: 200, “message”: “success”, “data”: null }