Communication rules the world. Interaction is needed between people and between software. Do you want an adequate response to your application request? API to help you! The need to implement an API arises in almost all projects, and over time we wonder whether it is possible to improve the current API? A sequence of specific steps and real examples is our recipe for creating a working web-API of the project.
, : « API?» , . «» , . «», .
, API. , , , , Μ , API, API, API. .
, API . API, , , . !
API , .
, API
, API , :
API;
, API ;
API.
, , Β« Β» Β« Β».
API
, API:
0: URI HTTP ( POST);
1: URI HTTP ;
2: URI, Μ HTTP ;
3: HATEOAS. .
API 0 1 , , :
URI, ;
, , HTTP ;
URI Μ API;
URI ;
- URI, .
, «» , . .
, API
. API, API. , .
, , . , , .
3 API . :
URI (Uniform Resource Identifier);
;
, Accept Header/Media Type.
. API .
URI , . :
URI, URI;
URI, ;
HTTP Μ;
URI, - Μ ;
.
:
GET v1/cats/{name}
2. , HTTP β . URI.
:
GET cats/{name}?version=v1
3. Accept Header/Media Type , URI. :
, ;
, Postman, , Μ HTTP .
:
GET cats/{name}
Headers: version=v1
, . , .
API
, . API backend, frontend . , , Swagger ( RESTful API), , Swagger UI:
, API. API :
0 ( URI HTTP );
, API ;
API, API ;
, API.
, , , API.
:
POST /cats - ( ,
requestBody: { );
"name": "Pushok"
}
POST /cats - ;
requestBody: {
"color": "white"
}
API
API, . , API :
Μ ;
API;
API;
API API.
, , , , .
API
2 API. , , API.
, API 0 2 :
1. API ;
2. , : GET, POST, PUT, DELETE;
3. ;
:
GET /cats -
GET /cats/Pushok -
(, )
4. .
:
GET /cats?color=white -
API . . β β, . β2.nβ.
:
, enum:
, Spring Framework Converter<S,T>. S T, Enum ApiVersion :
β2.0β, βv2β. , , , enum. :
API Μ, Μ enum. Μ Μ , .
.
. -. API Swagger. , , , API.
. :
API , , . Swagger .
Swagger UI API:
:
API
0 API 2 , :
API, , ;
, API;
, .
, API , , , . .
API , . . ? !