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GET
/
api
/
categories
/
{id}
Get Category
curl --request GET \
  --url https://api.example.com/api/categories/{id}
{
  "success": true,
  "timestamp": "<string>",
  "data": {
    "id": 123,
    "name": "<string>"
  },
  "message": "<string>",
  "error": {}
}

​
Endpoint

GET /api/categories/{id}

​
Authentication

No authentication required. This is a public endpoint.

​
Path Parameters

​
id
long
required
The unique identifier of the category to retrieve

​
Response

​
success
boolean
required
Indicates if the request was successful
​
timestamp
string
required
ISO 8601 timestamp of the response
​
data
object
required
The category object
​
id
long
required
Unique identifier for the category
​
name
string
required
Name of the category
​
message
string
Optional message
​
error
object
Error details (null on success)

​
Example Request

curl -X GET "http://localhost:8080/api/categories/1"

​
Example Response

​
Success (200 OK)

{
  "success": true,
  "timestamp": "2026-03-03T10:30:00Z",
  "data": {
    "id": 1,
    "name": "Fiction"
  },
  "message": null,
  "error": null
}

​
Error - Category Not Found (404)

{
  "success": false,
  "timestamp": "2026-03-03T10:30:00Z",
  "data": null,
  "message": null,
  "error": {
    "message": "Category not found with id: 999",
    "details": []
  }
}

​
Source Code Reference

Controller: apps/spring-boot-app/src/main/java/me/seyrek/library_management_system/category/controller/CategoryController.java:30

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