Standard Design Practice for Backend

DO NOT directly send response body content. Instead, wrap it in a ResponseEntity object, which represents the entire HTTP response (status code, header/s, body).

1.1 Introduction to ResponseEntity

• o.s.http.ResponseEntity<T>: A generic class.
• T: Type of the response body.

1.2 o.s.http.ResponseEntity<T>

• Constructor:

  ResponseEntity(T body, HttpStatus status);
  
  

  • HttpStatus: Enum containing response status codes (1XX to 5XX).

• OR Methods:

  ResponseEntity.status(HttpStatus status).body(T body)
  
  

  • HttpStatus: Enum containing status codes from 1xx to 5xx series.