HTTP 201 Created vs 400 Bad Request
HTTP 201 (Created) is a 2xx Success response, while 400 (Bad Request) is a 4xx Client Error response. 201 indicates that the request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity. In contrast, 400 means that the server cannot process the request due to malformed syntax, invalid request message framing, or deceptive request routing.
Descripción
The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
Cuándo lo verás
After successfully creating a new user, post, order, or other resource via a REST API.
Cómo solucionarlo
No fix needed. Check the Location header for the URL of the new resource.
Descripción
The server cannot process the request due to malformed syntax, invalid request message framing, or deceptive request routing.
Cuándo lo verás
When sending malformed JSON, missing required fields, or invalid query parameters.
Cómo solucionarlo
Check the request body format, validate all required fields, and ensure proper encoding.
Diferencias clave
201 is a 2xx Success response, while 400 is a 4xx Client Error response.
HTTP 201: The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
HTTP 400: The server cannot process the request due to malformed syntax, invalid request message framing, or deceptive request routing.
You encounter 201 when after successfully creating a new user, post, order, or other resource via a REST API.
You encounter 400 when when sending malformed JSON, missing required fields, or invalid query parameters.
Cuándo usar cada uno
For 201 (Created): No fix needed. Check the Location header for the URL of the new resource. For 400 (Bad Request): Check the request body format, validate all required fields, and ensure proper encoding.