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.
Mô tả
The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
Khi bạn thấy mã này
After successfully creating a new user, post, order, or other resource via a REST API.
Cách khắc phục
No fix needed. Check the Location header for the URL of the new resource.
Mô tả
The server cannot process the request due to malformed syntax, invalid request message framing, or deceptive request routing.
Khi bạn thấy mã này
When sending malformed JSON, missing required fields, or invalid query parameters.
Cách khắc phục
Check the request body format, validate all required fields, and ensure proper encoding.
Sự khác biệt chính
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.
Khi nào dùng cái nào
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.