Spring Rest -

: Implement a global exception handler (using @ControllerAdvice ) to return consistent error responses when a POST fails. Consuming POST Services

To build a solid POST endpoint, you generally use several key annotations and classes: Spring REST

: Maps the incoming HTTP request body directly to a Java object, automatically handling deserialization (usually from JSON) via libraries like Jackson . Spring REST

Spring's RequestBody and ResponseBody Annotations - Baeldung Spring REST