How to Standardize Error Responses with Problem Details (RFC 9457) in Spring Boot 3.x
Learn how to unify error responses using Problem Details (RFC 9457), now supported out of the box in Spring Boot 3.x. This guide covers the spring.mvc.problemdetails.enabled setting, how to use the ProblemDetail class and ErrorResponse, integrating @ControllerAdvice with ResponseEntityExceptionHandler, migration steps from Spring Boot 2.x, and applying Problem Details to Spring Security and validation errors, all with code examples.