Spring Full-Stack Practical Cases

Sep 22, 2026 · Backend Development

Dynamic Field Validation in Spring Boot via @DynamicValid and Argument Resolver

This article demonstrates how to implement per-endpoint dynamic field validation in Spring Boot 3.5.0 using a custom @DynamicValid annotation and HandlerMethodArgumentResolver, allowing flexible control over required, optional, and unknown fields for Map, JsonNode, or POJO parameters, with support for custom validators and integration with @Validated.