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LetsGit.IT/Categories/Spring
Springmedium

What does `@Valid` do in Spring and where does validation run?

Tags
#validation#bean-validation#jakarta#spring
Back to categoryPractice quiz

Answer

`@Valid` triggers Bean Validation (Jakarta Validation) for a request body/parameter based on annotations like `@NotNull`, `@Size`. Validation runs on the server, before your controller method fully processes the object; errors map to 400 responses (often via exception handlers).

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