When Spring Boot finds a method argument annotated with automatically bootstraps the Hibernate Validators and validates the argument. In all Spring Boot versions below version 2.2, Validations starter is part of web starter Annotation We need to add following dependency to spring boot project to auto configure validation feature in Spring Boot application. Several useful custom constraints which are listed below can find more information about built-in validators from the official documentation Add Dependency ![]() In addition to the constraints defined by the Jakarta Bean Validation API, Hibernate Validator provides Jakarta Bean Validation constraints max=) Additionally, Hibernate Validator also provides useful custom constraints. The Jakarta Bean Validation standard defines the first set of validations. Hibernate Validator comes with a standard set of validators. Spring Boot auto configures validation feature supported by Bean Validation as long as a JSR-303 implementation (such as Hibernate validator) is on the class path. You can be more confident that the data you are receiving is exactly what you expect it to be. Validated requests for data make your life easier. ![]() ![]() We will also show you how to use the validation starter to include validation in your project. We’ll also take a look at how we can use validation groups to invoke different validations in different use cases. With Spring Boot, you can quickly add validation to your existing classes with minimal effort. Spring Boot offers comprehensive support for Request validation using the Bean Validation specification.
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