Generic JavaBeans Validation

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External

Internal

Overview

This article documents an executable Java example that shows how to use JavaBeans Validation annotations to externalize validation logic to a JavaBeans validation provider. This example depends on Spring Boot only because we use Spring Boot's machinery to pull starter dependencies, including Hibernate Validator, which will be used as validation provider, and get our runtime running. However, there is nothing Spring-specific that would prevent the same example working in a generic Java environment with JSR-303 support.

dependencies {
    implementation('org.springframework.boot:spring-boot-starter-validation')
}

Playground Example

GitHub Generic JavaBeans Validation Example

Approach

Declare Validation Rules

Instantiate a Validator

Validate and Handle Constraint Violations