공식문서

1. Validation Using Spring’s Validator Interface
2. Data Binding

3. Resolving Error Codes to Error Messages

4. Spring Type Conversion

5. Spring Field Formatting : 필드 포멧 설정하고 검증 진행하는 법

6. Configuring a Global Date and Time Format
7. Java Bean Validation

https://docs.spring.io/spring-framework/reference/core/validation.html