Imagine you are developing a Spring Boot application where you need to validate incoming request payloads against a complex business rule. How would you approach implementing such a validation?

  • Use custom validation annotations.
  • Implement validation logic in a filter or interceptor.
  • Embed validation logic in the data access layer.
  • Use a third-party validation library.
When dealing with complex validation rules in a Spring Boot application, one effective approach is to use custom validation annotations. This allows you to define and apply custom validation logic directly to your model classes, keeping your code clean and maintainable. While the other options may work for simpler scenarios, they are less suitable for complex business rule validation.
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