Imagine you are working on a large Spring Boot application with numerous controllers, and you need to ensure consistent handling of validation errors across all controllers. How would you approach this?

  • Define custom error pages for validation errors in the application's HTML or Thymeleaf templates. Configure the controllers to redirect to these error pages when validation errors occur, ensuring a consistent user experience.
  • Implement a global exception handler by creating a custom exception handler class annotated with @ControllerAdvice and define methods to handle validation-related exceptions. Configure the application to use this global exception handler to ensure consistent handling of validation errors across all controllers.
  • Manually handle validation errors in each controller method by using try-catch blocks and returning appropriate error responses. Maintain consistency by following a standardized error response structure in each controller method.
  • Use Spring Boot's built-in global validation error handling, which automatically handles validation errors and returns standardized error responses without the need for explicit exception handling in controllers. Customize the error messages and response format as needed in the application properties.
To ensure consistent handling of validation errors across all controllers in a Spring Boot application, you should implement a global exception handler using @ControllerAdvice. This allows you to define methods to handle validation-related exceptions consistently across the application.
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