Request Validation in Spring boot using Annotation with Global Exception Handling | Code Decode

In this code decode video, we've illustrated global exception handling in a Spring Boot application, emphasizing how it integrates with request validation.

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Request validation in Spring Boot ensures incoming data adheres to defined constraints, using annotations like @RequestParam, @PathVariable, and @RequestBody. For instance, you can validate a POST request's JSON payload with a DTO class annotated with @Valid and validation annotations. This ensures that data is properly formatted and meets your criteria. For global exception handling, you create a component annotated with @ControllerAdvice and use @ExceptionHandler to capture and handle exceptions. For example, you can create a method to handle validation errors like MethodArgumentNotValidException and another to manage generic exceptions. This centralized approach keeps your application robust and user-friendly, providing consistent error responses while ensuring it doesn't crash unexpectedly.


Request validation in Spring Boot is a fundamental aspect of building robust and secure web applications. It ensures that incoming data adheres to defined constraints, using validation annotations like `@Valid` and `@NotNull`. This practice helps maintain data integrity and the overall health of your application. When you handle validation errors in Spring Boot, you utilize `@ExceptionHandler` annotations to gracefully deal with issues like `MethodArgumentNotValidException` and keep your codebase clean and organized. This combination of validated annotation in Spring Boot and global exception handling ensures a consistent and user-friendly approach to handling unexpected issues. It's essential to integrate spring boot validation seamlessly into your application to provide clear responses to clients and prevent crashes. In summary, request validation in Spring Boot, empowered by the validated annotation in Spring Boot and global exception handling, enhances your application's reliability and user experience while keeping your codebase well-structured and manageable.




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