Advanced Error Handling in Spring Boot with @ControllerAdvice

Error handling is a critical aspect of any robust application. Spring Boot provides various mechanisms to handle exceptions gracefully, one of which is @ControllerAdvice. This powerful annotation allows you to centralize exception handling logic, making your application more maintainable and user-friendly. In this article, we'll explore how to use @ControllerAdvice for advanced error handling in Spring Boot.

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Setting Up the Project

Start by creating a new Spring Boot project using Spring Initializr with the following dependencies:

• Spring Web

Defining Custom Exceptions

First, define a couple of custom exceptions that our application might throw.

public class UserNotFoundException extends RuntimeException {
    public UserNotFoundException(String message) {
        super(message);
    }
}

public class InvalidUserException extends RuntimeException {
    public InvalidUserException(String message) {
        super(message);
    }
}

Creating an Exception…