Must-Know Spring Boot Features

Spring Boot is a powerful Java-based framework that provides a wealth of tools and features for building powerful and extensible applications. However, with so many features on offer, it can be difficult to know where to start. In this article, we will help you effectively implement them in your project.

How to handle exceptions in Spring Boot applications

When an exception occurs in a Spring Boot application, it needs to be handled appropriately to ensure that the application does not crash. There are several ways to handle exceptions, including using the @ExceptionHandler annotation to define methods for handling specific exceptions. In addition, you can use the predefined exception handling methods provided by the ResponseEntityExceptionHandler class.

@ControllerAdvice
public class ExceptionHandlerController {
@ExceptionHandler(Exception.class)
  public ResponseEntity<String> handleException(Exception ex) {
    return new ResponseEntity<>("An error occurred: " 
              + ex.getMessage(), HttpStatus.INTERNAL_SERVER_ERROR);
  }
}

In this example, the handleException method takes an Exception object as its argument and returns a ResponseEntity object. The ResponseEntity object contains an error message and an HTTP status code, set to 500 Internal Server Error in this example.

You can customize the exception handling logic by modifying the handleException method to handle a specific type of exception or by returning…