Spring boot 3.0.0+ @Override error in ResponseEntityExceptionHandler

Question

I am following this example (Validate Request Body and Parameter in Spring Boot in medium) and this example to implement a Handler to handle the correctness of a JSON as a parameter. The concepts are somewhat clear but having reached this point the use of @Override for the handleMethodArgumentNotValid method gives me an error like: Method does not override method from its superclass.

I have searched online to figure out how to solve this problem but I am probably missing something.

package com.tericcabrel.hotel.exceptions;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import org.springframework.context.support.DefaultMessageSourceResolvable;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;

@ControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
  @Override
  protected ResponseEntity<Object> handleMethodArgumentNotValid(
      MethodArgumentNotValidException ex, HttpHeaders headers,
      HttpStatus status, WebRequest request) {

    Map<String, List<String>> body = new HashMap<>();

    List<String> errors = ex.getBindingResult()
        .getFieldErrors()
        .stream()
        .map(DefaultMessageSourceResolvable::getDefaultMessage)
        .collect(Collectors.toList());

    body.put("errors", errors);

    return new ResponseEntity<>(body, HttpStatus.BAD_REQUEST);
  }
}

Answer 1

I report the solution if possibly other people follow the tutorial. In the official documentation the method (ResponseEntityExceptionHandler) reports the class HttpStatusCode and not HttpStatus

Answer 2

I had a similar problem today.

I've solved it NOT extending from ResponseEntityExceptionHandler, replacing the @Override annotation with @ExceptionHandler(MethodArgumentNotValidException.class), and removing the parameters headers and status from the method.

I didn't try your particular code. Maybe you have to modify it a little bit, but basically you should write something like this:

@ControllerAdvice
public class GlobalExceptionHandler {
    
    @ExceptionHandler(MethodArgumentNotValidException.class)
    protected ResponseEntity<Object> handleMethodArgumentNotValid(
        MethodArgumentNotValidException ex, WebRequest request) {

        Map<String, List<String>> body = new HashMap<>();

        List<String> errors = ex.getBindingResult()
            .getFieldErrors()
            .stream()
            .map(DefaultMessageSourceResolvable::getDefaultMessage)
            .collect(Collectors.toList());

        body.put("errors", errors);

        return new ResponseEntity<>(body, HttpStatus.BAD_REQUEST);
    }
}