如何在Spring Boot中正确覆盖handleMethodArgumentNotValid

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;

@RestControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {

    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ResponseEntity<Object> handleMethodArgumentNotValid(MethodArgumentNotValidException ex) {
        BindingResult bindingResult = ex.getBindingResult();
        FieldError fieldError = bindingResult.getFieldError();
        String errorMessage = fieldError.getDefaultMessage();
        // 根据实际需求进行处理，例如返回自定义的错误提示信息、返回指定的错误状态码等
        return ResponseEntity.badRequest().body(errorMessage);
    }
}