ArticleExceptionHandler.java

package org.javaspringcourse.exception;

import jakarta.validation.ConstraintViolation;
import jakarta.validation.ConstraintViolationException;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.stream.Collectors;

@RestControllerAdvice
public class ArticleExceptionHandler {
    @ExceptionHandler(ConstraintViolationException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ErrorResponse handleBadGatewayException(ConstraintViolationException ex) {
        return new ErrorResponse("Неверно заполнены поля.",
                ex.getConstraintViolations().stream()
                        .collect(Collectors.toMap(
                                violation -> violation.getPropertyPath().toString(),
                                ConstraintViolation::getMessage)));
    }
}