GlobalExceptionHandler.java

package ru.practicum.shareit.exception;

import org.springframework.http.HttpStatus;
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;

@RestControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(NotFoundException.class)
    @ResponseStatus(HttpStatus.NOT_FOUND)
    public ErrorResponse handleNotFoundException(NotFoundException e) {
        return new ErrorResponse("Объект не найден", e.getMessage());
    }

    @ExceptionHandler(ValidationException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ErrorResponse handleValidationException(ValidationException e) {
        return new ErrorResponse("Ошибка валидации", e.getMessage());
    }

    @ExceptionHandler(AccessDeniedException.class)
    @ResponseStatus(HttpStatus.FORBIDDEN)
    public ErrorResponse handleAccessDeniedException(AccessDeniedException e) {
        return new ErrorResponse("Доступ запрещен", e.getMessage());
    }

    @ExceptionHandler(DuplicateEmailException.class)
    @ResponseStatus(HttpStatus.CONFLICT)
    public ErrorResponse handleDuplicateEmailException(DuplicateEmailException e) {
        return new ErrorResponse("Конфликт данных", e.getMessage());
    }

    @ExceptionHandler(InvalidDateTimeException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ErrorResponse handleInvalidDateTimeException(InvalidDateTimeException e) {
        return new ErrorResponse("Ошибка даты/времени", e.getMessage());
    }

    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ErrorResponse handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
        String errorMessage = e.getBindingResult().getFieldErrors().stream()
                .map(error -> error.getField() + ": " + error.getDefaultMessage())
                .findFirst()
                .orElse("Ошибка валидации");
        return new ErrorResponse("Ошибка валидации", errorMessage);
    }

    @ExceptionHandler(Exception.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public ErrorResponse handleException(Exception e) {
        return new ErrorResponse("Внутренняя ошибка сервера", e.getMessage());
    }
}