Chapter3 save taco get a errot

[ljygod]

when i insert taco to table，get this error
java.lang.IllegalArgumentException: Can not set java.lang.String field com.example.tacocloud.domain.Ingredient.id to java.lang.String

[javaswing]

@ljygod
You need create the Class, in web package

/**
 * 根据ID转换为对象
 */
@Component
public class IngredientByIdConverter implements Converter<String, Ingredient> {
    private IngredientRepository ingredientRepo;

    @Autowired
    public IngredientByIdConverter(IngredientRepository ingredientRepo) {
        this.ingredientRepo = ingredientRepo;
    }

    @Override
    public Ingredient convert(String id) {
        return ingredientRepo.findById(id);
    }

}