@javaspringboot中长类型变量的NotZero注释

如果您使用的是hibernate,请考虑使用自定义验证器: https://www.baeldung.com/spring-mvc-custom-validator

注释定义:

@Documented
@Constraint(validatedBy = NonZeroFloatValidator.class)
@Target( { ElementType.METHOD, ElementType.FIELD })
@Retention(RetentionPolicy.RUNTIME)
public @interface NonZeroFloatConstraint {
    String message() default "Float value is zero";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
}

验证程序逻辑:

public class NonZeroFloatValidator implements ConstraintValidator<NonZeroFloatConstraint, Float>
{    
    @Override
    public void initialize(NonZeroFloatConstraint cons) {}

    @Override
    public boolean isValid(Float f, ConstraintValidatorContext cxt)
    {
        return Float.compare(f, 0.0f) != 0;
    }
}