我想比较我的实体中的两个字段，并检查maxField是否大于minField有效。下面是我的实现，但我看不到自定义消息，而是返回400 bad request：

{
    "errors": []
}

字符串
我的dto：

@ValidMaxMinDouble(
    maxFieldName = "maxOperatingTemperature",
    minFieldName = "minOperatingTemperature",
    message =
        "Maximum operating temperature must not be less than the minimum operating temperature")
@Data
public class RequestDTO {

  @ValidDoubleRange(min = -100, max = 100, required = true)
  private Double maxOperatingTemperature;

  @ValidDoubleRange(min = -100, max = 100, required = true)
  private Double minOperatingTemperature;
}

型
这是我的validator：

@Documented
@Target({ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE,ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = ValidMaxMinDoubleValidator.class)
public @interface ValidMaxMinDouble {
  String message() default "The maximum value must be greater than or equal to the minimum value";

  Class<?>[] groups() default {};

  Class<? extends Payload>[] payload() default {};

  String maxFieldName();

  String minFieldName();

  @Target({ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE,ElementType.TYPE})
  @Retention(RetentionPolicy.RUNTIME)
  @interface List {
    ValidMaxMinDouble[] value();
  }
}

class ValidMaxMinDoubleValidator implements ConstraintValidator<ValidMaxMinDouble, Object> {
  private String maxFieldName;
  private String minFieldName;
  private String message;

  @Override
  public void initialize(ValidMaxMinDouble constraintAnnotation) {
    this.maxFieldName = constraintAnnotation.maxFieldName();
    this.minFieldName = constraintAnnotation.minFieldName();
    this.message = constraintAnnotation.message();
  }

  @Override
  public boolean isValid(Object value, ConstraintValidatorContext context) {
    Double maxValue = (Double) new BeanWrapperImpl(value).getPropertyValue(maxFieldName);
    Double minValue = (Double) new BeanWrapperImpl(value).getPropertyValue(minFieldName);

    if (maxValue == null || minValue == null) {
      return false;
    }

    boolean valid = maxValue >= minValue;
    if (!valid && !message.isEmpty()) {
      context.disableDefaultConstraintViolation();
      context.buildConstraintViolationWithTemplate(message).addConstraintViolation();
    }

    return valid;
  }
}

型
我不知道为什么我看不到自定义错误消息。我发送的请求触发context.disabledisableDefaultConstraintViolation（）部分。