自定义验证

范围时间验证

/**
 * 范围时间验证注解
 */
@Target({ ElementType.TYPE, ElementType.FIELD, ElementType.METHOD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE, ElementType.TYPE_USE })
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = IntervalTimeCheckValidator.class)
@Documented
@Repeatable(IntervalTimeCheck.List.class)
public @interface IntervalTimeCheck {
  String[] beginProps() default {"beginTime"};
  String[] endProps() default {"endTime"};
  String message() default "开始时间不能大于结束时间 ";
  Class<?>[] groups() default {};
  Class<? extends Payload>[] payload() default {};
  @Target({ ElementType.TYPE,ElementType.FIELD,ElementType.METHOD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE })
  @Retention(RetentionPolicy.RUNTIME)
  @Documented
  @interface List {
    IntervalTimeCheck[] value();
  }
}

public class IntervalTimeCheckValidator implements ConstraintValidator<IntervalTimeCheck, Object> {
  private String[] beginProps;
  private String[] endProps;
  @Override
  public void initialize(IntervalTimeCheck constraintAnnotation) {
    this.beginProps = constraintAnnotation.beginProps();
    this.endProps = constraintAnnotation.endProps();
  }
  @Override
  public boolean isValid(Object value, ConstraintValidatorContext context) {
    BeanWrapper beanWrapper = new BeanWrapperImpl(value);
    boolean valid = true;
    for (int i = 0; i < beginProps.length; i++) {
      String beginProp = beginProps[i];
      String endProp = endProps[i];
      Object beginObjVal = beanWrapper.getPropertyValue(beginProp);
      Object endObjVal = beanWrapper.getPropertyValue(endProp);
      if (ObjectUtils.isNotEmpty(beginObjVal) && ObjectUtils.isNotEmpty(endObjVal)) {
        int result = compareDateTime(beginObjVal, endObjVal);
        if (result < 0) {
          valid = false;
          break;
        }
      }
    }
    return valid;
  }
  private int compareDateTime(Object beginObjVal, Object endObjVal) {
    int result = 0;
    if (beginObjVal instanceof LocalDateTime) {
      LocalDateTime beginDateTime = (LocalDateTime) beginObjVal;
      LocalDateTime endDateTime = (LocalDateTime) endObjVal;
      result = endDateTime.compareTo(beginDateTime);
    } else if (beginObjVal instanceof LocalDate) {
      LocalDate beginDate = (LocalDate) beginObjVal;
      LocalDate endDate = (LocalDate) endObjVal;
      result = endDate.compareTo(beginDate);
    } else if (beginObjVal instanceof Date) {
      Date beginDate = (Date) beginObjVal;
      Date endDate = (Date) endObjVal;
      result = endDate.compareTo(beginDate);
    }
    return result;
  }
}