java如何从类级注释冲突中获取属性路径

Question

我正在使用Hibernate验证程序。我有一个类级别的注释。它比较了等式的三个属性。在执行验证时，我需要从javax获取PropertyPath。验证。返回了ConstraintViolation对象。由于它不是单个字段，getPropertyPath（）方法返回null。有没有其他方法可以找到PropertyPaths

这是我的注释实现-

@MatchField.List({
@MatchField(firstField = "firstAnswer", secondField = "secondAnswer", thirdField = "thirdAnswer"),
})

Answer 1

您需要将消息设置为映射到您希望在验证时拒绝的属性。Hibernate Validator无法自动神奇地发现自定义注释属性是属性路径

public class MatchFieldValidator implements ConstraintValidator<MatchField, Object> {

  private MatchField matchField;

  @Override
  public void initialize(MatchField matchField) {
    this.matchField = matchField;
  }

  @Override
  public boolean isValid(Object obj, ConstraintValidatorContext cvc) {

    //do whatever you do
    if (validationFails) {
      cvc.buildConstraintViolationWithTemplate("YOUR FIRST ANSWER INPUT IS WRONG!!!").
                        addNode(matchField.firstAnswer()).addConstraintViolation();
      cvc.buildConstraintViolationWithTemplate("YOUR SECOND ANSWER INPUT IS WRONG!!!").
                        addNode(matchField.secondAnswer()).addConstraintViolation();
      //you get the idea
      cvc.disableDefaultConstraintViolation();
      return false;
    }
  }
}