如果@Constraint（通过= {}验证），则使用Hibernate验证程序来验证约束 [英] Hibernate validator to validate constraints if @Constraint(validated by = {})

问题描述

我有一个使用休眠验证器进行验证的Spring Web应用程序。我有位于不同项目中的约束注释。在我的春季项目中，我需要针对这些约束的验证器，因为我需要一些服务来执行验证。所以情况是：我不能将约束验证器放在@Constraint（validatedBy = MyConstraintValidator.class）中，因为验证器在另一个项目中，我无法添加依赖项，因为这会创建循环依赖项，而这不是我们的方式想要它。
我注意到javax.constraints没有指定验证器，只是@Constraint（validatedBy = {}）。
但是休眠验证器仍然知道如何验证它们。
是否可以告诉我的休眠验证器如何验证约束，而无需在约束中指定constaint-validators？

I have a Spring webapplication that uses hibernate validator for validation. I have constraint annotations that are located in a different project. I need to have validators for these constraints in my spring project because I need some services to perform validation. So the situation is: I cannot place my constraint validators in @Constraint(validatedBy = MyConstraintValidator.class) because the validator is in a different project, I cannot add a dependency because that would create a cyclic dependency and it is just not the way we want it. I noticed that javax.constraints don't have validators specified, it's just @Constraint(validatedBy= {}). But hibernate validator still knows how to validate them. Is there a way to tell my hibernate validator how to validate my constraints without specifying constaint-validators in my constraints?

我希望能够验证此约束：

I hope be able to validate this constraint:

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
@Constraint(validatedBy = {})
public @interface OneOf {

    String message() default "{OneOf}";

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

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

谢谢！

推荐答案

javax.validation.constraints 将验证器留给实现。 Hibernate为这些约束提供验证器，并在引导时注册它们。

The javax.validation.constraints leaves the validators to the implementation. Hibernate provides validators to these constraints, and registers them when bootstrapping.

您可以通过XML设置验证器，而无需使用 @Constraint（validatedBy = {}）。但是，这通常用于添加/替换您自己提供的验证器。我不确定它会如何帮助您，因为您仍然需要引用约束验证器。

You can set the validators via XML without using @Constraint(validatedBy = { }). However, this is usually used to add to/replace the provided validators with your own. I'm not sure how it will help you since you still need to reference the constraint validator.

使用XML约束定义的示例：

Example of using XML constraint definition:

<constraint-definition annotation="org.mycompany.CheckCase">
    <validated-by include-existing-validators="false">
        <value>org.mycompany.CheckCaseValidator</value>
    </validated-by>
</constraint-definition>

请参阅：通过XML配置

即将推出的5.2版本提供其他方式，例如使用服务加载程序或实现 ConstraintDefinitionContributor 。请参阅：提供约束定义

The upcoming 5.2 release provides more ways such as using a service loader or implementing ConstraintDefinitionContributor. See: Providing constraint definitions

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