Spring boot 如何验证无界通配符元素？

我正在用

springbootstarterweb:2.1.6.RELEASE

编写一个代码，该版本依赖于

hibernate验证程序：6.0.17

我得到了以下错误

java.lang.IllegalArgumentException: HV000116:
    type is not a reference type: ? extends java.math.BigDecimal

从

---

你的用法是正确的。我认为这可能是一个实现错误

查看hibernate如何解析类型引用：

因此，当hibernate尝试验证列表的内容时，断言失败（原因是

）

但不知何故，对通配符类型的支持：

public static Type getErasedType(Type type) {
    ...
    if ( type instanceof WildcardType ) {
        Type[] upperBounds = ( (WildcardType) type ).getUpperBounds();

        return getErasedType( upperBounds[0] );
    }
    ...
}

---

我将尝试就此打开一个问题。

您可以添加完整的stacktrace吗？“那会很有帮助的。”吉洛梅斯特，随你的便，伙计！同意。不完全确定修复将是什么，但它看起来确实像是一个我们应该支持的案例。我创造了。

java.lang.IllegalArgumentException: HV000116: type is not a reference type: ? extends java.math.BigDecimal
    at org.hibernate.validator.internal.util.Contracts.assertTrue(Contracts.java:73)
    at org.hibernate.validator.internal.util.TypeHelper.getErasedReferenceType(TypeHelper.java:193)
    at org.hibernate.validator.internal.metadata.core.MetaConstraints.addValueExtractorDescriptorForWrappedValue(MetaConstraints.java:82)
    at org.hibernate.validator.internal.metadata.core.MetaConstraints.create(MetaConstraints.java:55)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.createTypeArgumentMetaConstraint(AnnotationMetaDataProvider.java:795)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.lambda$findTypeUseConstraints$2(AnnotationMetaDataProvider.java:783)
    at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
    at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1654)
    at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658)
    at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:274)
    at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
    at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findTypeUseConstraints(AnnotationMetaDataProvider.java:784)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findTypeArgumentsConstraints(AnnotationMetaDataProvider.java:762)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findTypeAnnotationConstraintsForExecutableParameter(AnnotationMetaDataProvider.java:716)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getParameterMetaData(AnnotationMetaDataProvider.java:429)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findExecutableMetaData(AnnotationMetaDataProvider.java:300)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getMetaData(AnnotationMetaDataProvider.java:285)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getMethodMetaData(AnnotationMetaDataProvider.java:272)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.retrieveBeanConfiguration(AnnotationMetaDataProvider.java:134)
    at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getBeanConfiguration(AnnotationMetaDataProvider.java:124)
    at org.hibernate.validator.internal.metadata.BeanMetaDataManager.getBeanConfigurationForHierarchy(BeanMetaDataManager.java:232)
    at org.hibernate.validator.internal.metadata.BeanMetaDataManager.createBeanMetaData(BeanMetaDataManager.java:199)
    at org.hibernate.validator.internal.metadata.BeanMetaDataManager.getBeanMetaData(BeanMetaDataManager.java:166)
    at org.hibernate.validator.internal.engine.ValidatorImpl.validateParameters(ValidatorImpl.java:265)
    at org.hibernate.validator.internal.engine.ValidatorImpl.validateParameters(ValidatorImpl.java:233)
    at org.springframework.validation.beanvalidation.MethodValidationInterceptor.invoke(MethodValidationInterceptor.java:112)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)

public static Class<?> getErasedReferenceType(Type type) {
    Contracts.assertTrue( isReferenceType( type ), "type is not a reference type: %s", type );
    return (Class<?>) getErasedType( type );
}

private static boolean isReferenceType(Type type) {
    return type == null
            || type instanceof Class<?>
            || type instanceof ParameterizedType
            || type instanceof TypeVariable<?>
            || type instanceof GenericArrayType;
}

public static Type getErasedType(Type type) {
    ...
    if ( type instanceof WildcardType ) {
        Type[] upperBounds = ( (WildcardType) type ).getUpperBounds();

        return getErasedType( upperBounds[0] );
    }
    ...
}