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我在 Kotlin 中编写了一个验证顾问EntityValidationException，它在验证失败时抛出：

@Aspect
@Named
class ValidationAdvisor
@Inject constructor(val validator: EntityValidator) {
    @Around(EVERY_SAVE_AND_UPDATE_TO_DATABASE)
    fun validate(point: ProceedingJoinPoint): Any {
        val result: List<ConstraintViolation<Any>> = validator.validate(getEntity(point))
        if (isEntityValid(result))
            return point.proceed()

        throw EntityValidationException(
            violationInfos = result as List<ConstraintViolationInfo>
        )
    }

    private fun getEntity(point: ProceedingJoinPoint): Any {
        return point.args[0]
    }

    private fun isEntityValid(result: List<ConstraintViolation<Any>>): Boolean {
        return result.isEmpty()
    }

    companion object {
        const val EVERY_SAVE_AND_UPDATE_TO_DATABASE = "execution(* beans.repositories.BaseRepository.save(..))"
    }
}

我有一个 JUnit 测试（我在 Kotlin 中编写了一些部分，在 Java 中编写了一些部分，以在现有的私有项目中学习 Kotlin），它检查是否引发了异常：

@Test(expected = EntityValidationException.class)
public void test_WhenNameIsNotPresent_ThenExceptionIsThrown() throws Exception {
    repository.save(/* entity to save */);
}

但后来我看到测试失败了，因为它抛出UndeclaredThrowableException而不是EntityValidationException. 接下来，我读到Kotlin 没有检查异常。我认为不仅我有这个问题——我很确定当我们决定在生产项目中切换到 Kotlin 时，在 Spring 和 Java 中使用 @ControllerAdvice 处理异常的方式也可能会出现问题——因为它依赖于抛出的类，并且扔掉UndeclaredThrowableException我们这种可能性。有没有办法绕过这种行为，以确保可以切换到 Kotlin 并且旧的Spring 处理异常的方式（和单元测试ValidationAdvisor）将保持不变？预先感谢您的任何帮助。

项目的PS Github 存储库可在此处获得：Playgroud for Kotlin、Spring Data 等。

PS2堆栈跟踪：

at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.lang.reflect.UndeclaredThrowableException
    at com.sun.proxy.$Proxy65.save(Unknown Source)
    at ActorValidationTest.test_WhenNameIsNotPresent_ThenExceptionIsThrown(ActorValidationTest.java:26)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:19)
    ... 26 more
Caused by: beans.validator.exceptions.EntityValidationException
    at beans.aop.validation.ValidationAdvisor.validate(ValidationAdvisor.kt:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:629)
    at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:618)
    at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
    ... 37 more

对我来说看起来像EntityValidationException（我想被抛出）原因UndeclaredThrowableException。 EntityValidationExceptionKotlin 类代码：

package beans.validator.exceptions

import beans.validator.constraintViolation.ConstraintViolationInfo

class EntityValidationException (val violationInfos: List<ConstraintViolationInfo>) : Exception() {
}

PS3这也没有用：

@Around(EVERY_SAVE_AND_UPDATE_TO_DATABASE)
@Throws(EntityValidationException::class)
fun validate(point: ProceedingJoinPoint): Any /* rest of code*/

PS4也许问题在于@AspectSpring @AroundData 存储库？

companion object {
        const val EVERY_SAVE_AND_UPDATE_TO_DATABASE = "execution(* beans.repositories.BaseRepository.save(..))"
    }
....
@NoRepositoryBean
public interface BaseRepository<ENTITY, IDENTIFIER extends Serializable>
        extends JpaRepository<ENTITY, IDENTIFIER>, JpaSpecificationExecutor<ENTITY> {
}
4

1 回答 1

2

您正在尝试使方法save()或存储库抛出未声明的已检查异常。所以即使方面声明了它，那也行不通。你需要让你的异常扩展RuntimeException。

于 2016-11-20T23:07:54.273 回答