JUnit，@ControllerAdvice和缺少Kotlin中检查的异常

我在Kotlin中写了一个验证顾问 ，当验证失败时抛出EntityValidationException ：

 @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和Java中编写了一些部分，在现有的私人项目中学习Kotlin），它检查是否引发异常：

 @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，因为它会抛出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 – 我非常确定在Spring和Java中使用@ControllerAdvice处理异常的方式也可能会在我们决定在生产项目中切换到Kotlin时产生问题 – 因为它依赖于抛出的类，抛出UndeclaredThrowableException带走了我们这种可能性。 有没有办法绕过这种行为，以确保有可能切换到Kotlin和旧的 Spring处理异常的方式（和ValidationAdvisor单元测试）将保持不变？ 预先感谢您的任何帮助。

PS Github的项目回购可以在这里找到： PlayGroud Kotlin，Spring Data等 。

PS2 Stacktrace：

 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）导致UndeclaredThrowableException 。 EntityValidationException Kotlin类代码：

 package beans.validator.exceptions import beans.validator.constraintViolation.ConstraintViolationInfo class EntityValidationException (val violationInfos: List<ConstraintViolationInfo>) : Exception() { } 

PS3这也没有工作：

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

PS4也许问题是@Aspect是@Around春季数据存储库？

 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> { } 

Answer 1

你正在试图使save()方法或你的仓库抛出一个没有声明的检查异常。 所以，即使方面声明，这也不能工作。 你需要让你的异常延长RuntimeException 。