Spring-Boot @ConditionalOnMissingBean для универсального класса с несколькими типами

Проблема

В нашем проекте Spring-Boot-Stater (Spring-Boot 3.2.3) у нас есть компонент-конвертер по умолчанию. Для простоты скажем, что он преобразует целое число в строку. Поскольку это хорошая практика, мы пометили компонент @ConditionalOnMissingBean. Компонент инициализируется правильно и может быть заменен на другую реализацию без каких-либо проблем. Но если мы создаем компонент-конвертер для некоторых других типов, например Foo в Baa, компонент по умолчанию не создается, и когда мы пытаемся внедрить его, мы получаем исключение UnsatisfiedDependencyException.

При обновлении @ConditionalOnMissingBean информацией о типе, как указано в Spring Boot @ConditionalOnMissingBean и универсальных типах, Приложение больше не запускается с исключением IllegalStateException.

Примеры

Конвертер по умолчанию в Spring-Boot-Starter

@Bean
@ConditionalOnMissingBean(parameterizedContainer = Converter.class, value = {Integer.class, String.class})
public Converter<Integer,String> exampleConverter() {
    return Integer::toHexString;
}

заменить преобразователь

@Bean
Converter<Integer, String> exampleConverter() {
    return Integer::toBinaryString;
}

Другой конвертер в проекте

@Bean
Converter<String, String> uppercaseConverter() {
    return String::toUpperCase;
}

Обходной путь

Неидеальный вариант, который мы сейчас используем, — это ограничить компонент по имени.

@Bean
@ConditionalOnMissingBean(name = "exampleConverter")
public Converter<Integer,String> exampleConverter() {
    return Integer::toHexString;
}

Вопрос

Итак, мы нашли обходной путь, но он не идеален. Фактический вопрос: делаю ли я что-то не так с общими условиями или это ошибка в Spring-Boot, и мне следует зарегистрировать проблему на GitHub?

Журнал ошибок

java.lang.IllegalStateException: Error processing condition on io.d4e.starter.ExampleAutoConfiguration.exampleConverter
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:60) ~[spring-boot-autoconfigure-3.2.3.jar:3.2.3]
    at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:183) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:144) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:428) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:289) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:349) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:118) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:788) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:606) ~[spring-context-6.1.4.jar:6.1.4]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-3.2.3.jar:3.2.3]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:456) ~[spring-boot-3.2.3.jar:3.2.3]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:334) ~[spring-boot-3.2.3.jar:3.2.3]
    at org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:137) ~[spring-boot-test-3.2.3.jar:3.2.3]
    at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:58) ~[spring-core-6.1.4.jar:6.1.4]
    at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:46) ~[spring-core-6.1.4.jar:6.1.4]
    at org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1454) ~[spring-boot-3.2.3.jar:3.2.3]
    at org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:553) ~[spring-boot-test-3.2.3.jar:3.2.3]
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:137) ~[spring-boot-test-3.2.3.jar:3.2.3]
    at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:108) ~[spring-boot-test-3.2.3.jar:3.2.3]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:225) ~[spring-test-6.1.4.jar:6.1.4]
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:152) ~[spring-test-6.1.4.jar:6.1.4]
    at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:130) ~[spring-test-6.1.4.jar:6.1.4]
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:142) ~[spring-test-6.1.4.jar:6.1.4]
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:98) ~[spring-test-6.1.4.jar:6.1.4]
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:260) ~[spring-test-6.1.4.jar:6.1.4]
    at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:163) ~[spring-test-6.1.4.jar:6.1.4]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$10(ClassBasedTestDescriptor.java:378) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:383) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$11(ClassBasedTestDescriptor.java:378) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[na:na]
    at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na]
    at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[na:na]
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na]
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na]
    at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:310) ~[na:na]
    at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735) ~[na:na]
    at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) ~[na:na]
    at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) ~[na:na]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:377) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:290) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:289) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:279) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at java.base/java.util.Optional.orElseGet(Optional.java:364) ~[na:na]
    at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:278) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:106) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:105) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:69) ~[junit-jupiter-engine-5.10.2.jar:5.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na]
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) ~[na:na]
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54) ~[junit-platform-engine-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:198) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:169) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:93) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:58) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:141) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:57) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:103) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:85) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.DelegatingLauncher.execute(DelegatingLauncher.java:47) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:63) ~[junit-platform-launcher-1.10.2.jar:1.10.2]
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57) ~[junit5-rt.jar:na]
    at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38) ~[junit-rt.jar:na]
    at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11) ~[idea_rt.jar:na]
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35) ~[junit-rt.jar:na]
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232) ~[junit-rt.jar:na]
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55) ~[junit-rt.jar:na]
Caused by: java.lang.IllegalArgumentException: Mismatched number of generics specified for public abstract interface org.springframework.core.convert.converter.Converter<S,T>
    at org.springframework.util.Assert.isTrue(Assert.java:129) ~[spring-core-6.1.4.jar:6.1.4]
    at org.springframework.core.ResolvableType.forClassWithGenerics(ResolvableType.java:1125) ~[spring-core-6.1.4.jar:6.1.4]
    at org.springframework.core.ResolvableType.forClassWithGenerics(ResolvableType.java:1111) ~[spring-core-6.1.4.jar:6.1.4]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.collectBeanNamesForType(OnBeanCondition.java:249) ~[spring-boot-autoconfigure-3.2.3.jar:3.2.3]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:240) ~[spring-boot-autoconfigure-3.2.3.jar:3.2.3]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:230) ~[spring-boot-autoconfigure-3.2.3.jar:3.2.3]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchingBeans(OnBeanCondition.java:183) ~[spring-boot-autoconfigure-3.2.3.jar:3.2.3]
    at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:158) ~[spring-boot-autoconfigure-3.2.3.jar:3.2.3]
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-3.2.3.jar:3.2.3]
    ... 94 common frames omitted