Spring BootJava11个缺失的运行时依赖项

Question

在Java10和maven中运行我的Spring boot项目，一切都很好。简单地将JDK从10更改为11会导致以下错误：

 emailer_1        | java.lang.IllegalStateException: Error processing condition on org.springframework.cloud.vault.config.VaultReactiveBootstrapConfiguration.reactiveVaultSessionManager
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:64)
    emailer_1        |  at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108)
    emailer_1        |  at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:181)
    emailer_1        |  at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:141)
    emailer_1        |  at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:117)
    emailer_1        |  at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:327)
    emailer_1        |  at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:232)
    emailer_1        |  at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275)
       | Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.vault.config.VaultReactiveBootstrapConfiguration] from ClassLoader [org.springframework.boot.loader.LaunchedURLClassLoader@5d099f62]
    emailer_1        |  at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:680)
    emailer_1        |  at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:577)
    emailer_1        |  at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:562)
    emailer_1        |  at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:620)
    emailer_1        |  at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705)
    emailer_1        |  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:721)
    emailer_1        |  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:662)
    emailer_1        |  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:630)
    emailer_1        |  at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1491)
    emailer_1        |  at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1014)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanTypeForNonAliasDefinition(BeanTypeRegistry.java:198)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanTypeForNonAliasDefinition(BeanTypeRegistry.java:174)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanType(BeanTypeRegistry.java:167)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.lambda$updateTypesIfNecessary$3(BeanTypeRegistry.java:154)
    emailer_1        |  at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.updateTypesIfNecessary(BeanTypeRegistry.java:152)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.getNamesForType(BeanTypeRegistry.java:118)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.OnBeanCondition.collectBeanNamesForType(OnBeanCondition.java:301)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:290)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchingBeans(OnBeanCondition.java:232)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:152)
    emailer_1        |  at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47)
    emailer_1        |  ... 36 common frames omitted
   emailer_1        | Caused by: java.lang.ClassNotFoundException: reactor.core.publisher.Mono
    emailer_1        |  at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
    emailer_1        |  at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
    emailer_1        |  at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:93)
    emailer_1        |  at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
    emailer_1        |  ... 61 common frames omitted

我没有使用Spring Webflux框架，以前也不需要任何带有reactor框架的jar。我知道Java 11从JDK中剔除了很多JEE的东西，但这不是那个。

我尝试了SpringBoot 2.0.5版本和最新的里程碑版本（M4）2.1，结果是一样的。我已经更改了Finchley的Spring Cloud版本。SR1到格林威治。M1具有相同的结果。

有没有人遇到过类似的问题？任何帮助都非常感谢。

编辑:简单地将reactor core作为托管依赖项添加到我的Pom中会导致另一个问题，即找不到Netty库...这很奇怪，因为它应该使用tomcat。

Answer 1

在撰写本文时，根据Spring Boot文档，Spring Boot2.1.0.M4和2.0.5.RELEASE需要Java 8或9以及Spring Framework 5.1.1.5.RELEASE或更高版本。所以我认为Spring Boot还没有正式支持Java11。

https://docs.spring.io/spring-boot/docs/2.0.5.RELEASE/reference/html/getting-started-system-requirements.html

https://docs.spring.io/spring-boot/docs/2.1.0.M4/reference/html/getting-started-system-requirements.html