java.lang.ClassNotFoundException:org.springframework.cloud.client.discovery.composite.reactive.ReactiveCompositeDiscoveryClientAutoConfig

我正在尝试设置spring云配置客户端这是我的pom依赖项：

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-config</artifactId>
    <version>2.1.5.RELEASE</version>
</dependency>

我得到了一个例外：

java.lang.IllegalArgumentException: Could not find class [org.springframework.cloud.client.discovery.composite.reactive.ReactiveCompositeDiscoveryClientAutoConfiguration]
    at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:327)
    at org.springframework.core.annotation.TypeMappedAnnotation.adapt(TypeMappedAnnotation.java:483)
    at org.springframework.core.annotation.TypeMappedAnnotation.getValue(TypeMappedAnnotation.java:403)
    at org.springframework.core.annotation.TypeMappedAnnotation.asMap(TypeMappedAnnotation.java:288)
    at org.springframework.core.annotation.AbstractMergedAnnotation.asAnnotationAttributes(AbstractMergedAnnotation.java:193)
    at org.springframework.core.type.AnnotatedTypeMetadata.getAnnotationAttributes(AnnotatedTypeMetadata.java:106)
    at org.springframework.context.annotation.AnnotationConfigUtils.attributesFor(AnnotationConfigUtils.java:285)
    at org.springframework.context.annotation.AnnotationBeanNameGenerator.determineBeanNameFromAnnotation(AnnotationBeanNameGenerator.java:100)
    at org.springframework.context.annotation.AnnotationBeanNameGenerator.generateBeanName(AnnotationBeanNameGenerator.java:79)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.registerBeanDefinitionForImportedConfigurationClass(ConfigurationClassBeanDefinitionReader.java:160)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:141)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:337)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:242)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)

我怎样才能解决这个问题？我在谷歌上搜索发现SimpleReactiveDiscoveryClientAutoConfiguration.java是SpringCloudCommons的一部分，从2.2.0开始，现在只有RC： 当我添加SpringCloudCommons 2.2.0时，它起到了作用，但是有没有办法不用RC就能让它起作用呢

我使用spring boot 2.2.1.RELEASE，spring cloud starter config 2.1.5.RELEASE

我也是spring的新手（来自前端/JavaScript背景），所以在Java世界中有很多东西对我来说都很奇怪和复杂

我做了一些挖掘，发现了一些可能有助于详细解释的链接：

基本上（我是怎么理解的；我可能错了），SpringCloud在SpringBoot之上工作；它不是spring启动组/项目的常规依赖项/部分。所以基本上，它需要（所谓的）依赖关系管理

将此添加到pom.xml中（这对我来说很有用）：

org.springframework.cloud
SpringCloudStarter父级
格林威治释放
聚甲醛
进口

用于将项目设置为父应用程序。如果不起作用，请尝试以下方法：

org.springframework.cloud
spring云依赖关系
${spring cloud.version}
聚甲醛
进口

在这种方法中，我猜这是为了决定pom中spring云依赖项使用哪个版本。对于这一个，确保

properties

元素添加了SpringCloud版本（这就是

${springcloud.version}

将要引用的内容）：

1.8
Hoxton.SR8

---

同样，第一种方法对我有效。有关更多信息，请参阅链接。找到更多的信息和文档比我想象的要困难。

这样的错误通常来自混合不兼容的框架版本。@M.Deinum i edit post和添加的版本详细信息。恐怕Spring Boot 2.2还没有最终的Spring Cloud版本。霍克斯顿释放系列适用于弹簧靴2.2。所以要么使用Hoxton版本，要么暂时使用RC版本（它是RC2，所以发行版应该就在眼前）。或者将Spring Boot 2.1与兼容的Spring Cloud Greenwich版本（SR4）一起移动。另外，请使用Spring Cloud BOM，而不是单独的启动器/罐子版本，因为这将导致某些地方的损坏。

java.lang.IllegalArgumentException: Could not find class [org.springframework.cloud.client.discovery.composite.reactive.ReactiveCompositeDiscoveryClientAutoConfiguration]
    at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:327)
    at org.springframework.core.annotation.TypeMappedAnnotation.adapt(TypeMappedAnnotation.java:483)
    at org.springframework.core.annotation.TypeMappedAnnotation.getValue(TypeMappedAnnotation.java:403)
    at org.springframework.core.annotation.TypeMappedAnnotation.asMap(TypeMappedAnnotation.java:288)
    at org.springframework.core.annotation.AbstractMergedAnnotation.asAnnotationAttributes(AbstractMergedAnnotation.java:193)
    at org.springframework.core.type.AnnotatedTypeMetadata.getAnnotationAttributes(AnnotatedTypeMetadata.java:106)
    at org.springframework.context.annotation.AnnotationConfigUtils.attributesFor(AnnotationConfigUtils.java:285)
    at org.springframework.context.annotation.AnnotationBeanNameGenerator.determineBeanNameFromAnnotation(AnnotationBeanNameGenerator.java:100)
    at org.springframework.context.annotation.AnnotationBeanNameGenerator.generateBeanName(AnnotationBeanNameGenerator.java:79)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.registerBeanDefinitionForImportedConfigurationClass(ConfigurationClassBeanDefinitionReader.java:160)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:141)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:337)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:242)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275)
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)