*java.lang.IllegalStateException: Error processing condition on org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataConfiguration$BaseConfiguration.mappingContext at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:60) ~[spring-boot-autoconfigure-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:184) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:144) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:236) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:280) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:96) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:707) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:533) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at com.nowcoder.community.CommunityApplication.main(CommunityApplication.java:18) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.0.RELEASE.jar:2.2.0.RELEASE] Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataConfiguration$BaseConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:481) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:358) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:414) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.lambda$getTypeForFactoryMethod$2(AbstractAutowireCapableBeanFactory.java:742) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1688) ~[na:1.8.0_281] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:741) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:680) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:648) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1614) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:523) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:495) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.boot.autoconfigure.condition.OnBeanCondition.collectBeanNamesForType(OnBeanCondition.java:230) ~[spring-boot-autoconfigure-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:223) ~[spring-boot-autoconfigure-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:213) ~[spring-boot-autoconfigure-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchingBeans(OnBeanCondition.java:167) ~[spring-boot-autoconfigure-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:142) ~[spring-boot-autoconfigure-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.2.0.RELEASE.jar:2.2.0.RELEASE] ... 22 common frames omitted Caused by: java.lang.NoClassDefFoundError: org/springframework/data/elasticsearch/core/EntityMapper at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_281] at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_281] at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_281] at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:463) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] ... 38 common frames omitted Caused by: java.lang.ClassNotFoundException: org.springframework.data.elasticsearch.core.EntityMapper at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_281] at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_281] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_281] at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_281] ... 42 common frames omitted 2022-07-08 11:11:21.552 WARN 33108 --- [ restartedMain] o.s.boot.SpringApplication : Unable to close ApplicationContext java.lang.IllegalStateException: Failed to introspect Class [org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataConfiguration$BaseConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:481) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:358) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:414) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.lambda$getTypeForFactoryMethod$2(AbstractAutowireCapableBeanFactory.java:742) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1688) ~[na:1.8.0_281] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:741) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:680) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:648) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1614) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:523) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:495) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:620) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:612) ~[spring-beans-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1243) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.boot.SpringApplication.getExitCodeFromMappedException(SpringApplication.java:869) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.getExitCodeFromException(SpringApplication.java:857) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.handleExitCode(SpringApplication.java:844) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:795) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:325) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.0.RELEASE.jar:2.2.0.RELEASE] at com.nowcoder.community.CommunityApplication.main(CommunityApplication.java:18) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.0.RELEASE.jar:2.2.0.RELEASE] Caused by: java.lang.NoClassDefFoundError: org/springframework/data/elasticsearch/core/EntityMapper at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_281] at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) ~[na:1.8.0_281] at java.lang.Class.getDeclaredMethods(Class.java:1975) ~[na:1.8.0_281] at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:463) ~[spring-core-5.2.12.RELEASE.jar:5.2.12.RELEASE] ... 26 common frames omitted Caused by: java.lang.ClassNotFoundException: org.springframework.data.elasticsearch.core.EntityMapper at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_281] at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_281] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_281] at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_281] ... 30 common frames omitted*
在整合elasticsearch做测试时出现了上述问题，查阅了很多资料，貌似说的都是版本号的问题，我选用的springboot为2.2.0，然后安装的elasticsearch为6.8.3，我看父pom中依赖的spring-boot-starter-data-elasticsearch为2.2.0，而spring-boot-starter-data-elasticsearch中的子依赖spring-data-elasticsearch为3.2.0。
但是问题来了，我看我的maven里面的依赖的版本却是4.0.6RELEASE
因此感觉就是上面这个版本的问题，于是将那个版本换为3.2.0，但是问题来了，我没有设置过版本，为什么版本号不随着父pom中声明的版本号呢？这令我百思不得其解，最后终于发现了问题所在，我声明的父pom中springboot版本号是2.2.0RELEASE，但是我的项目的版本号是2.3.7RELEASE，于是我将其删了之后，就奇迹般的好了。
