nested exception is java.lang.NoClassDefFoundError: org/springframework/boot/actuate/health/OrderedHealthAggregator

異常信息

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cloud.netflix.eureka.EurekaDiscoveryClientConfiguration$EurekaHealthCheckHandlerConfiguration': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.netflix.eureka.EurekaDiscoveryClientConfiguration$EurekaHealthCheckHandlerConfiguration$$EnhancerBySpringCGLIB$$ac45339c]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/boot/actuate/health/OrderedHealthAggregator
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1155)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1099)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:314)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151)
	at com.fstimers.labelData.LabelDataApplication.main(LabelDataApplication.java:19)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.netflix.eureka.EurekaDiscoveryClientConfiguration$EurekaHealthCheckHandlerConfiguration$$EnhancerBySpringCGLIB$$ac45339c]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/boot/actuate/health/OrderedHealthAggregator
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:154)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1147)
	... 17 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/actuate/health/OrderedHealthAggregator
	at org.springframework.cloud.netflix.eureka.EurekaDiscoveryClientConfiguration$EurekaHealthCheckHandlerConfiguration.<init>(EurekaDiscoveryClientConfiguration.java:210)
	at org.springframework.cloud.netflix.eureka.EurekaDiscoveryClientConfiguration$EurekaHealthCheckHandlerConfiguration$$EnhancerBySpringCGLIB$$ac45339c.<init>(<generated>)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:142)
	... 19 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.actuate.health.OrderedHealthAggregator
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 26 common frames omitted

解決方法

在pom文件中添加以下依賴，再次運行后成功啟動：

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

Reference

【1】https://stackoverflow.com/questions/47648888/problems-with-eureka-health-checks-in-spring-application?rq=1
【2】https://www.baeldung.com/spring-boot-actuators