今天在編譯Eureka時，編譯通過，test通不過，總是報Failed to load ApplicationContext錯誤，後來發現是spring cloud和spring boot引用版本不對應造成的。spring boot用了2.2.5版，cloud用了Greenwich版本。
對應關係查詢
https://start.spring.io/actuator/info。
報錯信息
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 4.565 s <<< FAILURE! - in com.wp.eureka.ApplicationTests
[ERROR] contextLoads Time elapsed: 0.007 s <<< ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'healthIndicatorRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/LegacyHealthEndpointCompatibilityConfiguration.class]: Unsatisfied dependency expressed through method 'healthIndicatorRegistry' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthContributorRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthContributorRegistry]: Factory method 'healthContributorRegistry' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'discoveryCompositeHealthIndicator' defined in class path resource [org/springframework/cloud/client/CommonsClientAutoConfiguration$DiscoveryLoadBalancerConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.client.discovery.health.DiscoveryCompositeHealthIndicator]: Factory method 'discoveryCompositeHealthIndicator' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)V
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'healthContributorRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/health/HealthEndpointConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthContributorRegistry]: Factory method 'healthContributorRegistry' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'discoveryCompositeHealthIndicator' defined in class path resource [org/springframework/cloud/client/CommonsClientAutoConfiguration$DiscoveryLoadBalancerConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.client.discovery.health.DiscoveryCompositeHealthIndicator]: Factory method 'discoveryCompositeHealthIndicator' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)V
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.actuate.health.HealthContributorRegistry]: Factory method 'healthContributorRegistry' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'discoveryCompositeHealthIndicator' defined in class path resource [org/springframework/cloud/client/CommonsClientAutoConfiguration$DiscoveryLoadBalancerConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.client.discovery.health.DiscoveryCompositeHealthIndicator]: Factory method 'discoveryCompositeHealthIndicator' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)V
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'discoveryCompositeHealthIndicator' defined in class path resource [org/springframework/cloud/client/CommonsClientAutoConfiguration$DiscoveryLoadBalancerConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.client.discovery.health.DiscoveryCompositeHealthIndicator]: Factory method 'discoveryCompositeHealthIndicator' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)V
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.client.discovery.health.DiscoveryCompositeHealthIndicator]: Factory method 'discoveryCompositeHealthIndicator' threw exception; nested exception is java.lang.NoSuchMethodError: org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)V
Caused by: java.lang.NoSuchMethodError: org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)V