SpringCloud踩坑之 The following method did not exist

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今天在使用 SpringCloud 时遇到了一个问题，感觉有不少小伙伴会遇到，所以记录下来

版本说明

SpringBoot		2.2.4.RELEASE
SpringCloud		Greenwich.SR1

情景复现

在 pom.xml 中加入如下依赖

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

启动项目后报错 The following method did not exist: org.springframework.boot.actuate.health.CompositeHealthIndicator

***************************
APPLICATION FAILED TO START
***************************Description:An attempt was made to call a method that does not exist. The attempt was made from the following location:org.springframework.cloud.client.discovery.health.DiscoveryCompositeHealthIndicator.<init>(DiscoveryCompositeHealthIndicator.java:42)The following method did not exist:org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)VThe method's class, org.springframework.boot.actuate.health.CompositeHealthIndicator, is available from the following locations:jar:file:/Volumes/Others/MVNrepository/org/springframework/boot/spring-boot-actuator/2.2.4.RELEASE/spring-boot-actuator-2.2.4.RELEASE.jar!/org/springframework/boot/actuate/health/CompositeHealthIndicator.classIt was loaded from the following location:file:/Volumes/Others/MVNrepository/org/springframework/boot/spring-boot-actuator/2.2.4.RELEASE/spring-boot-actuator-2.2.4.RELEASE.jarAction:Correct the classpath of your application so that it contains a single, compatible version of org.springframework.boot.actuate.health.CompositeHealthIndicator

问题分析

问题所在就是——版本冲突
我使用的 SpringBoot 版本是2.2.4，而 SpringCloud 版本是 Greenwich，二者的兼容还是有一定问题的，所以在启动时会报错：在 spring-boot-actuator-2.2.4.RELEASE.jar 下找不到 CompositeHealthIndicator.class