Spring Cloud报错java.lang.IllegalArgumentException: Could not find class

在学习Spring Cloud的过程中碰到了一个奇怪的问题：java.lang.IllegalArgumentException: Could not find class [org.springframework.boot.actuate.autoconfigure.health.HealthIndicatorAutoConfiguration]直接说解决方法，修改Springcloud版本，用

王羲和

14660人浏览 · 2021-01-03 11:52:51

王羲和 · 2021-01-03 11:52:51 发布

在学习Spring Cloud的过程中碰到了一个奇怪的问题：java.lang.IllegalArgumentException: Could not find class [org.springframework.boot.actuate.autoconfigure.health.HealthIndicatorAutoConfiguration]

直接说解决方法，修改Springcloud版本，用idea新建的Spring Cloud项目很可能没有添加了Spring Cloud的依赖，具体看自己的pom.xml文件
我是加上了下面这一段好的：

<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>

<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>2.1.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>

下面附上具体报错的代码

D:\Java\jdk8\bin\java.exe -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\JetBrains\IntelliJ IDEA 2020.1.2\lib\idea_rt.jar=53757:D:\JetBrains\IntelliJ IDEA 2020.1.2\bin" -Dfile.encoding=UTF-8 -classpath D:\Java\jdk8\jre\lib\charsets.jar;D:\Java\jdk8\jre\lib\deploy.jar;D:\Java\jdk8\jre\lib\ext\access-bridge-64.jar;D:\Java\jdk8\jre\lib\ext\cldrdata.jar;D:\Java\jdk8\jre\lib\ext\dnsns.jar;D:\Java\jdk8\jre\lib\ext\jaccess.jar;D:\Java\jdk8\jre\lib\ext\jfxrt.jar;D:\Java\jdk8\jre\lib\ext\localedata.jar;D:\Java\jdk8\jre\lib\ext\nashorn.jar;D:\Java\jdk8\jre\lib\ext\sunec.jar;D:\Java\jdk8\jre\lib\ext\sunjce_provider.jar;D:\Java\jdk8\jre\lib\ext\sunmscapi.jar;D:\Java\jdk8\jre\lib\ext\sunpkcs11.jar;D:\Java\jdk8\jre\lib\ext\zipfs.jar;D:\Java\jdk8\jre\lib\javaws.jar;D:\Java\jdk8\jre\lib\jce.jar;D:\Java\jdk8\jre\lib\jfr.jar;D:\Java\jdk8\jre\lib\jfxswt.jar;D:\Java\jdk8\jre\lib\jsse.jar;D:\Java\jdk8\jre\lib\management-agent.jar;D:\Java\jdk8\jre\lib\plugin.jar;D:\Java\jdk8\jre\lib\resources.jar;D:\Java\jdk8\jre\lib\rt.jar;D:\WorkSpace\Java\clouddemo\target\classes;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter-netflix-eureka-server\3.0.0\spring-cloud-starter-netflix-eureka-server-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter\3.0.0\spring-cloud-starter-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-context\3.0.0\spring-cloud-context-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\security\spring-security-crypto\5.4.2\spring-security-crypto-5.4.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-commons\3.0.0\spring-cloud-commons-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\security\spring-security-rsa\1.0.9.RELEASE\spring-security-rsa-1.0.9.RELEASE.jar;C:\Users\wangxihe\.m2\repository\org\bouncycastle\bcpkix-jdk15on\1.64\bcpkix-jdk15on-1.64.jar;C:\Users\wangxihe\.m2\repository\org\bouncycastle\bcprov-jdk15on\1.64\bcprov-jdk15on-1.64.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-netflix-eureka-server\3.0.0\spring-cloud-netflix-eureka-server-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.4.1\spring-boot-starter-web-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.4.1\spring-boot-starter-json-2.4.1.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.11.3\jackson-datatype-jdk8-2.11.3.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.11.3\jackson-datatype-jsr310-2.11.3.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.11.3\jackson-module-parameter-names-2.11.3.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.4.1\spring-boot-starter-tomcat-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.41\tomcat-embed-core-9.0.41.jar;C:\Users\wangxihe\.m2\repository\org\glassfish\jakarta.el\3.0.3\jakarta.el-3.0.3.jar;C:\Users\wangxihe\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.41\tomcat-embed-websocket-9.0.41.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-webmvc\5.3.2\spring-webmvc-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-expression\5.3.2\spring-expression-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-actuator\2.4.1\spring-boot-starter-actuator-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-actuator-autoconfigure\2.4.1\spring-boot-actuator-autoconfigure-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-actuator\2.4.1\spring-boot-actuator-2.4.1.jar;C:\Users\wangxihe\.m2\repository\io\micrometer\micrometer-core\1.6.2\micrometer-core-1.6.2.jar;C:\Users\wangxihe\.m2\repository\org\hdrhistogram\HdrHistogram\2.1.12\HdrHistogram-2.1.12.jar;C:\Users\wangxihe\.m2\repository\org\latencyutils\LatencyUtils\2.0.3\LatencyUtils-2.0.3.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-freemarker\2.4.1\spring-boot-starter-freemarker-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\freemarker\freemarker\2.3.30\freemarker-2.3.30.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-context-support\5.3.2\spring-context-support-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-netflix-eureka-client\3.0.0\spring-cloud-netflix-eureka-client-3.0.0.jar;C:\Users\wangxihe\.m2\repository\com\netflix\eureka\eureka-client\1.10.10\eureka-client-1.10.10.jar;C:\Users\wangxihe\.m2\repository\com\netflix\netflix-commons\netflix-eventbus\0.3.0\netflix-eventbus-0.3.0.jar;C:\Users\wangxihe\.m2\repository\com\netflix\netflix-commons\netflix-infix\0.3.0\netflix-infix-0.3.0.jar;C:\Users\wangxihe\.m2\repository\commons-jxpath\commons-jxpath\1.3\commons-jxpath-1.3.jar;C:\Users\wangxihe\.m2\repository\org\antlr\antlr-runtime\3.4\antlr-runtime-3.4.jar;C:\Users\wangxihe\.m2\repository\org\antlr\stringtemplate\3.2.1\stringtemplate-3.2.1.jar;C:\Users\wangxihe\.m2\repository\antlr\antlr\2.7.7\antlr-2.7.7.jar;C:\Users\wangxihe\.m2\repository\org\apache\commons\commons-math\2.2\commons-math-2.2.jar;C:\Users\wangxihe\.m2\repository\javax\ws\rs\jsr311-api\1.1.1\jsr311-api-1.1.1.jar;C:\Users\wangxihe\.m2\repository\com\sun\jersey\jersey-core\1.19.1\jersey-core-1.19.1.jar;C:\Users\wangxihe\.m2\repository\com\google\inject\guice\4.1.0\guice-4.1.0.jar;C:\Users\wangxihe\.m2\repository\aopalliance\aopalliance\1.0\aopalliance-1.0.jar;C:\Users\wangxihe\.m2\repository\org\codehaus\jettison\jettison\1.4.0\jettison-1.4.0.jar;C:\Users\wangxihe\.m2\repository\com\sun\jersey\jersey-servlet\1.19.4\jersey-servlet-1.19.4.jar;C:\Users\wangxihe\.m2\repository\com\sun\jersey\jersey-server\1.19.4\jersey-server-1.19.4.jar;C:\Users\wangxihe\.m2\repository\com\sun\jersey\jersey-client\1.19.4\jersey-client-1.19.4.jar;C:\Users\wangxihe\.m2\repository\com\netflix\eureka\eureka-core\1.10.10\eureka-core-1.10.10.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\woodstox\woodstox-core\5.3.0\woodstox-core-5.3.0.jar;C:\Users\wangxihe\.m2\repository\javax\inject\javax.inject\1\javax.inject-1.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-xml\2.11.3\jackson-dataformat-xml-2.11.3.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\module\jackson-module-jaxb-annotations\2.11.3\jackson-module-jaxb-annotations-2.11.3.jar;C:\Users\wangxihe\.m2\repository\org\codehaus\woodstox\stax2-api\4.2.1\stax2-api-4.2.1.jar;C:\Users\wangxihe\.m2\repository\com\thoughtworks\xstream\xstream\1.4.14\xstream-1.4.14.jar;C:\Users\wangxihe\.m2\repository\xmlpull\xmlpull\1.1.3.1\xmlpull-1.1.3.1.jar;C:\Users\wangxihe\.m2\repository\xpp3\xpp3_min\1.1.4c\xpp3_min-1.1.4c.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter-loadbalancer\3.0.0\spring-cloud-starter-loadbalancer-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-loadbalancer\3.0.0\spring-cloud-loadbalancer-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-validation\2.4.1\spring-boot-starter-validation-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\hibernate\validator\hibernate-validator\6.1.6.Final\hibernate-validator-6.1.6.Final.jar;C:\Users\wangxihe\.m2\repository\jakarta\validation\jakarta.validation-api\2.0.2\jakarta.validation-api-2.0.2.jar;C:\Users\wangxihe\.m2\repository\org\jboss\logging\jboss-logging\3.4.1.Final\jboss-logging-3.4.1.Final.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\classmate\1.5.1\classmate-1.5.1.jar;C:\Users\wangxihe\.m2\repository\io\projectreactor\reactor-core\3.4.1\reactor-core-3.4.1.jar;C:\Users\wangxihe\.m2\repository\org\reactivestreams\reactive-streams\1.0.3\reactive-streams-1.0.3.jar;C:\Users\wangxihe\.m2\repository\io\projectreactor\addons\reactor-extra\3.4.1\reactor-extra-3.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-cache\2.4.1\spring-boot-starter-cache-2.4.1.jar;C:\Users\wangxihe\.m2\repository\com\stoyanr\evictor\1.0.0\evictor-1.0.0.jar;C:\Users\wangxihe\.m2\repository\org\glassfish\jaxb\jaxb-runtime\2.3.3\jaxb-runtime-2.3.3.jar;C:\Users\wangxihe\.m2\repository\org\glassfish\jaxb\txw2\2.3.3\txw2-2.3.3.jar;C:\Users\wangxihe\.m2\repository\com\sun\istack\istack-commons-runtime\3.0.11\istack-commons-runtime-3.0.11.jar;C:\Users\wangxihe\.m2\repository\com\sun\activation\jakarta.activation\1.2.2\jakarta.activation-1.2.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter\2.4.1\spring-boot-starter-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot\2.4.1\spring-boot-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-context\5.3.2\spring-context-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.4.1\spring-boot-starter-logging-2.4.1.jar;C:\Users\wangxihe\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;C:\Users\wangxihe\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;C:\Users\wangxihe\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.13.3\log4j-to-slf4j-2.13.3.jar;C:\Users\wangxihe\.m2\repository\org\apache\logging\log4j\log4j-api\2.13.3\log4j-api-2.13.3.jar;C:\Users\wangxihe\.m2\repository\org\slf4j\jul-to-slf4j\1.7.30\jul-to-slf4j-1.7.30.jar;C:\Users\wangxihe\.m2\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;C:\Users\wangxihe\.m2\repository\org\yaml\snakeyaml\1.27\snakeyaml-1.27.jar;C:\Users\wangxihe\.m2\repository\org\slf4j\slf4j-api\1.7.30\slf4j-api-1.7.30.jar;C:\Users\wangxihe\.m2\repository\jakarta\xml\bind\jakarta.xml.bind-api\2.3.3\jakarta.xml.bind-api-2.3.3.jar;C:\Users\wangxihe\.m2\repository\jakarta\activation\jakarta.activation-api\1.2.2\jakarta.activation-api-1.2.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-core\5.3.2\spring-core-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-jcl\5.3.2\spring-jcl-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter-consul-discovery\2.0.0.RELEASE\spring-cloud-starter-consul-discovery-2.0.0.RELEASE.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter-consul\3.0.0\spring-cloud-starter-consul-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-consul-core\3.0.0\spring-cloud-consul-core-3.0.0.jar;C:\Users\wangxihe\.m2\repository\com\ecwid\consul\consul-api\1.4.5\consul-api-1.4.5.jar;C:\Users\wangxihe\.m2\repository\com\google\code\gson\gson\2.8.6\gson-2.8.6.jar;C:\Users\wangxihe\.m2\repository\org\apache\httpcomponents\httpclient\4.5.13\httpclient-4.5.13.jar;C:\Users\wangxihe\.m2\repository\commons-codec\commons-codec\1.15\commons-codec-1.15.jar;C:\Users\wangxihe\.m2\repository\org\apache\httpcomponents\httpcore\4.4.14\httpcore-4.4.14.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-consul-discovery\3.0.0\spring-cloud-consul-discovery-3.0.0.jar;C:\Users\wangxihe\.m2\repository\commons-configuration\commons-configuration\1.8\commons-configuration-1.8.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-netflix-core\2.0.0.RELEASE\spring-cloud-netflix-core-2.0.0.RELEASE.jar;C:\Users\wangxihe\.m2\repository\joda-time\joda-time\2.9.9\joda-time-2.9.9.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter-netflix-ribbon\2.2.0.RELEASE\spring-cloud-starter-netflix-ribbon-2.2.0.RELEASE.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-netflix-ribbon\2.2.0.RELEASE\spring-cloud-netflix-ribbon-2.2.0.RELEASE.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-netflix-archaius\2.2.0.RELEASE\spring-cloud-netflix-archaius-2.2.0.RELEASE.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter-netflix-archaius\2.2.0.RELEASE\spring-cloud-starter-netflix-archaius-2.2.0.RELEASE.jar;C:\Users\wangxihe\.m2\repository\com\netflix\archaius\archaius-core\0.7.6\archaius-core-0.7.6.jar;C:\Users\wangxihe\.m2\repository\com\google\code\findbugs\jsr305\3.0.1\jsr305-3.0.1.jar;C:\Users\wangxihe\.m2\repository\com\netflix\ribbon\ribbon\2.3.0\ribbon-2.3.0.jar;C:\Users\wangxihe\.m2\repository\com\netflix\ribbon\ribbon-transport\2.3.0\ribbon-transport-2.3.0.jar;C:\Users\wangxihe\.m2\repository\io\reactivex\rxnetty-contexts\0.4.9\rxnetty-contexts-0.4.9.jar;C:\Users\wangxihe\.m2\repository\io\reactivex\rxnetty-servo\0.4.9\rxnetty-servo-0.4.9.jar;C:\Users\wangxihe\.m2\repository\com\netflix\hystrix\hystrix-core\1.4.3\hystrix-core-1.4.3.jar;C:\Users\wangxihe\.m2\repository\io\reactivex\rxnetty\0.4.9\rxnetty-0.4.9.jar;C:\Users\wangxihe\.m2\repository\com\google\guava\guava\16.0.1\guava-16.0.1.jar;C:\Users\wangxihe\.m2\repository\com\netflix\ribbon\ribbon-core\2.3.0\ribbon-core-2.3.0.jar;C:\Users\wangxihe\.m2\repository\commons-lang\commons-lang\2.6\commons-lang-2.6.jar;C:\Users\wangxihe\.m2\repository\com\netflix\ribbon\ribbon-httpclient\2.3.0\ribbon-httpclient-2.3.0.jar;C:\Users\wangxihe\.m2\repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;C:\Users\wangxihe\.m2\repository\com\sun\jersey\contribs\jersey-apache-client4\1.19.1\jersey-apache-client4-1.19.1.jar;C:\Users\wangxihe\.m2\repository\com\netflix\servo\servo-core\0.10.1\servo-core-0.10.1.jar;C:\Users\wangxihe\.m2\repository\com\netflix\servo\servo-internal\0.10.1\servo-internal-0.10.1.jar;C:\Users\wangxihe\.m2\repository\com\netflix\netflix-commons\netflix-commons-util\0.1.1\netflix-commons-util-0.1.1.jar;C:\Users\wangxihe\.m2\repository\com\netflix\ribbon\ribbon-loadbalancer\2.3.0\ribbon-loadbalancer-2.3.0.jar;C:\Users\wangxihe\.m2\repository\com\netflix\netflix-commons\netflix-statistics\0.1.1\netflix-statistics-0.1.1.jar;C:\Users\wangxihe\.m2\repository\io\reactivex\rxjava\1.3.8\rxjava-1.3.8.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-openfeign-core\2.2.0.RELEASE\spring-cloud-openfeign-core-2.2.0.RELEASE.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.4.1\spring-boot-autoconfigure-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\boot\spring-boot-starter-aop\2.4.1\spring-boot-starter-aop-2.4.1.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-aop\5.3.2\spring-aop-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-beans\5.3.2\spring-beans-5.3.2.jar;C:\Users\wangxihe\.m2\repository\org\aspectj\aspectjweaver\1.9.6\aspectjweaver-1.9.6.jar;C:\Users\wangxihe\.m2\repository\io\github\openfeign\form\feign-form-spring\3.8.0\feign-form-spring-3.8.0.jar;C:\Users\wangxihe\.m2\repository\io\github\openfeign\form\feign-form\3.8.0\feign-form-3.8.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\spring-web\5.3.2\spring-web-5.3.2.jar;C:\Users\wangxihe\.m2\repository\commons-fileupload\commons-fileupload\1.4\commons-fileupload-1.4.jar;C:\Users\wangxihe\.m2\repository\commons-io\commons-io\2.2\commons-io-2.2.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-starter-config\3.0.0\spring-cloud-starter-config-3.0.0.jar;C:\Users\wangxihe\.m2\repository\org\springframework\cloud\spring-cloud-config-client\3.0.0\spring-cloud-config-client-3.0.0.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.11.3\jackson-annotations-2.11.3.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.11.3\jackson-databind-2.11.3.jar;C:\Users\wangxihe\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.11.3\jackson-core-2.11.3.jar com.example.clouddemo.ClouddemoApplication

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.4.1)

2021-01-03 11:41:21.534  INFO 11296 --- [           main] c.e.clouddemo.ClouddemoApplication       : Starting ClouddemoApplication using Java 1.8.0_251 on LAPTOP-NAVGH9HS with PID 11296 (D:\WorkSpace\Java\clouddemo\target\classes started by wangxihe in D:\WorkSpace\Java\clouddemo)
2021-01-03 11:41:21.545  INFO 11296 --- [           main] c.e.clouddemo.ClouddemoApplication       : No active profile set, falling back to default profiles: default
2021-01-03 11:41:22.668 ERROR 11296 --- [           main] o.s.boot.SpringApplication               : Application run failed

java.lang.IllegalArgumentException: Could not find class [org.springframework.boot.actuate.autoconfigure.health.HealthIndicatorAutoConfiguration]
	at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:334) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.core.annotation.TypeMappedAnnotation.adapt(TypeMappedAnnotation.java:446) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.core.annotation.TypeMappedAnnotation.getValue(TypeMappedAnnotation.java:369) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.core.annotation.TypeMappedAnnotation.asMap(TypeMappedAnnotation.java:284) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.core.annotation.AbstractMergedAnnotation.asAnnotationAttributes(AbstractMergedAnnotation.java:193) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.core.type.AnnotatedTypeMetadata.getAnnotationAttributes(AnnotatedTypeMetadata.java:106) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.AnnotationConfigUtils.attributesFor(AnnotationConfigUtils.java:285) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.AnnotationBeanNameGenerator.determineBeanNameFromAnnotation(AnnotationBeanNameGenerator.java:102) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.AnnotationBeanNameGenerator.generateBeanName(AnnotationBeanNameGenerator.java:81) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.registerBeanDefinitionForImportedConfigurationClass(ConfigurationClassBeanDefinitionReader.java:169) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:150) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:129) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:348) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:252) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:285) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:99) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:751) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:569) ~[spring-context-5.3.2.jar:5.3.2]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) [spring-boot-2.4.1.jar:2.4.1]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) [spring-boot-2.4.1.jar:2.4.1]
	at com.example.clouddemo.ClouddemoApplication.main(ClouddemoApplication.java:17) [classes/:na]
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.actuate.autoconfigure.health.HealthIndicatorAutoConfiguration
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_251]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_251]
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_251]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_251]
	at java.lang.Class.forName0(Native Method) ~[na:1.8.0_251]
	at java.lang.Class.forName(Class.java:348) ~[na:1.8.0_251]
	at org.springframework.util.ClassUtils.forName(ClassUtils.java:284) ~[spring-core-5.3.2.jar:5.3.2]
	at org.springframework.util.ClassUtils.resolveClassName(ClassUtils.java:324) ~[spring-core-5.3.2.jar:5.3.2]
	... 25 common frames omitted


Process finished with exit code 1

看到[org.springframework.boot.actuate.autoconfigure.health.HealthIndicatorAutoConfiguration]的时候我的第一反应是我的哪个config文件写错了，仔细检查了一遍并没有发现问题。
然后我又看到了Could not find class，于是失了智去检查是不是误用了.class，也没有发现问题。
最后查看pom.xml文件，发现缺少了Spring Cloud的依赖，添加依赖，问题解决。
PS：Spring Cloud版本不对或许也会引起这个问题，可以尝试把自己的版本调高一点。