解决springcloud eureka+ribbon的依赖及版本问题

• 在我用RestTemplate+Ribbon实现负载均衡时遇到启动类无法启动问题，主要是ribbon的依赖问题。
• 这是spring cloud eureka客户端的依赖版本

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
        dependency>

        
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-ribbonartifactId>
            <version>1.4.7.RELEASEversion>
        dependency>

• 启动类报错如下：

 .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.5.2)

2021-07-14 14:35:23.619  INFO 1048 --- [           main] c.e.e.EurekaConsumerApplication          : Starting EurekaConsumerApplication using Java 11.0.7 on GAOSONG with PID 1048 (D:\IdeaProject\springcloud-eureka\eureka-consumer\target\classes started by GAOSONG in D:\IdeaProject\springcloud-eureka)
2021-07-14 14:35:23.622  INFO 1048 --- [           main] c.e.e.EurekaConsumerApplication          : No active profile set, falling back to default profiles: default
2021-07-14 14:35:24.190  WARN 1048 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [com.example.eurekaconsumer.EurekaConsumerApplication]; nested exception is java.io.FileNotFoundException: class path resource [org/springframework/boot/autoconfigure/web/ServerPropertiesAutoConfiguration.class] cannot be opened because it does not exist
2021-07-14 14:35:24.200  INFO 1048 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-07-14 14:35:24.220 ERROR 1048 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [com.example.eurekaconsumer.EurekaConsumerApplication]; nested exception is java.io.FileNotFoundException: class path resource [org/springframework/boot/autoconfigure/web/ServerPropertiesAutoConfiguration.class] cannot be opened because it does not exist
	at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:610) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.access$800(ConfigurationClassParser.java:111) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorGroupingHandler.lambda$processGroupImports$1(ConfigurationClassParser.java:812) ~[spring-context-5.3.8.jar:5.3.8]
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1540) ~[na:na]
	at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorGroupingHandler.processGroupImports(ConfigurationClassParser.java:809) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser$DeferredImportSelectorHandler.process(ConfigurationClassParser.java:780) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:193) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:247) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.2.jar:2.5.2]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.2.jar:2.5.2]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.2.jar:2.5.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.2.jar:2.5.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.2.jar:2.5.2]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.2.jar:2.5.2]
	at com.example.eurekaconsumer.EurekaConsumerApplication.main(EurekaConsumerApplication.java:13) ~[classes/:na]
Caused by: java.io.FileNotFoundException: class path resource [org/springframework/boot/autoconfigure/web/ServerPropertiesAutoConfiguration.class] cannot be opened because it does not exist
	at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:187) ~[spring-core-5.3.8.jar:5.3.8]
	at org.springframework.core.type.classreading.SimpleMetadataReader.getClassReader(SimpleMetadataReader.java:55) ~[spring-core-5.3.8.jar:5.3.8]
	at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:49) ~[spring-core-5.3.8.jar:5.3.8]
	at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103) ~[spring-core-5.3.8.jar:5.3.8]
	at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.createMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:86) ~[spring-boot-2.5.2.jar:2.5.2]
	at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.getMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:73) ~[spring-boot-2.5.2.jar:2.5.2]
	at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:81) ~[spring-core-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.asSourceClass(ConfigurationClassParser.java:696) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser$SourceClass.getRelated(ConfigurationClassParser.java:1090) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser$SourceClass.getAnnotationAttributes(ConfigurationClassParser.java:1071) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.collectImports(ConfigurationClassParser.java:549) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:522) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:311) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:250) ~[spring-context-5.3.8.jar:5.3.8]
	at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:600) ~[spring-context-5.3.8.jar:5.3.8]
	... 19 common frames omitted


Process finished with exit code 1

• 我的解决方案：
  将ribbon的依赖spring-cloud-starter-ribbon换成spring-cloud-starter-netflix-ribbon

<dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-netflix-ribbonartifactId>
            <version>2.2.9.RELEASEversion>
dependency>

• 启动成功

.   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.5.2)

2021-07-14 14:46:59.190  INFO 2476 --- [           main] c.e.e.EurekaConsumerApplication          : Starting EurekaConsumerApplication using Java 11.0.7 on GAOSONG with PID 2476 (D:\IdeaProject\springcloud-eureka\eureka-consumer\target\classes started by GAOSONG in D:\IdeaProject\springcloud-eureka)
2021-07-14 14:46:59.193  INFO 2476 --- [           main] c.e.e.EurekaConsumerApplication          : No active profile set, falling back to default profiles: default
2021-07-14 14:47:00.085  INFO 2476 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=1df64aca-efe5-343e-949f-6445e07aaad2
2021-07-14 14:47:00.386  INFO 2476 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8762 (http)
2021-07-14 14:47:00.396  INFO 2476 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2021-07-14 14:47:00.396  INFO 2476 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.48]
2021-07-14 14:47:00.582  INFO 2476 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2021-07-14 14:47:00.582  INFO 2476 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1341 ms
2021-07-14 14:47:00.684  WARN 2476 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2021-07-14 14:47:00.684  INFO 2476 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2021-07-14 14:47:00.687  WARN 2476 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2021-07-14 14:47:00.688  INFO 2476 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2021-07-14 14:47:01.459  INFO 2476 --- [           main] DiscoveryClientOptionalArgsConfiguration : Eureka HTTP Client uses Jersey
2021-07-14 14:47:01.916  WARN 2476 --- [           main] iguration$LoadBalancerCaffeineWarnLogger : Spring Cloud LoadBalancer is currently working with the default cache. You can switch to using Caffeine cache, by adding it and org.springframework.cache.caffeine.CaffeineCacheManager to the classpath.
2021-07-14 14:47:01.978  INFO 2476 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2021-07-14 14:47:02.011  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2021-07-14 14:47:02.203  INFO 2476 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2021-07-14 14:47:02.204  INFO 2476 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2021-07-14 14:47:02.337  INFO 2476 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2021-07-14 14:47:02.337  INFO 2476 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2021-07-14 14:47:02.476  INFO 2476 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2021-07-14 14:47:02.495  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2021-07-14 14:47:02.495  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2021-07-14 14:47:02.495  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2021-07-14 14:47:02.495  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2021-07-14 14:47:02.495  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2021-07-14 14:47:02.495  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2021-07-14 14:47:02.495  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2021-07-14 14:47:02.657  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : The response status is 200
2021-07-14 14:47:02.660  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Starting heartbeat executor: renew interval is: 30
2021-07-14 14:47:02.663  INFO 2476 --- [           main] c.n.discovery.InstanceInfoReplicator     : InstanceInfoReplicator onDemand update allowed rate per min is 4
2021-07-14 14:47:02.667  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1626245222666 with initial instances count: 2
2021-07-14 14:47:02.670  INFO 2476 --- [           main] o.s.c.n.e.s.EurekaServiceRegistry        : Registering application EUREKA-CONSUMER with eureka with status UP
2021-07-14 14:47:02.670  INFO 2476 --- [           main] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1626245222670, current=UP, previous=STARTING]
2021-07-14 14:47:02.673  INFO 2476 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_EUREKA-CONSUMER/GAOSONG:eureka-consumer:8762: registering service...
2021-07-14 14:47:02.709  INFO 2476 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8762 (http) with context path ''
2021-07-14 14:47:02.710  INFO 2476 --- [           main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8762
2021-07-14 14:47:02.726  INFO 2476 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_EUREKA-CONSUMER/GAOSONG:eureka-consumer:8762 - registration status: 204
2021-07-14 14:47:03.142  INFO 2476 --- [           main] c.e.e.EurekaConsumerApplication          : Started EurekaConsumerApplication in 5.517 seconds (JVM running for 7.434)