今天碰到一个版本的问题，搭建gateway、idea运行。maven工程来的。

起初运行一直卡在这，无法进入SpringBoot启动的界面

java.lang.IllegalStateException: Error processing condition on org.springframework.cloud.gateway.config.GatewayAutoConfiguration.propertiesRouteDefinitionLocatorat org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:64) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:181) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:141) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:117) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:327) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:232) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:705) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:67) ~[spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.4.RELEASE.jar:2.1.4.RELEASE]at com.juneyaoair.HoceGatewayApplication.main(HoceGatewayApplication.java:12) [classes/:na]
Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.gateway.config.GatewayAutoConfiguration$NettyConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:507) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:404) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:389) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:447) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660) ~[na:1.8.0_131]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:738) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:679) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:647) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1518) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1023) ~[spring-beans-5.1.6.RELEASE.jar:5.1.6.RELEASE]at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanTypeForNonAliasDefinition(BeanTypeRegistry.java:195) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanTypeForNonAliasDefinition(BeanTypeRegistry.java:159) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.addBeanType(BeanTypeRegistry.java:152) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.updateTypesIfNecessary(BeanTypeRegistry.java:140) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at java.util.Iterator.forEachRemaining(Iterator.java:116) ~[na:1.8.0_131]at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.updateTypesIfNecessary(BeanTypeRegistry.java:135) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.BeanTypeRegistry.getNamesForType(BeanTypeRegistry.java:97) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.OnBeanCondition.collectBeanNamesForType(OnBeanCondition.java:298) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:289) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getBeanNamesForType(OnBeanCondition.java:278) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchingBeans(OnBeanCondition.java:189) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:160) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.1.4.RELEASE.jar:2.1.4.RELEASE]... 17 common frames omitted

在网上，看到有很多种解决方法，但是都没有运行起来。

首先检查xml 相互之间版本依赖关系，最终运行成功！


```xml
<dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId><version>2.1.5.RELEASE</version></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-gateway</artifactId><version>2.1.5.RELEASE</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency>
</dependencies>


```java.   ____          _            __ _ _/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \\\/  ___)| |_)| | | | | || (_| |  ) ) ) )'  |____| .__|_| |_|_| |_\__, | / / / /=========|_|==============|___/=/_/_/_/:: Spring Boot ::        (v2.1.5.RELEASE)2021-12-27 11:59:27.443  INFO 12609 --- [           main] com.juneyaoair.HoceGatewayApplication    : The following profiles are active: dev
2021-12-27 11:59:28.039  WARN 12609 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.
2021-12-27 11:59:28.197  INFO 12609 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=49ffd985-fab0-325f-8812-30727de898fc
2021-12-27 11:59:28.394  WARN 12609 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2021-12-27 11:59:28.394  INFO 12609 --- [           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.
2021-12-27 11:59:28.398  WARN 12609 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2021-12-27 11:59:28.398  INFO 12609 --- [           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.
2021-12-27 11:59:29.008  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [After]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Before]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Between]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Cookie]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Header]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Host]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Method]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Path]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Query]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [ReadBodyPredicateFactory]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [RemoteAddr]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [Weight]
2021-12-27 11:59:29.009  INFO 12609 --- [           main] o.s.c.g.r.RouteDefinitionRouteLocator    : Loaded RoutePredicateFactory [CloudFoundryRouteService]
2021-12-27 11:59:29.353  INFO 12609 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 20 endpoint(s) beneath base path '/actuator'
2021-12-27 11:59:29.728  INFO 12609 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2021-12-27 11:59:29.758  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2021-12-27 11:59:29.933  INFO 12609 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2021-12-27 11:59:29.933  INFO 12609 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2021-12-27 11:59:30.040  INFO 12609 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2021-12-27 11:59:30.040  INFO 12609 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2021-12-27 11:59:30.246  INFO 12609 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2021-12-27 11:59:30.261  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2021-12-27 11:59:30.261  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2021-12-27 11:59:30.261  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2021-12-27 11:59:30.261  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2021-12-27 11:59:30.261  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2021-12-27 11:59:30.261  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2021-12-27 11:59:30.261  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2021-12-27 11:59:30.512  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : The response status is 200
2021-12-27 11:59:30.514  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Starting heartbeat executor: renew interval is: 30
2021-12-27 11:59:30.518  INFO 12609 --- [           main] c.n.discovery.InstanceInfoReplicator     : InstanceInfoReplicator onDemand update allowed rate per min is 4
2021-12-27 11:59:30.522  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1640577570521 with initial instances count: 9
2021-12-27 11:59:30.523  INFO 12609 --- [           main] o.s.c.n.e.s.EurekaServiceRegistry        : Registering application HOCE-GATEWAY with eureka with status UP
2021-12-27 11:59:30.523  INFO 12609 --- [           main] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1640577570523, current=UP, previous=STARTING]
2021-12-27 11:59:30.525  INFO 12609 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_HOCE-GATEWAY/172.19.131.110:hoce-gateway:8081: registering service...
2021-12-27 11:59:30.562  INFO 12609 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_HOCE-GATEWAY/172.19.131.110:hoce-gateway:8081 - registration status: 204
2021-12-27 11:59:30.723  INFO 12609 --- [           main] o.s.b.web.embedded.netty.NettyWebServer  : Netty started on port(s): 8081
2021-12-27 11:59:30.724  INFO 12609 --- [           main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8081
2021-12-27 11:59:30.728  INFO 12609 --- [           main] com.juneyaoair.HoceGatewayApplication    : Started HoceGatewayApplication in 4.313 seconds (JVM running for 5.107)

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