導入別人的springcloud 的eureka服務的時候唤衫，啟動報錯，報錯信息是：
2018-06-25 16:02:10.731 INFO 16576 --- [ main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@43195e57: startup date [Mon Jun 25 16:02:10 CST 2018]; root of context hierarchy
2018-06-25 16:02:11.015 INFO 16576 --- [ main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2018-06-25 16:02:11.045 INFO 16576 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'configurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$b43cc593] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.0.1.RELEASE)
2018-06-25 16:02:11.359 INFO 16576 --- [ main] com.test.spcloud.App : No active profile set, falling back to default profiles: default
2018-06-25 16:02:11.371 INFO 16576 --- [ main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1e8b7643: startup date [Mon Jun 25 16:02:11 CST 2018]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@43195e57
2018-06-25 16:02:11.930 INFO 16576 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=a48d0e97-5259-3c0a-9bd8-ebfa13ae3f42
2018-06-25 16:02:11.942 INFO 16576 --- [ main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2018-06-25 16:02:12.027 INFO 16576 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$b43cc593] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-06-25 16:02:12.415 INFO 16576 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-06-25 16:02:12.438 INFO 16576 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-06-25 16:02:12.439 INFO 16576 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.29
2018-06-25 16:02:12.447 INFO 16576 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : Loaded APR based Apache Tomcat Native library [1.2.16] using APR version [1.6.3].
2018-06-25 16:02:12.448 INFO 16576 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
2018-06-25 16:02:12.448 INFO 16576 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
2018-06-25 16:02:13.492 INFO 16576 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : OpenSSL successfully initialized [OpenSSL 1.0.2m 2 Nov 2017]
2018-06-25 16:02:13.599 INFO 16576 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-06-25 16:02:13.599 INFO 16576 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2228 ms
2018-06-25 16:02:13.972 ERROR 16576 --- [ost-startStop-1] o.s.b.web.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.UnsatisfiedDependencyException. Message: Error creating bean with name 'traceFilterRegistration' defined in class path resource [org/springframework/cloud/netflix/eureka/server/EurekaServerAutoConfiguration.class]: Unsatisfied dependency expressed through method 'traceFilterRegistration' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'javax.servlet.Filter' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Qualifier(value=httpTraceFilter)}
2018-06-25 16:02:13.997 INFO 16576 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2018-06-25 16:02:14.001 WARN 16576 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
2018-06-25 16:02:14.006 INFO 16576 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-06-25 16:02:14.092 ERROR 16576 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method traceFilterRegistration in org.springframework.cloud.netflix.eureka.server.EurekaServerAutoConfiguration required a bean of type 'javax.servlet.Filter' that could not be found.
- Bean method 'resourceUrlEncodingFilter' in 'FreeMarkerServletWebConfiguration' not loaded because @ConditionalOnEnabledResourceChain did not find class org.webjars.WebJarAssetLocator
Action:
Consider revisiting the conditions above or defining a bean of type 'javax.servlet.Filter' in your configuration.
搜了一下只找到一個辦法，而且非常粗魯：
rm -r $HOME/.m2
也就是刪除本地maven倉庫里面的所有東西盅弛，然后重新下載箩帚。沒找到好的辦法真友，只能這么干，掛機掛了很久才重新下載回來紧帕，結果還真的成功了锻狗。
參考的是https://github.com/spring-cloud/spring-cloud-netflix/issues/1491
