The bean 'proxyRequestHelper', defined in class path resource [org/springframework/cloud/netflix/zuu_for bean ' ' since there is already-优快云博客

本文记录了一次在使用SpringCloud Zuul网关时遇到的启动错误，详细解析了错误原因并提供了解决方案，即调整SpringBoot版本以避免与SpringCloud版本不兼容导致的bean定义冲突。

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SpringCloud启动zuul时，报如下错误：

查询发现是Springboot的版本问题，我这里springbood版本是2.1.，SpringCloud是F版本。把SpringBoot版本降到2.0.6即可。

2019-03-06 22:26:23.134  WARN 12080 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name 'proxyRequestHelper' defined in class path resource [org/springframework/cloud/netflix/zuul/ZuulProxyAutoConfiguration$NoActuatorConfiguration.class]: Cannot register bean definition [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.cloud.netflix.zuul.ZuulProxyAutoConfiguration$NoActuatorConfiguration; factoryMethodName=proxyRequestHelper; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/cloud/netflix/zuul/ZuulProxyAutoConfiguration$NoActuatorConfiguration.class]] for bean 'proxyRequestHelper': There is already [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.cloud.netflix.zuul.ZuulProxyAutoConfiguration$EndpointConfiguration; factoryMethodName=proxyRequestHelper; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/cloud/netflix/zuul/ZuulProxyAutoConfiguration$EndpointConfiguration.class]] bound.
2019-03-06 22:26:23.142  INFO 12080 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-03-06 22:26:23.145 ERROR 12080 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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APPLICATION FAILED TO START
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Description:

The bean 'proxyRequestHelper', defined in class path resource [org/springframework/cloud/netflix/zuul/ZuulProxyAutoConfiguration$NoActuatorConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/cloud/netflix/zuul/ZuulProxyAutoConfiguration$EndpointConfiguration.class] and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

Disconnected from the target VM, address: '127.0.0.1:61581', transport: 'socket'

Process finished with exit code 1