Question

我正在尝试将基于Spring Boot + Spring Cloud的项目升级到Brixton.M4，原因是由于zuul在与SC的Brixton打包的版本中缺乏对PATCH（https://github.com/spring-cloud/spring-cloud-netflix/issues/412）的支持.M3。我启用了spring-boot-starter-actuator和spring-cloud-starter-zuul，但现在容器无法启动以下错误：

No qualifying bean of type [org.springframework.boot.actuate.metrics.CounterService] is defined:
expected single matching bean but found 2: dropwizardMetricServices,servoMetricServices

更多stacktrace：

 Could not autowire field: private org.springframework.boot.actuate.metrics.CounterService org.springframework.boot.actuate.autoconfigure.MetricFilterAutoConfiguration.counterService; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: 
No qualifying bean of type [org.springframework.boot.actuate.metrics.CounterService] is defined: expected single matching bean but found 2: dropwizardMetricServices,servoMetricServices
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 34 more 
Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [org.springframework.boot.actuate.metrics.CounterService] is defined: expected single matching bean but found 2: dropwizardMetricServices,servoMetricServices
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1126)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
... 36 more

类路径中确实有两个CounterService类型的bean：DropwizardMetricServices打包在spring-boot-actuator-1.3.1.RELEASE.jar和位于spring-cloud-netflix-core-1.1.0.M4.jar的ServoMetricServices中

有没有办法禁用其中一个？我检查了文档，但我找不到任何明显的方法。

谢谢！

Answer 1

对上述答案的小修正

@Bean
@Primary
public DropwizardMetricServices dropwizardMetricServices(MetricRegistry metricRegistry){
    return new DropwizardMetricServices(metricRegistry);
}

Answer 2

您可以在java配置文件中使用@Primary，如下所示：

@Bean
@Primary
public DropwizardMetricServices dropwizardMetricServices(){
    return new DropwizardMetricServices();
}

Brixton.M4 + zuul：预期的单个匹配bean但找到2：dropwizardMetricServices，servoMetricServices

2 个答案: