Prometheus配置不适用于Spring boot 2.3.0: ClassNotFoundException: io.micrometer.prometheus.HistogramFlavor

Question

应用程序在2.2.6版本下工作正常，但当应用程序升级到spring boot 2.3.0的最新版本时，它停止工作并在启动期间失败。

2020-05-20T08:43:04.408+01:00 [APP/PROC/WEB/0] [OUT] 2020-05-20 07:43:04.407 ERROR 15 --- [ main] o.s.b.web.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.UnsatisfiedDependencyException. Message: Error creating bean with name 'webMvcMetricsFilter' defined in class path resource [org/springframework/boot/actuate/autoconfigure/metrics/web/servlet/WebMvcMetricsAutoConfiguration.class]: Unsatisfied dependency expressed through method 'webMvcMetricsFilter' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'compositeMeterRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/metrics/CompositeMeterRegistryConfiguration.class]: Unsatisfied dependency expressed through method 'compositeMeterRegistry' parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'prometheusMeterRegistry' defined in class path resource [org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfiguration.class]: Unsatisfied dependency expressed through method 'prometheusMeterRegistry' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'prometheusConfig' defined in class path resource [org/springframework/boot/actuate/autoconfigure/metrics/export/prometheus/PrometheusMetricsExportAutoConfiguration.class]: Unsatisfied dependency expressed through method 'prometheusConfig' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'management.metrics.export.prometheus-org.springframework.boot.actuate.autoconfigure.metrics.export.prometheus.PrometheusProperties': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.boot.actuate.autoconfigure.metrics.export.prometheus.PrometheusProperties] from ClassLoader [org.springframework.boot.loader.LaunchedURLClassLoader@4f3f5b24]

可以在开始跟踪的底部看到下面的类未找到异常。

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Answer 1

在您的特殊情况下，micrometer-registry-prometheus必须与spring boot的微米内核版本保持一致。之所以称为1.5.1，是因为Spring Boot (Actuator)在2.3.0版本中引入了该依赖项。

  implementation group: 'io.micrometer', name: 'micrometer-registry-prometheus', version: '1.5.1'

Answer 2

添加这个答案是因为我最初不理解

必须与spring boot的微米内核版本保持一致。

lestar cdog答案

micrometer registry prometheus软件包必须与io.microeter:micrometer core版本匹配。Io.microeter:微米-芯由弹簧执行器依赖性拉动。

您可以在IDE中检查io.microeter:micrometer core的版本

IntelliJ：项目窗口(cmd+ 1) ->外部库

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Answer 3

当查看您包含的部分日志文件时，在我看来，多个依赖项并不都在那里，也不能正常工作。请参阅Spring Boot关于使用依赖项管理器的建议：https://docs.spring.io/spring-boot/docs/current/reference/html/using-spring-boot.html#using-boot-build-systems

在升级时，检查版本之间的releasenotes/changelog总是有用的。

2.3的

• 发行说明: 2.2.7到2.3.0的https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.3-Release-Notes
• Changelog请参阅：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.3.0-Configuration-Changelog

如果您需要更多帮助，请提供有关配置的信息；

1. 您的pom-file(或其他依赖项管理文件)
2. 'prometheus configuration‘，您认为这是导致

问题的原因