@ConditionalOnBean 不能与千分尺 MeterRegistry 一起正常工作

问题描述

我正在尝试使用千分尺从 Spring Boot 应用程序中公开指标。

以下配置由于某种原因不起作用:

@Configuration(proxyBeanMethods = false)
@AutoConfigureAfter({ MetricsAutoConfiguration.class,CompositeMeterRegistryAutoConfiguration.class })
@ConditionalOnClass(MeterRegistry.class)
@ConditionalOnBean(MeterRegistry.class)
public class SuperTestAutoConfig {
    @Bean
    public Object testBean() {
        return new Object();
    }
}

春天说:

SuperTestAutoConfig:
      Did not match:
         - @ConditionalOnBean (types: io.micrometer.core.instrument.MeterRegistry; SearchStrategy: all) did not find any beans of type io.micrometer.core.instrument.MeterRegistry (OnBeanCondition)
      Matched:
         - @ConditionalOnClass found required class 'io.micrometer.core.instrument.MeterRegistry' (OnClassCondition)

但是对于完全相同的带注释的配置 JvmMetricsAutoConfiguration 它可以完美运行:

@Configuration(proxyBeanMethods = false)
@AutoConfigureAfter({ MetricsAutoConfiguration.class,CompositeMeterRegistryAutoConfiguration.class })
@ConditionalOnClass(MeterRegistry.class)
@ConditionalOnBean(MeterRegistry.class)
public class JvmMetricsAutoConfiguration {}

日志说:

   JvmMetricsAutoConfiguration matched:
      - @ConditionalOnClass found required class 'io.micrometer.core.instrument.MeterRegistry' (OnClassCondition)
      - @ConditionalOnBean (types: io.micrometer.core.instrument.MeterRegistry; SearchStrategy: all) found bean 'prometheusMeterRegistry' (OnBeanCondition)

完整示例在这里https://filebin.net/gjxnwwksaqs1x8zg

解决方法

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