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我正在为 clickhouse 构建一个千分尺插件。我想@AutoConfigureAfter没有像我预期的那样工作，并告诉你原因。

我写了 ClickhouseMetricsExportAutoConfiguration 类，如下所示

@Configuration(proxyBeanMethods = false)
@AutoConfigureBefore({CompositeMeterRegistryAutoConfiguration.class,
    SimpleMetricsExportAutoConfiguration.class})
@AutoConfigureAfter(MetricsAutoConfiguration.class)
@ConditionalOnBean(Clock.class)
@ConditionalOnClass(ClickhouseMeterRegistry.class)
@ConditionalOnProperty(prefix = "management.metrics.export.clickhouse", name = "enabled", havingValue = "true", matchIfMissing = true)
@EnableConfigurationProperties(ClickhouseProperties.class)
public class ClickhouseMetricsExportAutoConfiguration {

    private final ClickhouseProperties properties;

    public ClickhouseMetricsExportAutoConfiguration(
        ClickhouseProperties properties) {
        this.properties = properties;
    }

    @Bean
    @ConditionalOnMissingBean
    public ClickhouseConfig clickhouseConfig () {
        return new ClickhousePropertiesConfigAdapter(this.properties);
    }

    @Bean
    @ConditionalOnMissingBean
    public ClickhouseMeterRegistry clickhouseMeterRegistry (ClickhouseConfig clickhouseConfig, Clock clock, ClickhouseProperties properties) {
        return ClickhouseMeterRegistry.builder(clickhouseConfig)
            .clock(clock)
            .httpClient(
                new HttpUrlConnectionSender(this.properties.getConnectTimeout(), this.properties.getReadTimeout())
            ).build();
    }
}

该代码与运行良好的InfluxMetricsExportAutoConfiguration几乎相同。

当我运行代码时，我在调试日志中发现了这条消息。

# In 'Negative matches' section
   ClickhouseMetricsExportAutoConfiguration:
      Did not match:
         - @ConditionalOnBean (types: io.micrometer.core.instrument.Clock; SearchStrategy: all) did not find any beans of type io.micrometer.core.instrument.Clock (OnBeanCondition)
      Matched:
         - @ConditionalOnClass found required class 'com.widerplanet.dpa.tazza.goni.supports.clickhouse.ClickhouseMeterRegistry' (OnClassCondition)
         - @ConditionalOnProperty (management.metrics.export.clickhouse.enabled=true) matched (OnPropertyCondition)

Clock所以总而言之，我当时没有豆子。但是它应该在注册时MetricsAutoConfiguration注册。因为 ...

# In 'positive matches' section
   MetricsAutoConfiguration#micrometerClock matched:
      - @ConditionalOnMissingBean (types: io.micrometer.core.instrument.Clock; SearchStrategy: all) did not find any beans (OnBeanCondition)

因此，我猜ClickhouseMetricsExportConfigurationbean 的构造比MetricsAutoConfiguation即使有@AutoConfigureAfter(MetricsAutoConfiguration.class)声明还要早。

我想知道如何解决这个问题。谢谢

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