将来自spring应用程序的度量公开给prometheus，而不使用spring-boot执行器

import io.micrometer.core.instrument.Clock;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.prometheus.PrometheusConfig;
import io.micrometer.prometheus.PrometheusMeterRegistry;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MetricsConfig {

    @Bean
    public PrometheusMeterRegistry prometheusMeterRegistry() {
        PrometheusConfig config = new PrometheusConfig() {
            @Override
            public String get(String key) {
                // 配置Prometheus的相关参数，如端口号等
                return null;
            }
        };

        return new PrometheusMeterRegistry(config, Clock.SYSTEM);
    }
}

import io.micrometer.core.instrument.MeterRegistry;
import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
import org.springframework.stereotype.Component;

@Component
@Endpoint(id = "prometheus")
public class PrometheusEndpoint {

    private final MeterRegistry meterRegistry;

    public PrometheusEndpoint(MeterRegistry meterRegistry) {
        this.meterRegistry = meterRegistry;
    }

    @ReadOperation
    public String scrape() {
        return meterRegistry.scrape();
    }
}