1、在项目里引入依赖

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <version>2.5.9</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
                <version>2.5.9</version>
            </dependency>
            <dependency>
                <groupId>io.micrometer</groupId>
                <artifactId>micrometer-registry-prometheus</artifactId>
                <version>1.6</version>
            </dependency>

2、在项目启动主类添加如下来监控JVM

 @Bean
    MeterRegistryCustomizer<MeterRegistry> configurer(@Value("${spring.application.name}") String applicationName){
        return registry -> registry.config().commonTags("application", applicationName);
    }

3、项目配置文件

management:
  server:
    port: 18088
  endpoints:
    web:
      exposure:
        include: '*'
  metrics:
    tags:
      application: ${spring.application.name}

4、prometheus配置文件

job_name: "test_admin"
    metrics_path: /actuator/prometheus
    scrape_interval: 5s
    basic_auth: # Spring Security basic auth
       username: 'actuator'
       password: 'actuator'
    static_configs:
      - targets: ["192.168.1.107:18088"]