health检查一般用于spring cloud注册中心的存活检查，比如spring cloud consul配置

spring:cloud:consul:discovery:register: trueinstance-id: ${spring.application.name}:${server.port}service-name: ${spring.application.name}port: ${server.port}healthCheckPath: /actuator/healthhealthCheckInterval: 15sconfig:discovery:enabled: trueservice-id: ${spring.application.name}:${server.port}fail-fast: true

实现方式

pom引入

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-actuator</artifactId>

</dependency>

检查页面

/actuator/health

返回

{"status":"UP"}

如果返回为down，监听

org.springframework.boot.actuate.health.HealthEndpoint

中的health()方法，找到down的连接。