还没看视频，刚才按照文档写的:

@Component
public class HealthCheck implements HealthIndicator {


    @Override
    public Health health() {
        return Health.up().withDetail("health","ok").build();
    }
}

然后在application.properties中配置:

management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always

权限问题找了半天才处理完,又没有任何错误提示,有点太坑了..