1.Actuator是什么？

Actuator是spring boot下的一个模块，提供http (或JMX)端点来实现对应用程序的监视和管理、收集运行状况等功能。

2.简单集成 添加相关依赖

        org.springframework.bootspring-boot-starter-actuator

3.启动测试

http://localhost:8080/actuator

默认开放3个endpoint， /actuator /actuator/health /actuator/health/{*path}

4.开放所有endpoint 修改application.yml

management:server:port: 12345             # 端口默认=server.port 增加安全性endpoints:web:exposure:include: "*"        # 开放节点 * 开放所有 beans,.....# exclude: beans    # 禁止开放节点 * 禁止开放所有 beans,.....base-path: /control   # 自定义根路径  增加安全性endpoint:shutdown:enabled: true         # 打开shutdown端点 POST请求health:show-details: always  # 获得健康检查中所有指标的详细信息beans:cache:time-to-live: 100s  # 不带参数的端点请求会自动进行缓存#health:#defaults:#enabled: false       # 禁用所有自动健康检查#mongo:#enabled: false       # 禁用制定组件（mongo）自动健康检查

{"_links": {"self": {"href": "http://localhost/actuator","templated": false},"beans": {"href": "http://localhost/actuator/beans","templated": false},"caches-cache": {"href": "http://localhost/actuator/caches/{cache}","templated": true},"caches": {"href": "http://localhost/actuator/caches","templated": false},"health": {"href": "http://localhost/actuator/health","templated": false},"health-path": {"href": "http://localhost/actuator/health/{*path}","templated": true},"info": {"href": "http://localhost/actuator/info","templated": false},"conditions": {"href": "http://localhost/actuator/conditions","templated": false},"configprops": {"href": "http://localhost/actuator/configprops","templated": false},"configprops-prefix": {"href": "http://localhost/actuator/configprops/{prefix}","templated": true},"env": {"href": "http://localhost/actuator/env","templated": false},"env-toMatch": {"href": "http://localhost/actuator/env/{toMatch}","templated": true},"loggers": {"href": "http://localhost/actuator/loggers","templated": false},"loggers-name": {"href": "http://localhost/actuator/loggers/{name}","templated": true},"heapdump": {"href": "http://localhost/actuator/heapdump","templated": false},"threaddump": {"href": "http://localhost/actuator/threaddump","templated": false},"metrics-requiredMetricName": {"href": "http://localhost/actuator/metrics/{requiredMetricName}","templated": true},"metrics": {"href": "http://localhost/actuator/metrics","templated": false},"scheduledtasks": {"href": "http://localhost/actuator/scheduledtasks","templated": false},"mappings": {"href": "http://localhost/actuator/mappings","templated": false}}
}

5.各个endpoint 介绍
5.1）beans：注册到Sprng容器中的Bean对象集合
5.2）caches：缓存信息
5.3）health：应用的健康状态
5.4）info：应用的基本信息，需要手工配置
5.5）conditions：自动配置生效的条件
5.6）configprops：获取所有的配置属性
5.7）auditevents：显示应用暴露的审计事件 
5.8）metrics：应用多样的度量信息                          查看某项的度量信息/metric/jvm.buffer.count
5.9）loggers：日志配置                                            loggers/root
5.10）httptrace：HTTP足迹，显示最近100个HTTP request/repsponse
5.11）env：当前的环境特性
5.12）flyway：显示数据库迁移路径的详细信息
5.13）shutdown：关闭应用                                        唯一POST请求的节点
5.14）mappings：所有的@RequestMapping路径
5.15）scheduledtask：应用中的调度任务
5.16）threaddump：线程信息
5.17）heapdump：JVM堆dump

6.端点保护

6.1添加依赖

       org.springframework.bootspring-boot-starter-security

6.2添加配置

spring:security:user:name: adminpassword: adminroles: admin

6.3配置拦截地址

package com.example.hellospringboot.config;import org.springframework.boot.actuate.autoconfigure.security.servlet.EndpointRequest;
import org.springframework.boot.actuate.context.ShutdownEndpoint;
import org.springframework.boot.autoconfigure.security.servlet.PathRequest;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;@Configuration
public class ActuatorSecurityConfig extends WebSecurityConfigurerAdapter {@Overrideprotected void configure(HttpSecurity http) throws Exception {http.authorizeRequests().requestMatchers(EndpointRequest.to(ShutdownEndpoint.class)).hasRole("admin").requestMatchers(EndpointRequest.toAnyEndpoint()).permitAll().requestMatchers(PathRequest.toStaticResources().atCommonLocations()).permitAll().antMatchers("/control*").permitAll().antMatchers("/control**").authenticated().and().httpBasic();}
}

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