我们都知道Spring Boot是一个用于快速开发Java Web的框架，不需要太多的配置即可使用Spring的大量功能。Spring Boot遵循着“约定大于配置”的原则，许多功能使用默认的配置即可。这样的做法好处在于我们不需要像使用Spring那样编写一大堆的XML配置代码，但过于简单的配置过程会让我们在了解各种依赖，配置之间的关系过程上带来一些困难。不过没关系，在Spring Boot中，我们可以使用Actuator来监控应用，Actuator提供了一系列的RESTful API让我们可以更为细致的了解各种信息。

引入Actuator

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

配置Actuator

server:
  port: 80
management:
  security:
    enabled: false #关掉安全认证
  port: 80
  context-path: /monitor #actuator的访问路径
endpoints:
  shutdown:
    enabled: true

配置中关闭了安全认证的功能，如果需要开启这个功能的话还需引入spring-boot-starter-security依赖。除了使用Spring Security来开启监控路径安全认证外，还可以使用Shiro对监控路径进行权限控制。

监控的端口和应用一致，配置context-path为/monitor，这样可以避免和自己应用的路径映射地址重复。

endpoints.shutdown.enabled: true提供了使用post请求来关闭Spring Boot应用的功能。

Actuator接口列表

Actuator提供了13个接口，可以分为三大类：配置接口、度量接口和其它接口，具体如下表所示：

接口使用示例

autoconfig

显示所有自动装配类的报告，以及是什么原因导致自动装配成功或者不成功。在浏览器输入：http://localhost/monitor/autoconfig，输出如下（截取部分）：

{
    "positiveMatches": {
        "AuditAutoConfiguration#auditListener": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.audit.listener.AbstractAuditListener; SearchStrategy: all) did not find any beans"
        }],
        "AuditAutoConfiguration.AuditEventRepositoryConfiguration": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.audit.AuditEventRepository; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#autoConfigurationReportEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnBean (types: org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport; SearchStrategy: all) found bean 'autoConfigurationReport'; @ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.AutoConfigurationReportEndpoint; SearchStrategy: current) did not find any beans"
        }],
        "EndpointAutoConfiguration#beansEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.BeansEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#configurationPropertiesReportEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.ConfigurationPropertiesReportEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#dumpEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.DumpEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#environmentEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.EnvironmentEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#healthEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.HealthEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#infoEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.InfoEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#loggersEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnBean (types: org.springframework.boot.logging.LoggingSystem; SearchStrategy: all) found bean 'springBootLoggingSystem'; @ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.LoggersEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#metricsEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.MetricsEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#shutdownEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.ShutdownEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration#traceEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.TraceEndpoint; SearchStrategy: all) did not find any beans"
        }],
        "EndpointAutoConfiguration.RequestMappingEndpointConfiguration": [{
            "condition": "OnClassCondition",
            "message": "@ConditionalOnClass found required class 'org.springframework.web.servlet.handler.AbstractHandlerMethodMapping'; @ConditionalOnMissingClass did not find unwanted class"
        }],
        "EndpointAutoConfiguration.RequestMappingEndpointConfiguration#requestMappingEndpoint": [{
            "condition": "OnBeanCondition",
            "message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.endpoint.RequestMappingEndpoint; SearchStrategy: all) did not find any beans"
        }],
...
}

beans

查看Spring 容器管理的Bean,访问http://localhost/monitor/beans，输出如下（截取部分）：

[{
    "context": "application:80",
    "parent": null,
    "beans": [{
        "bean": "demoApplication",
        "aliases": [],
        "scope": "singleton",
        "type": "com.springboot.demo.DemoApplication$$EnhancerBySpringCGLIB$$77e6b2b4",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.core.type.classreading.CachingMetadataReaderFactory",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration$$EnhancerBySpringCGLIB$$dc9af024",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.condition.BeanTypeRegistry",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.condition.BeanTypeRegistry",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "propertySourcesPlaceholderConfigurer",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.context.support.PropertySourcesPlaceholderConfigurer",
        "resource": "class path resource [org/springframework/boot/autoconfigure/context/PropertyPlaceholderAutoConfiguration.class]",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$Jackson2ObjectMapperBuilderCustomizerConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$Jackson2ObjectMapperBuilderCustomizerConfiguration$$EnhancerBySpringCGLIB$$a4dba584",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "standardJacksonObjectMapperBuilderCustomizer",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$Jackson2ObjectMapperBuilderCustomizerConfiguration$StandardJackson2ObjectMapperBuilderCustomizer",
        "resource": "class path resource [org/springframework/boot/autoconfigure/jackson/JacksonAutoConfiguration$Jackson2ObjectMapperBuilderCustomizerConfiguration.class]",
        "dependencies": ["org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@78f30883", "spring.jackson-org.springframework.boot.autoconfigure.jackson.JacksonProperties"]
    }, {
        "bean": "spring.jackson-org.springframework.boot.autoconfigure.jackson.JacksonProperties",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.jackson.JacksonProperties",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor",
        "resource": "null",
        "dependencies": ["org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.store"]
    }, {
        "bean": "org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.store",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.context.properties.ConfigurationBeanFactoryMetaData",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperBuilderConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperBuilderConfiguration$$EnhancerBySpringCGLIB$$e9c4bf95",
        "resource": "null",
        "dependencies": ["org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@78f30883"]
    }, {
        "bean": "jacksonObjectMapperBuilder",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.http.converter.json.Jackson2ObjectMapperBuilder",
        "resource": "class path resource [org/springframework/boot/autoconfigure/jackson/JacksonAutoConfiguration$JacksonObjectMapperBuilderConfiguration.class]",
        "dependencies": ["standardJacksonObjectMapperBuilderCustomizer"]
    }, {
        "bean": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$JacksonObjectMapperConfiguration$$EnhancerBySpringCGLIB$$3777fd7c",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "jacksonObjectMapper",
        "aliases": [],
        "scope": "singleton",
        "type": "com.fasterxml.jackson.databind.ObjectMapper",
        "resource": "class path resource [org/springframework/boot/autoconfigure/jackson/JacksonAutoConfiguration$JacksonObjectMapperConfiguration.class]",
        "dependencies": ["jacksonObjectMapperBuilder"]
    }, {
        "bean": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration$$EnhancerBySpringCGLIB$$19839b0b",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "jsonComponentModule",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.jackson.JsonComponentModule",
        "resource": "class path resource [org/springframework/boot/autoconfigure/jackson/JacksonAutoConfiguration.class]",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration$TomcatWebSocketConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration$TomcatWebSocketConfiguration$$EnhancerBySpringCGLIB$$ab6fe14",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "websocketContainerCustomizer",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.websocket.TomcatWebSocketContainerCustomizer",
        "resource": "class path resource [org/springframework/boot/autoconfigure/websocket/WebSocketAutoConfiguration$TomcatWebSocketConfiguration.class]",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration$$EnhancerBySpringCGLIB$$ee951243",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration$EmbeddedTomcat",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration$EmbeddedTomcat$$EnhancerBySpringCGLIB$$8f67c107",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "tomcatEmbeddedServletContainerFactory",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory",
        "resource": "class path resource [org/springframework/boot/autoconfigure/web/EmbeddedServletContainerAutoConfiguration$EmbeddedTomcat.class]",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration$$EnhancerBySpringCGLIB$$48514e2b",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "embeddedServletContainerCustomizerBeanPostProcessor",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizerBeanPostProcessor",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "errorPageRegistrarBeanPostProcessor",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.web.servlet.ErrorPageRegistrarBeanPostProcessor",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration$DispatcherServletConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration$DispatcherServletConfiguration$$EnhancerBySpringCGLIB$$824a2d3d",
        "resource": "null",
        "dependencies": ["spring.mvc-org.springframework.boot.autoconfigure.web.WebMvcProperties"]
    }, {
        "bean": "dispatcherServlet",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.web.servlet.DispatcherServlet",
        "resource": "class path resource [org/springframework/boot/autoconfigure/web/DispatcherServletAutoConfiguration$DispatcherServletConfiguration.class]",
        "dependencies": []
    }, {
        "bean": "spring.mvc-org.springframework.boot.autoconfigure.web.WebMvcProperties",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.web.WebMvcProperties",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration$DispatcherServletRegistrationConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration$DispatcherServletRegistrationConfiguration$$EnhancerBySpringCGLIB$$fd39bc64",
        "resource": "null",
        "dependencies": ["serverProperties", "spring.mvc-org.springframework.boot.autoconfigure.web.WebMvcProperties"]
    }, {
        "bean": "dispatcherServletRegistration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.web.servlet.ServletRegistrationBean",
        "resource": "class path resource [org/springframework/boot/autoconfigure/web/DispatcherServletAutoConfiguration$DispatcherServletRegistrationConfiguration.class]",
        "dependencies": ["dispatcherServlet"]
    }, {
        "bean": "org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration$$EnhancerBySpringCGLIB$$d158c03f",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration$$EnhancerBySpringCGLIB$$4ce40e75",
        "resource": "null",
        "dependencies": []
    }, {
        "bean": "methodValidationPostProcessor",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.validation.beanvalidation.MethodValidationPostProcessor",
        "resource": "class path resource [org/springframework/boot/autoconfigure/validation/ValidationAutoConfiguration.class]",
        "dependencies": ["environment"]
    },
    ......
     {
        "bean": "org.springframework.boot.autoconfigure.web.WebClientAutoConfiguration",
        "aliases": [],
        "scope": "singleton",
        "type": "org.springframework.boot.autoconfigure.web.WebClientAutoConfiguration$$EnhancerBySpringCGLIB$$ec83a29e",
        "resource": "null",
        "dependencies": []
    }]
}]

configprops

所有＠ConfigurationProperties注解的配置信息，如文件上传的最大允许配置等。访问http://localhost/monitor/configprops，输出如下：

{
    "environmentMvcEndpoint": {
        "prefix": "endpoints.env",
        "properties": {
            "path": "/env"
        }
    },
    "heapdumpMvcEndpoint": {
        "prefix": "endpoints.heapdump",
        "properties": {
            "enabled": true,
            "path": "/heapdump",
            "sensitive": true
        }
    },
    "managementServerProperties": {
        "prefix": "management",
        "properties": {
            "port": 80,
            "addApplicationContextHeader": true,
            "address": null,
            "contextPath": "/monitor",
            "ssl": null,
            "security": {
                "enabled": false,
                "roles": ["ACTUATOR"],
                "sessions": "STATELESS"
            }
        }
    },
    "spring.mvc-org.springframework.boot.autoconfigure.web.WebMvcProperties": {
        "prefix": "spring.mvc",
        "properties": {
            "locale": null,
            "mediaTypes": {},
            "localeResolver": "ACCEPT_HEADER",
            "messageCodesResolverFormat": null,
            "async": {
                "requestTimeout": null
            },
            "dispatchOptionsRequest": true,
            "servlet": {
                "loadOnStartup": -1
            },
            "ignoreDefaultModelOnRedirect": true,
            "dispatchTraceRequest": false,
            "staticPathPattern": "/**",
            "dateFormat": null,
            "view": {
                "prefix": null,
                "suffix": null
            },
            "logResolvedException": false,
            "throwExceptionIfNoHandlerFound": false
        }
    },
    "spring.http.multipart-org.springframework.boot.autoconfigure.web.MultipartProperties": {
        "prefix": "spring.http.multipart",
        "properties": {
            "enabled": true,
            "maxRequestSize": "10MB",
            "location": null,
            "resolveLazily": false,
            "fileSizeThreshold": "0",
            "maxFileSize": "1MB"
        }
    },
    "spring.http.encoding-org.springframework.boot.autoconfigure.web.HttpEncodingProperties": {
        "prefix": "spring.http.encoding",
        "properties": {
            "charset": "UTF-8",
            "mapping": null,
            "force": false,
            "forceResponse": false,
            "forceRequest": false
        }
    },
    "endpoints.health-org.springframework.boot.actuate.autoconfigure.HealthMvcEndpointProperties": {
        "prefix": "endpoints.health",
        "properties": {
            "mapping": {}
        }
    },
    "spring.resources-org.springframework.boot.autoconfigure.web.ResourceProperties": {
        "prefix": "spring.resources",
        "properties": {
            "staticLocations": ["/", "classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/"],
            "addMappings": true,
            "chain": {
                "cache": true,
                "htmlApplicationCache": false,
                "gzipped": false,
                "strategy": {
                    "fixed": {
                        "enabled": false,
                        "paths": ["/**"],
                        "version": null
                    },
                    "content": {
                        "enabled": false,
                        "paths": ["/**"]
                    }
                }
            },
            "cachePeriod": null
        }
    },
    "shutdownMvcEndpoint": {
        "prefix": "endpoints.shutdown",
        "properties": {
            "path": "/shutdown"
        }
    },
    "requestMappingEndpoint": {
        "prefix": "endpoints.mappings",
        "properties": {
            "id": "mappings",
            "enabled": true,
            "sensitive": true
        }
    },
    "autoConfigurationReportEndpoint": {
        "prefix": "endpoints.autoconfig",
        "properties": {
            "id": "autoconfig",
            "enabled": true,
            "sensitive": true
        }
    },
    "management.trace-org.springframework.boot.actuate.trace.TraceProperties": {
        "prefix": "management.trace",
        "properties": {
            "include": ["TIME_TAKEN", "ERRORS", "REQUEST_HEADERS", "COOKIES", "RESPONSE_HEADERS"]
        }
    },
    "management.info-org.springframework.boot.actuate.autoconfigure.InfoContributorProperties": {
        "prefix": "management.info",
        "properties": {
            "git": {
                "mode": "SIMPLE"
            }
        }
    },
    "loggersEndpoint": {
        "prefix": "endpoints.loggers",
        "properties": {
            "id": "loggers",
            "enabled": true,
            "sensitive": true
        }
    },
    "spring.jackson-org.springframework.boot.autoconfigure.jackson.JacksonProperties": {
        "prefix": "spring.jackson",
        "properties": {
            "deserialization": {},
            "defaultPropertyInclusion": null,
            "propertyNamingStrategy": null,
            "locale": null,
            "serialization": {},
            "jodaDateTimeFormat": null,
            "mapper": {},
            "generator": {},
            "timeZone": null,
            "dateFormat": null,
            "parser": {}
        }
    },
    "shutdownEndpoint": {
        "prefix": "endpoints.shutdown",
        "properties": {
            "id": "shutdown",
            "enabled": true,
            "sensitive": true
        }
    },
    "endpoints.metrics.filter-org.springframework.boot.actuate.autoconfigure.MetricFilterProperties": {
        "prefix": "endpoints.metrics.filter",
        "properties": {
            "counterSubmissions": ["MERGED"],
            "gaugeSubmissions": ["MERGED"]
        }
    },
    "loggersMvcEndpoint": {
        "prefix": "endpoints.loggers",
        "properties": {
            "path": "/loggers"
        }
    },
    "dumpEndpoint": {
        "prefix": "endpoints.dump",
        "properties": {
            "id": "dump",
            "enabled": true,
            "sensitive": true
        }
    },
    "endpoints-org.springframework.boot.actuate.endpoint.EndpointProperties": {
        "prefix": "endpoints",
        "properties": {
            "enabled": true,
            "sensitive": null
        }
    },
    "metricsMvcEndpoint": {
        "prefix": "endpoints.metrics",
        "properties": {
            "path": "/metrics"
        }
    },
    "metricsEndpoint": {
        "prefix": "endpoints.metrics",
        "properties": {
            "id": "metrics",
            "enabled": true,
            "sensitive": true
        }
    },
    "healthEndpoint": {
        "prefix": "endpoints.health",
        "properties": {
            "id": "health",
            "enabled": true,
            "timeToLive": 1000,
            "sensitive": false
        }
    },
    "auditEventMvcEndpoint": {
        "prefix": "endpoints.auditevents",
        "properties": {
            "enabled": true,
            "path": "/auditevents",
            "sensitive": true
        }
    },
    "healthMvcEndpoint": {
        "prefix": "endpoints.health",
        "properties": {
            "path": "/health"
        }
    },
    "endpoints.cors-org.springframework.boot.actuate.autoconfigure.EndpointCorsProperties": {
        "prefix": "endpoints.cors",
        "properties": {
            "maxAge": 1800,
            "exposedHeaders": [],
            "allowedHeaders": [],
            "allowedOrigins": [],
            "allowedMethods": [],
            "allowCredentials": null
        }
    },
    "diskSpaceHealthIndicatorProperties": {
        "prefix": "management.health.diskspace",
        "properties": {
            "path": "C:\\Users\\Administrator\\Desktop\\01.Start-Spring-Boot\\.",
            "threshold": 10485760
        }
    },
    "beansEndpoint": {
        "prefix": "endpoints.beans",
        "properties": {
            "id": "beans",
            "enabled": true,
            "sensitive": true
        }
    },
    "traceEndpoint": {
        "prefix": "endpoints.trace",
        "properties": {
            "id": "trace",
            "enabled": true,
            "sensitive": true
        }
    },
    "auditEventsEndpoint": {
        "prefix": "endpoints.auditevents",
        "properties": {
            "enabled": true
        }
    },
    "endpoints.jmx-org.springframework.boot.actuate.autoconfigure.EndpointMBeanExportProperties": {
        "prefix": "endpoints.jmx",
        "properties": {
            "enabled": true,
            "uniqueNames": false,
            "domain": "",
            "staticNames": {}
        }
    },
    "spring.metrics.export-org.springframework.boot.actuate.metrics.export.MetricExportProperties": {
        "prefix": "spring.metrics.export",
        "properties": {
            "enabled": true,
            "redis": {
                "prefix": "spring.metrics.application.7f8f2ef33a0f173c075f96c8f5c5b4fd",
                "key": "******"
            },
            "aggregate": {
                "prefix": "application.7f8f2ef33a0f173c075f96c8f5c5b4fd",
                "keyPattern": "k.d"
            },
            "excludes": null,
            "statsd": {
                "host": null,
                "port": 8125,
                "prefix": null
            },
            "triggers": {},
            "includes": null
        }
    },
    "configurationPropertiesReportEndpoint": {
        "prefix": "endpoints.configprops",
        "properties": {
            "id": "configprops",
            "enabled": true,
            "sensitive": true
        }
    },
    "spring.info-org.springframework.boot.autoconfigure.info.ProjectInfoProperties": {
        "prefix": "spring.info",
        "properties": {
            "git": {
                "location": {}
            },
            "build": {
                "location": {}
            }
        }
    },
    "infoEndpoint": {
        "prefix": "endpoints.info",
        "properties": {
            "id": "info",
            "enabled": true,
            "sensitive": false
        }
    },
    "serverProperties": {
        "prefix": "server",
        "properties": {
            "undertow": {
                "maxHttpPostSize": 0,
                "bufferSize": null,
                "buffersPerRegion": null,
                "ioThreads": null,
                "workerThreads": null,
                "directBuffers": null,
                "accesslog": {
                    "enabled": null,
                    "pattern": "common",
                    "prefix": "access_log.",
                    "suffix": "log",
                    "dir": "C:\\Users\\Administrator\\Desktop\\01.Start-Spring-Boot\\logs",
                    "rotate": true
                }
            },
            "port": 80,
            "error": {
                "path": "/error",
                "includeStacktrace": "NEVER"
            },
            "maxHttpHeaderSize": 0,
            "jspServlet": null,
            "ssl": null,
            "maxHttpPostSize": 0,
            "jetty": {
                "maxHttpPostSize": 0,
                "acceptors": null,
                "selectors": null
            },
            "servletPath": "/",
            "tomcat": {
                "accesslog": {
                    "enabled": false,
                    "pattern": "common",
                    "directory": "logs",
                    "prefix": "access_log",
                    "suffix": ".log",
                    "rotate": true,
                    "renameOnRotate": false,
                    "fileDateFormat": ".yyyy-MM-dd",
                    "requestAttributesEnabled": false,
                    "buffered": true
                },
                "internalProxies": "10\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|192\\.168\\.\\d{1,3}\\.\\d{1,3}|169\\.254\\.\\d{1,3}\\.\\d{1,3}|127\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|172\\.1[6-9]{1}\\.\\d{1,3}\\.\\d{1,3}|172\\.2[0-9]{1}\\.\\d{1,3}\\.\\d{1,3}|172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3}",
                "protocolHeader": null,
                "protocolHeaderHttpsValue": "https",
                "portHeader": "X-Forwarded-Port",
                "remoteIpHeader": null,
                "basedir": null,
                "backgroundProcessorDelay": 30,
                "maxThreads": 0,
                "minSpareThreads": 0,
                "maxHttpPostSize": 0,
                "redirectContextRoot": null,
                "uriEncoding": null,
                "maxConnections": 0,
                "acceptCount": 0,
                "additionalTldSkipPatterns": []
            },
            "connectionTimeout": null,
            "session": {
                "timeout": null,
                "trackingModes": null,
                "persistent": false,
                "storeDir": null,
                "cookie": {
                    "name": null,
                    "domain": null,
                    "path": null,
                    "comment": null,
                    "httpOnly": null,
                    "secure": null,
                    "maxAge": null
                }
            },
            "address": null,
            "contextParameters": {},
            "serverHeader": null,
            "useForwardHeaders": null,
            "contextPath": null,
            "displayName": "application"
        }
    },
    "management.health.status-org.springframework.boot.actuate.autoconfigure.HealthIndicatorProperties": {
        "prefix": "management.health.status",
        "properties": {
            "order": null
        }
    },
    "environmentEndpoint": {
        "prefix": "endpoints.env",
        "properties": {
            "id": "env",
            "enabled": true,
            "sensitive": true
        }
    }
}

trace

/trace接口能查看最近的HTTP 请求和响应，在浏览器输入：http://localhost/monitor/trace，输出如下：

[{
    "timestamp": 1525657638444,
    "info": {
        "method": "GET",
        "path": "/login;JSESSIONID=c1d0a83c-05fd-479c-ae6b-2ecc9b878a4a",
        "headers": {
            "request": {
                "host": "localhost",
                "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0",
                "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
                "accept-language": "zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2",
                "accept-encoding": "gzip, deflate",
                "connection": "keep-alive",
                "upgrade-insecure-requests": "1",
                "pragma": "no-cache",
                "cache-control": "no-cache"
            },
            "response": {
                "X-Application-Context": "application:80",
                "status": "404"
            }
        },
        "timeTaken": "11"
    }
}, {
    "timestamp": 1525657495017,
    "info": {
        "method": "GET",
        "path": "/monitor/beans",
        "headers": {
            "request": {
                "host": "localhost",
                "connection": "keep-alive",
                "upgrade-insecure-requests": "1",
                "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.10 Safari/537.36",
                "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
                "accept-encoding": "gzip, deflate, br",
                "accept-language": "zh-CN,zh;q=0.9,en;q=0.8"
            },
            "response": {
                "X-Application-Context": "application:80",
                "Content-Type": "application/vnd.spring-boot.actuator.v1+json;charset=UTF-8",
                "Transfer-Encoding": "chunked",
                "Date": "Mon, 07 May 2018 01:44:55 GMT",
                "status": "200"
            }
        },
        "timeTaken": "609"
    }
}, {
    "timestamp": 1525657402454,
    "info": {
        "method": "GET",
        "path": "/favicon.ico",
        "headers": {
            "request": {
                "host": "localhost",
                "connection": "keep-alive",
                "pragma": "no-cache",
                "cache-control": "no-cache",
                "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.10 Safari/537.36",
                "accept": "image/webp,image/apng,image/*,*/*;q=0.8",
                "referer": "http://localhost/monitor/autoconfig",
                "accept-encoding": "gzip, deflate, br",
                "accept-language": "zh-CN,zh;q=0.9,en;q=0.8"
            },
            "response": {
                "X-Application-Context": "application:80",
                "Last-Modified": "Wed, 29 Nov 2017 01:54:48 GMT",
                "Accept-Ranges": "bytes",
                "Content-Type": "application/octet-stream",
                "Content-Length": "946",
                "Date": "Mon, 07 May 2018 01:43:22 GMT",
                "status": "200"
            }
        },
        "timeTaken": "21"
    }
}, {
    "timestamp": 1525657402076,
    "info": {
        "method": "GET",
        "path": "/monitor/autoconfig",
        "headers": {
            "request": {
                "host": "localhost",
                "connection": "keep-alive",
                "cache-control": "max-age=0",
                "upgrade-insecure-requests": "1",
                "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.10 Safari/537.36",
                "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
                "accept-encoding": "gzip, deflate, br",
                "accept-language": "zh-CN,zh;q=0.9,en;q=0.8"
            },
            "response": {
                "X-Application-Context": "application:80",
                "Content-Type": "application/vnd.spring-boot.actuator.v1+json;charset=UTF-8",
                "Transfer-Encoding": "chunked",
                "Date": "Mon, 07 May 2018 01:43:22 GMT",
                "status": "200"
            }
        },
        "timeTaken": "300"
    }
}]

dump

获取某一时刻虚拟机线程栈信息。线程栈表示某一时刻虚拟机正在做的事情，访问http://localhost/monitor/dump，输出如下（截取部分）：

[{
    "threadName": "DestroyJavaVM",
    "threadId": 32,
    "blockedTime": -1,
    "blockedCount": 0,
    "waitedTime": -1,
    "waitedCount": 0,
    "lockName": null,
    "lockOwnerId": -1,
    "lockOwnerName": null,
    "inNative": false,
    "suspended": false,
    "threadState": "RUNNABLE",
    "stackTrace": [],
    "lockedMonitors": [],
    "lockedSynchronizers": [],
    "lockInfo": null
}, {
    "threadName": "http-nio-80-AsyncTimeout",
    "threadId": 30,
    "blockedTime": -1,
    "blockedCount": 0,
    "waitedTime": -1,
    "waitedCount": 14903,
    "lockName": null,
    "lockOwnerId": -1,
    "lockOwnerName": null,
    "inNative": false,
    "suspended": false,
    "threadState": "TIMED_WAITING",
    "stackTrace": [{
        "methodName": "sleep",
        "fileName": "Thread.java",
        "lineNumber": -2,
        "className": "java.lang.Thread",
        "nativeMethod": true
    }, {
        "methodName": "run",
        "fileName": "AbstractProtocol.java",
        "lineNumber": 1211,
        "className": "org.apache.coyote.AbstractProtocol$AsyncTimeout",
        "nativeMethod": false
    }, {
        "methodName": "run",
        "fileName": "Thread.java",
        "lineNumber": 745,
        "className": "java.lang.Thread",
        "nativeMethod": false
    }],
    "lockedMonitors": [],
    "lockedSynchronizers": [],
    "lockInfo": null
}, {
    "threadName": "http-nio-80-Acceptor-0",
    "threadId": 29,
    "blockedTime": -1,
    "blockedCount": 0,
    "waitedTime": -1,
    "waitedCount": 0,
    "lockName": null,
    "lockOwnerId": -1,
    "lockOwnerName": null,
    "inNative": true,
    "suspended": false,
    "threadState": "RUNNABLE",
    "stackTrace": [{
        "methodName": "accept0",
        "fileName": "ServerSocketChannelImpl.java",
        "lineNumber": -2,
        "className": "sun.nio.ch.ServerSocketChannelImpl",
        "nativeMethod": true
    }, {
        "methodName": "accept",
        "fileName": "ServerSocketChannelImpl.java",
        "lineNumber": 250,
        "className": "sun.nio.ch.ServerSocketChannelImpl",
        "nativeMethod": false
    }, {
        "methodName": "run",
        "fileName": "NioEndpoint.java",
        "lineNumber": 455,
        "className": "org.apache.tomcat.util.net.NioEndpoint$Acceptor",
        "nativeMethod": false
    }, {
        "methodName": "run",
        "fileName": "Thread.java",
        "lineNumber": 745,
        "className": "java.lang.Thread",
        "nativeMethod": false
    }],
    "lockedMonitors": [{
        "className": "java.lang.Object",
        "identityHashCode": 1985974129,
        "lockedStackDepth": 1,
        "lockedStackFrame": {
            "methodName": "accept",
            "fileName": "ServerSocketChannelImpl.java",
            "lineNumber": 250,
            "className": "sun.nio.ch.ServerSocketChannelImpl",
            "nativeMethod": false
        }
    }],
    "lockedSynchronizers": [],
    "lockInfo": null
}, {
    "threadName": "http-nio-80-ClientPoller-1",
    "threadId": 28,
    "blockedTime": -1,
    "blockedCount": 6,
    "waitedTime": -1,
    "waitedCount": 0,
    "lockName": null,
    "lockOwnerId": -1,
    "lockOwnerName": null,
    "inNative": true,
    "suspended": false,
    "threadState": "RUNNABLE",
    "stackTrace": [{
        "methodName": "poll0",
        "fileName": "WindowsSelectorImpl.java",
        "lineNumber": -2,
        "className": "sun.nio.ch.WindowsSelectorImpl$SubSelector",
        "nativeMethod": true
    }, {
        "methodName": "poll",
        "fileName": "WindowsSelectorImpl.java",
        "lineNumber": 296,
        "className": "sun.nio.ch.WindowsSelectorImpl$SubSelector",
        "nativeMethod": false
    }, {
        "methodName": "access$400",
        "fileName": "WindowsSelectorImpl.java",
        "lineNumber": 278,
        "className": "sun.nio.ch.WindowsSelectorImpl$SubSelector",
        "nativeMethod": false
    }, {
        "methodName": "doSelect",
        "fileName": "WindowsSelectorImpl.java",
        "lineNumber": 159,
        "className": "sun.nio.ch.WindowsSelectorImpl",
        "nativeMethod": false
    }, {
        "methodName": "lockAndDoSelect",
        "fileName": "SelectorImpl.java",
        "lineNumber": 87,
        "className": "sun.nio.ch.SelectorImpl",
        "nativeMethod": false
    }, {
        "methodName": "select",
        "fileName": "SelectorImpl.java",
        "lineNumber": 98,
        "className": "sun.nio.ch.SelectorImpl",
        "nativeMethod": false
    }, {
        "methodName": "run",
        "fileName": "NioEndpoint.java",
        "lineNumber": 793,
        "className": "org.apache.tomcat.util.net.NioEndpoint$Poller",
        "nativeMethod": false
    }, {
        "methodName": "run",
        "fileName": "Thread.java",
        "lineNumber": 745,
        "className": "java.lang.Thread",
        "nativeMethod": false
    }],
    "lockedMonitors": [{
        "className": "sun.nio.ch.Util$2",
        "identityHashCode": 511554453,
        "lockedStackDepth": 4,
        "lockedStackFrame": {
            "methodName": "lockAndDoSelect",
            "fileName": "SelectorImpl.java",
            "lineNumber": 87,
            "className": "sun.nio.ch.SelectorImpl",
            "nativeMethod": false
        }
    }, {
        "className": "java.util.Collections$UnmodifiableSet",
        "identityHashCode": 563515370,
        "lockedStackDepth": 4,
        "lockedStackFrame": {
            "methodName": "lockAndDoSelect",
            "fileName": "SelectorImpl.java",
            "lineNumber": 87,
            "className": "sun.nio.ch.SelectorImpl",
            "nativeMethod": false
        }
    }, {
        "className": "sun.nio.ch.WindowsSelectorImpl",
        "identityHashCode": 761235575,
        "lockedStackDepth": 4,
        "lockedStackFrame": {
            "methodName": "lockAndDoSelect",
            "fileName": "SelectorImpl.java",
            "lineNumber": 87,
            "className": "sun.nio.ch.SelectorImpl",
            "nativeMethod": false
        }
    }],
    "lockedSynchronizers": [],
    "lockInfo": null
},
......
 {
    "threadName": "Finalizer",
    "threadId": 3,
    "blockedTime": -1,
    "blockedCount": 202,
    "waitedTime": -1,
    "waitedCount": 51,
    "lockName": "java.lang.ref.ReferenceQueue$Lock@bd5f3f3",
    "lockOwnerId": -1,
    "lockOwnerName": null,
    "inNative": false,
    "suspended": false,
    "threadState": "WAITING",
    "stackTrace": [{
        "methodName": "wait",
        "fileName": "Object.java",
        "lineNumber": -2,
        "className": "java.lang.Object",
        "nativeMethod": true
    }, {
        "methodName": "remove",
        "fileName": "ReferenceQueue.java",
        "lineNumber": 135,
        "className": "java.lang.ref.ReferenceQueue",
        "nativeMethod": false
    }, {
        "methodName": "remove",
        "fileName": "ReferenceQueue.java",
        "lineNumber": 151,
        "className": "java.lang.ref.ReferenceQueue",
        "nativeMethod": false
    }, {
        "methodName": "run",
        "fileName": "Finalizer.java",
        "lineNumber": 209,
        "className": "java.lang.ref.Finalizer$FinalizerThread",
        "nativeMethod": false
    }],
    "lockedMonitors": [],
    "lockedSynchronizers": [],
    "lockInfo": {
        "className": "java.lang.ref.ReferenceQueue$Lock",
        "identityHashCode": 198570995
    }
}]