java.vm.info_SpringBoot四大神器之Actuator的使用小结

序

Spring Boot有四大神器，分别是auto-configuration、starters、cli、actuator，本文主要讲actuator。actuator是spring boot提供的对应用系统的自省和监控的集成功能，可以对应用系统进行配置查看、相关功能统计等。

spring-boot-starter-actuator模块的实现对于实施微服务的中小团队来说，可以有效地减少监控系统在采集应用指标时的开发量。当然，它也并不是万能的，有时候我们也需要对其做一些简单的扩展来帮助我们实现自身系统个性化的监控需求。下面，在本文中，我们将详解的介绍一些关于spring-boot-starter-actuator模块的内容，包括它的原生提供的端点以及一些常用的扩展和配置方式。

使用actuator

添加依赖

org.springframework.boot

spring-boot-starter-actuator

主要暴露的功能

HTTP方法

路径

描述

鉴权

GET

/autoconfig

查看自动配置的使用情况

true

GET

/configprops

查看配置属性，包括默认配置

true

GET

/beans

查看bean及其关系列表

true

GET

/dump

打印线程栈

true

GET

/env

查看所有环境变量

true

GET

/env/{name}

查看具体变量值

true

GET

/health

查看应用健康指标

false

GET

/info

查看应用信息

false

GET

/mappings

查看所有url映射

true

GET

/metrics

查看应用基本指标

true

GET

/metrics/{name}

查看具体指标

true

POST

/shutdown

关闭应用

true

GET

/trace

查看基本追踪信息

true

/autoconfig

{

"positiveMatches": {

"AuditAutoConfiguration.AuditEventRepositoryConfiguration": [

{

"condition": "OnBeanCondition",

"message": "@ConditionalOnMissingBean (types: org.springframework.boot.actuate.audit.AuditEventRepository; SearchStrategy: all) found no beans"

}

]

"negativeMatches": {

"CacheStatisticsAutoConfiguration": [

{

"condition": "OnBeanCondition",

"message": "@ConditionalOnBean (types: org.springframework.cache.CacheManager; SearchStrategy: all) found no beans"

}

]

}

/configprops

{

"management.health.status.CONFIGURATION_PROPERTIES": {

"prefix": "management.health.status",

"properties": {

"order": null

}

"multipart.CONFIGURATION_PROPERTIES": {

"prefix": "multipart",

"properties": {

"enabled": false,

"maxRequestSize": "10Mb",

"location": null,

"fileSizeThreshold": "0",

"maxFileSize": "1Mb"

}

"environmentEndpoint": {

"prefix": "endpoints.env",

"properties": {

"id": "env",

"enabled": true,

"sensitive": true

}

/beans

[

{

"context": "application:8080",

"parent": null,

"beans": [

{

"bean": "appMain",

"scope": "singleton",

"type": "com.xixicat.AppMain$$EnhancerBySpringCGLIB$$29382b14",

"resource": "null",

"dependencies": [ ]

{

"bean": "videoInfoMapper",

"scope": "singleton",

"type": "com.xixicat.dao.VideoInfoMapper",

"resource": "file [/Users/xixicat/workspace/video-uber/target/classes/com/xixicat/dao/VideoInfoMapper.class]",

"dependencies": [

"sqlSessionFactory"

]

}

]

}

]

/dump

[

{

"threadName": "Signal Dispatcher",

"threadId": 4,

"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": "Reference Handler",

"threadId": 2,

"blockedTime": -1,

"blockedCount": 217,

"waitedTime": -1,

"waitedCount": 9,

"lockName": "java.lang.ref.Reference$Lock@45de945",

"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": "wait",

"fileName": "Object.java",

"lineNumber": 503,

"className": "java.lang.Object",

"nativeMethod": false

{

"methodName": "run",

"fileName": "Reference.java",

"lineNumber": 133,

"className": "java.lang.ref.Reference$ReferenceHandler",

"nativeMethod": false

}

"lockedMonitors": [ ],

"lockedSynchronizers": [ ],

"lockInfo": {

"className": "java.lang.ref.Reference$Lock",

"identityHashCode": 73263429

}

]

/env

{

profiles: [],

server.ports: {

local.server.port: 8080

servletContextInitParams: {},

systemProperties: {

java.runtime.name: "Java(TM) SE Runtime Environment",

sun.boot.library.path: "/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib",

java.vm.version: "24.79-b02",

gopherProxySet: "false",

maven.multiModuleProjectDirectory: "/Users/xixicat/workspace/video-uber",

java.vm.vendor: "Oracle Corporation",

java.vendor.url: "http://java.oracle.com/",

guice.disable.misplaced.annotation.check: "true",

path.separator: ":",

java.vm.name: "Java HotSpot(TM) 64-Bit Server VM",

file.encoding.pkg: "sun.io",

user.country: "CN",

sun.java.launcher: "SUN_STANDARD",

sun.os.patch.level: "unknown",

PID: "763",

java.vm.specification.name: "Java Virtual Machine Specification",

user.dir: "/Users/xixicat/workspace/video-uber",

java.runtime.version: "1.7.0_79-b15",

java.awt.graphicsenv: "sun.awt.CGraphicsEnvironment",

java.endorsed.dirs: "/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/endorsed",

os.arch: "x86_64",

java.io.tmpdir: "/var/folders/tl/xkf4nr61033gd6lk5d3llz080000gn/T/",

line.separator: " ",

java.vm.specification.vendor: "Oracle Corporation",

os.name: "Mac OS X",

classworlds.conf: "/Users/xixicat/devtool/maven-3.3.3/bin/m2.conf",

sun.jnu.encoding: "UTF-8",

spring.beaninfo.ignore: "true",

java.library.path: "/Users/xixicat/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.",

java.specification.name: "Java Platform API Specification",

java.class.version: "51.0",

sun.management.compiler: "HotSpot 64-Bit Tiered Compilers",

os.version: "10.10.5",

user.home: "/Users/xixicat",

user.timezone: "Asia/Shanghai",

java.awt.printerjob: "sun.lwawt.macosx.CPrinterJob",

file.encoding: "UTF-8",

java.specification.version: "1.7",

java.class.path: "/Users/xixicat/devtool/maven-3.3.3/boot/plexus-classworlds-2.5.2.jar",

user.name: "xixicat",

java.vm.specification.version: "1.7",

sun.java.command: "org.codehaus.plexus.classworlds.launcher.Launcher spring-boot:run",

java.home: "/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre",

sun.arch.data.model: "64",

user.language: "zh",

java.specification.vendor: "Oracle Corporation",

awt.toolkit: "sun.lwawt.macosx.LWCToolkit",

java.vm.info: "mixed mode",

java.version: "1.7.0_79",

java.ext.dirs: "/Users/xixicat/Library/Java/Extensions:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/ext:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java",

sun.boot.class.path: "/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/classes",

java.awt.headless: "true",

java.vendor: "Oracle Corporation",

maven.home: "/Users/xixicat/devtool/maven-3.3.3",

file.separator: "/",

LOG_EXCEPTION_CONVERSION_WORD: "%wEx",

java.vendor.url.bug: "http://bugreport.sun.com/bugreport/",

sun.io.unicode.encoding: "UnicodeBig",

sun.cpu.endian: "little",

sun.cpu.isalist: ""

systemEnvironment: {

TERM: "xterm-256color",

ZSH: "/Users/xixicat/.oh-my-zsh",

GVM_BROKER_SERVICE: "http://release.gvm.io",

GRIFFON_HOME: "/Users/xixicat/.gvm/griffon/current",

JAVA_MAIN_CLASS_763: "org.codehaus.plexus.classworlds.launcher.Launcher",

JAVA_HOME: "/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home",

SHLVL: "1",

MAVEN_CMD_LINE_ARGS: " spring-boot:run",

__CF_USER_TEXT_ENCODING: "0x1F5:0x19:0x34",

GROOVY_HOME: "/Users/xixicat/.gvm/groovy/current",

XPC_FLAGS: "0x0",

GVM_INIT: "true",

JBAKE_HOME: "/Users/xixicat/.gvm/jbake/current",

PWD: "/Users/xixicat/workspace/video-uber",

GVM_DIR: "/Users/xixicat/.gvm",

GVM_VERSION: "2.4.3",

MAVEN_PROJECTBASEDIR: "/Users/xixicat/workspace/video-uber",

LOGNAME: "xixicat",

SSH_AUTH_SOCK: "/private/tmp/com.apple.launchd.93xr1duECQ/Listeners",

SPRINGBOOT_HOME: "/Users/xixicat/.gvm/springboot/current",

GAIDEN_HOME: "/Users/xixicat/.gvm/gaiden/current",

LAZYBONES_HOME: "/Users/xixicat/.gvm/lazybones/current",

OLDPWD: "/Users/xixicat/workspace/video-uber",

SHELL: "/bin/zsh",

JBOSSFORGE_HOME: "/Users/xixicat/.gvm/jbossforge/current",

LC_CTYPE: "zh_CN.UTF-8",

TMPDIR: "/var/folders/tl/xkf4nr61033gd6lk5d3llz080000gn/T/",

GVM_SERVICE: "http://api.gvmtool.net",

GVM_PLATFORM: "Darwin",

CLASSPATH: ".:/Users/xixicat/.m2/repository/co/paralleluniverse/quasar-core/0.7.2/quasar-core-0.7.2.jar",

GLIDE_HOME: "/Users/xixicat/.gvm/glide/current",

PATH: "/Users/xixicat/.gvm/vertx/current/bin:/Users/xixicat/.gvm/springboot/current/bin:/Users/xixicat/.gvm/lazybones/current/bin:/Users/xixicat/.gvm/jbossforge/current/bin:/Users/xixicat/.gvm/jbake/current/bin:/Users/xixicat/.gvm/groovyserv/current/bin:/Users/xixicat/.gvm/groovy/current/bin:/Users/xixicat/.gvm/griffon/current/bin:/Users/xixicat/.gvm/grails/current/bin:/Users/xixicat/.gvm/gradle/current/bin:/Users/xixicat/.gvm/glide/current/bin:/Users/xixicat/.gvm/gaiden/current/bin:/Users/xixicat/.gvm/crash/current/bin:/Users/xixicat/.gvm/asciidoctorj/current/bin:/Users/xixicat/bin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/git/bin:/Users/xixicat/devtool/maven-3.3.3/bin:/Users/xixicat/devtool/gradle-2.6/bin:/Users/xixicat/devtool/android-sdk/platform-tools",

GRADLE_HOME: "/Users/xixicat/.gvm/gradle/current",

GROOVYSERV_HOME: "/Users/xixicat/.gvm/groovyserv/current",

GRAILS_HOME: "/Users/xixicat/.gvm/grails/current",

USER: "xixicat",

LESS: "-R",

PAGER: "less",

HOME: "/Users/xixicat",

CRASH_HOME: "/Users/xixicat/.gvm/crash/current",

XPC_SERVICE_NAME: "0",

VERTX_HOME: "/Users/xixicat/.gvm/vertx/current",

GVM_BROADCAST_SERVICE: "http://cast.gvm.io",

Apple_PubSub_Socket_Render: "/private/tmp/com.apple.launchd.y6fNwP8Sk6/Render",

LSCOLORS: "Gxfxcxdxbxegedabagacad",

ASCIIDOCTORJ_HOME: "/Users/xixicat/.gvm/asciidoctorj/current"

applicationConfig: [classpath: /application.properties]: {

pool.acquireIncrement: "1",

pool.minPoolSize: "5",

pool.initialPoolSize: "1",

database.username: "root",

pool.maxIdleTime: "60",

database.url: "jdbc:mysql://127.0.0.1:3307/video_uber?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull",

spring.jackson.dateFormat: "yyyy-MM-dd'T'HH:mm:ss",

database.slave.username: "root",

spring.jackson.serialization.write - dates - as - timestamps: "false",

pool.idleTimeout: "30000",

database.slave.url: "jdbc:mysql://127.0.0.1:3307/demo?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull",

server.port: "8080",

database.slave.password: "******",

database.password: "******",

database.driverClassName: "com.mysql.jdbc.Driver",

pool.maxPoolSize: "50",

database.dataSourceClassName: "com.mysql.jdbc.jdbc2.optional.MysqlDataSource"

}

/health

{

status: "UP",

diskSpace: {

status: "UP",

total: 249779191808,

free: 193741590528,

threshold: 10485760

db: {

status: "UP",

database: "MySQL",

hello: 1

}

/info

需要自己在application.properties里头添加信息，比如

info:

contact:

email: xixicat@gmail.com

phone: 0755-82890987

然后请求就可以出来了

{

"contact": {

"phone": "0755-82890987",

"email": "xixicat@gmail.com"

}

/mappings

{

[/metrics || /metrics.json], methods = [GET], produces = [application / json]

}: {