springboot動態調整日誌級別

前言：咱們在調試程序時，查看日誌是主要途徑之一。當項目部署到開發測試環境以後，就沒法爲所欲爲經過修改配置文件來修改日誌級別，此時就須要動態的調整日誌級別來知足調試需求。web

#### 1.引入actuator依賴spring

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

2.修改application.properties

#暴露loggers這個endpoint
management.endpoints.web.exposure.include=health,info,loggers

3.查看日誌信息

訪問http://ip:port/actuator/loggers 能夠看到當前項目每一個包的日誌級別,能夠看到springboot的默認日誌級別爲info，也就是ROOT對應的日誌級別

{
  "levels": [
    "OFF",
    "ERROR",
    "WARN",
    "INFO",
    "DEBUG",
    "TRACE"
  ],
  "loggers": {
    "ROOT": {
      "configuredLevel": "INFO",
      "effectiveLevel": "INFO"
    },
    "com": {
      "configuredLevel": null,
      "effectiveLevel": "INFO"
    },
    "com.yao": {
      "configuredLevel": null,
      "effectiveLevel": "INFO"
    },
    "com.yao.logdemo": {
      "configuredLevel": null,
      "effectiveLevel": "INFO"
    },
    ...
    }

4.修改日誌級別

修改整個項目日誌級別爲error

發送post請求到 http://ip:port/actuator/loggers/ROOT ，請求body爲json

{
    "configuredLevel":"ERROR"
}

再次查看日誌信息，能夠看到全部ROOT以及全部包的日誌級別都變成ERROR了springboot

{
  "levels": [
    "OFF",
    "ERROR",
    "WARN",
    "INFO",
    "DEBUG",
    "TRACE"
  ],
  "loggers": {
    "ROOT": {
      "configuredLevel": "ERROR",
      "effectiveLevel": "ERROR"
    },
    "com": {
      "configuredLevel": null,
      "effectiveLevel": "ERROR"
    },
    "com.yao": {
      "configuredLevel": null,
      "effectiveLevel": "ERROR"
    },
    "com.yao.logdemo": {
      "configuredLevel": null,
      "effectiveLevel": "ERROR"
    },
    ...
    }

修改com.yao包日誌級別爲debug

發送post請求到 http://ip:port/actuator/loggers/com.yao ，請求body爲app

{
 "configuredLevel":"DEBUG"
}

再次查看日誌信息，能夠看到com.yao包及包含的包日誌級別都變爲DEBUG了spring-boot

{
  "levels": [
    "OFF",
    "ERROR",
    "WARN",
    "INFO",
    "DEBUG",
    "TRACE"
  ],
  "loggers": {
    "ROOT": {
      "configuredLevel": "ERROR",
      "effectiveLevel": "ERROR"
    },
    "com": {
      "configuredLevel": null,
      "effectiveLevel": "ERROR"
    },
    "com.yao": {
      "configuredLevel": "DEBUG",
      "effectiveLevel": "DEBUG"
    },
    "com.yao.logdemo": {
      "configuredLevel": null,
      "effectiveLevel": "DEBUG"
    },
    ...
    }