動(dòng)態(tài)設(shè)置 log4j2 日志的級(jí)別不能落

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.olive</groupId>
    <artifactId>valid-log4j2</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.8.RELEASE</version>
        <relativePath /> 
    </parent>
    <name>valid-demo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>  
            <groupId>org.springframework.boot</groupId>  
            <artifactId>spring-boot-starter-web</artifactId>  
            <exclusions><!-- 去掉springboot默認(rèn)配置 -->  
                <exclusion>  
                    <groupId>org.springframework.boot</groupId>  
                    <artifactId>spring-boot-starter-logging</artifactId>  
                </exclusion>  
            </exclusions>  
        </dependency> 

        <dependency> <!-- 引入log4j2依賴(lài) -->  
            <groupId>org.springframework.boot</groupId>  
            <artifactId>spring-boot-starter-log4j2</artifactId>  
        </dependency> 
    </dependencies>
</project>

package com.olive.controller;

import java.util.HashMap;
import java.util.Map;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.config.LoggerConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.impl.StaticLoggerBinder;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class LoggerController {

    private final static  Logger logger = LoggerFactory.getLogger(LoggerController.class);

    // TODO 
}

@RequestMapping("/logger/print")
public Map loggerPrint(){
    Map result = new HashMap();
    result.put("code", 200);
    result.put("msg", "success");

    logger.debug("loggerPrint debug>>>>");
    logger.info("loggerPrint info>>>>");
    logger.warn("loggerPrint warn>>>>");
    logger.error("loggerPrint error>>>>");

    return result;
}

@RequestMapping("/logger/printAllLogger")
public Map printAllLogger(){
    Map result = new HashMap();
    result.put("code", 200);
    result.put("msg", "success");

    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);

    Configuration config = ctx.getConfiguration();
    Map<String, LoggerConfig> loggerConfigs = config.getLoggers();
    System.out.println("printAllLogger begin>>>>>>>>");
    loggerConfigs.forEach((name, loggerConfig) -> {
        System.out.println("name = " + name);
       System.out.println("loggerConfig = " + loggerConfig);
    });
    System.out.println("printAllLogger end>>>>>>>>");
    return result;
}

@RequestMapping("/logger/level")
public Map loggerLevelChange(String level){
    Map result = new HashMap();
    result.put("code", 200);
    result.put("msg", "success");

    String loggerFactoryClassStr = StaticLoggerBinder.getSingleton().getLoggerFactoryClassStr();
    System.out.println("loggerFactoryClassStr>>>>" + loggerFactoryClassStr);    
    LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
    Configuration config = ctx.getConfiguration();
    LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);

    switch (level) {
    case "debug":
        loggerConfig.setLevel(Level.DEBUG);
        break;
    case "info":
        loggerConfig.setLevel(Level.INFO);
        break;
    case "warn":
        loggerConfig.setLevel(Level.WARN);
        break;
    case "error":
        loggerConfig.setLevel(Level.ERROR);
        break;
    default:
        break;
    }
    ctx.updateLoggers();
    return result;
}

<?xml version="1.0" encoding="UTF-8"?>
<!--Configuration后面的status，這個(gè)用于設(shè)置log4j2自身內(nèi)部的信息輸出，可以不設(shè)置，當(dāng)設(shè)置成trace時(shí)，你會(huì)看到log4j2內(nèi)部各種詳細(xì)輸出-->
<!--monitorInterval：Log4j能夠自動(dòng)檢測(cè)修改配置 文件和重新配置本身，設(shè)置間隔秒數(shù)-->
<configuration monitorInterval="5">
  <!--日志級(jí)別以及優(yōu)先級(jí)排序: OFF > FATAL > ERROR > WARN > INFO > DEBUG > TRACE > ALL -->

  <!--變量配置-->
  <Properties>
    <!-- 格式化輸出：%date表示日期，%thread表示線程名，%-5level：級(jí)別從左顯示5個(gè)字符寬度 %msg：日志消息，%n是換行符-->
    <!-- %logger{36} 表示 Logger 名字最長(zhǎng)36個(gè)字符 -->
    <property name="LOG_PATTERN" value="%date{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n" />
  </Properties>

  <appenders>
    <console name="ConsoleOut" target="SYSTEM_OUT">
      <!--輸出日志的格式-->
      <PatternLayout pattern="${LOG_PATTERN}"/>
      <!--控制臺(tái)只輸出level及其以上級(jí)別的信息（onMatch），其他的直接拒絕（onMismatch）-->
   <!--    <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/> -->
    </console>
  </appenders>

  <loggers>
    <root level="debug">
      <appender-ref ref="ConsoleOut"/>
    </root>
  </loggers>

</configuration>

@SpringBootApplication
public class Application 
{
    public static void main( String[] args )
    {
        SpringApplication.run(Application.class, args);
    }
}

21:08:52.298 [http-nio-8080-exec-1] DEBUG com.olive.controller.LoggerController - loggerPrint debug>>>>
21:08:52.298 [http-nio-8080-exec-1] INFO  com.olive.controller.LoggerController - loggerPrint info>>>>
21:08:52.298 [http-nio-8080-exec-1] WARN  com.olive.controller.LoggerController - loggerPrint warn>>>>
21:08:52.298 [http-nio-8080-exec-1] ERROR com.olive.controller.LoggerController - loggerPrint error>>>>

printAllLogger begin>>>>>>>>
name = 
loggerConfig = root
printAllLogger end>>>>>>>>

21:19:25.756 [http-nio-8080-exec-6] INFO  com.olive.controller.LoggerController - loggerPrint info>>>>
21:19:25.756 [http-nio-8080-exec-6] WARN  com.olive.controller.LoggerController - loggerPrint warn>>>>
21:19:25.756 [http-nio-8080-exec-6] ERROR com.olive.controller.LoggerController - loggerPrint error>>>>

  <loggers>
    <root level="debug">
      <appender-ref ref="Console"/>
    </root>

     <logger name="org.springframework" level="info" additivity="true">
     </logger>

     <logger name="org.hibernate" level="warn" additivity="true">
     </logger>
  </loggers>

printAllLogger begin>>>>>>>>
name = 
loggerConfig = root
name = org.springframework
loggerConfig = org.springframework
name = org.hibernate
loggerConfig = org.hibernate
printAllLogger end>>>>>>>>