dependencies {
  // log4j2
  compile "org.apache.logging.log4j:log4j-api:2.8"
  compile "org.apache.logging.log4j:log4j-core:2.8"
  // 用來(lái)支持Logger中的Async
  compile 'com.lmax:disruptor:3.3.6'
}

<dependencies>
 <dependency>
  <groupId>org.apache.logging.log4j</groupId>
  <artifactId>log4j-api</artifactId>
  <version>2.8</version>
 </dependency>

 <dependency>
  <groupId>org.apache.logging.log4j</groupId>
  <artifactId>log4j-core</artifactId>
  <version>2.8</version>
 </dependency>

 <dependency>
  <groupId>com.lmax</groupId>
  <artifactId>disruptor</artifactId>
  <version>3.3.6</version>
 </dependency>
</dependencies>

<&#63;xml version="1.0" encoding="UTF-8"&#63;>
<!-- 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?？梢栽O(shè)置成OFF(關(guān)閉)或Error(只輸出錯(cuò)誤信息)
-->
<Configurationstatus="OFF">
  <!-- 日志文件目錄和壓縮文件目錄配置 -->
  <Properties>
    <Propertyname="fileName">/home/kylin/log/knight/spring_log</Property>
    <Propertyname="fileGz">/home/kylin/log/knight/spring_log/7z</Property>
  </Properties>

  <Appenders>
    <!-- 輸出控制臺(tái)日志的配置 -->
    <Consolename="console"target="SYSTEM_OUT">
      <!--控制臺(tái)只輸出level及以上級(jí)別的信息（onMatch），其他的直接拒絕（onMismatch）-->
      <ThresholdFilterlevel="info"onMatch="ACCEPT"onMismatch="DENY"/>
      <!-- 輸出日志的格式 -->
      <PatternLayoutpattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
    </Console>

    <!-- 打印出所有的信息，每次大小超過(guò)size，則這size大小的日志會(huì)自動(dòng)存入按年份-月份建立的文件夾下面并進(jìn)行壓縮，作為存檔 -->
    <RollingRandomAccessFilename="infoFile"fileName="${fileName}/web-info.log"immediateFlush="false"
                 filePattern="${fileGz}/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.web-info.gz">
      <PatternLayoutpattern="%d{yyyy-MM-dd 'at' HH:mm:ss z} [%t] %-5level %logger{36} %L %M - %msg%xEx%n"/>
      <Policies>
        <TimeBasedTriggeringPolicyinterval="6"modulate="true"/>
        <SizeBasedTriggeringPolicysize="50 MB"/>
      </Policies>
      <Filters>
        <!-- 只記錄info和warn級(jí)別信息 -->
        <ThresholdFilterlevel="error"onMatch="DENY"onMismatch="NEUTRAL"/>
        <ThresholdFilterlevel="info"onMatch="ACCEPT"onMismatch="DENY"/>
      </Filters>
      <!-- 指定每天的最大壓縮包個(gè)數(shù)，默認(rèn)7個(gè)，超過(guò)了會(huì)覆蓋之前的 -->
      <DefaultRolloverStrategymax="50"/>
    </RollingRandomAccessFile>

    <!-- 存儲(chǔ)所有error信息 -->
    <RollingRandomAccessFilename="errorFile"fileName="${fileName}/web-error.log"immediateFlush="false"
                 filePattern="${fileGz}/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.web-error.gz">
      <PatternLayoutpattern="%d{yyyy-MM-dd 'at' HH:mm:ss z} [%t] %-5level %logger{36} %L %M - %msg%xEx%n"/>
      <Policies>
        <TimeBasedTriggeringPolicyinterval="6"modulate="true"/>
        <SizeBasedTriggeringPolicysize="50 MB"/>
      </Policies>
      <Filters>
        <!-- 只記錄error級(jí)別信息 -->
        <ThresholdFilterlevel="error"onMatch="ACCEPT"onMismatch="DENY"/>
      </Filters>
      <!-- 指定每天的最大壓縮包個(gè)數(shù)，默認(rèn)7個(gè)，超過(guò)了會(huì)覆蓋之前的 -->
      <DefaultRolloverStrategymax="50"/>
    </RollingRandomAccessFile>
  </Appenders>

  <!-- 全局配置，默認(rèn)所有的Logger都繼承此配置 -->
  <Loggers>
    <!-- AsyncRoot - 異步記錄日志 - 需要LMAX Disruptor的支持 -->
    <AsyncRootlevel="info"additivity="false">
      <AppenderRefref="console"/>
      <AppenderRefref="infoFile"/>
      <AppenderRefref="errorFile"/>
    </AsyncRoot>
  </Loggers>
</Configuration>

package com.spring.log4j2.utils;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * Logger 日志記錄輔助類
 * 
 * Created by Kylin on 2017/5/11.
 */
public classL{

  private static final Logger LOGGER = LogManager.getLogger();

  privateL(){
    /* cannot be instantiated */
    throw new UnsupportedOperationException("cannot be instantiated");
  }

  publicstaticLoggergetLogger(){
    return LOGGER;
  }

  publicstaticvoidt(String msg){
    LOGGER.trace(msg);
  }

  publicstaticvoidd(String msg){
    LOGGER.debug(msg);
  }

  publicstaticvoidi(String msg){
    LOGGER.info(msg);
  }

  publicstaticvoidw(String msg){
    LOGGER.warn(msg);
  }

  publicstaticvoide(String msg){
    LOGGER.error(msg);
  }
}

@Controller
public classWebController{
  @RequestMapping("/")
  publicStringindex(){
    String msg = "Spring Boot系列之Log4j2的配置及使用";
    L.t(msg);
    L.d(msg);
    L.i(msg);
    L.w(msg);
    L.e(msg);
    return "index";
  }
}

<!-- 日志文件目錄和壓縮文件目錄配置 -->
<Properties>
  <Propertyname="fileName">/home/kylin/log/knight/spring_log</Property>
  <Propertyname="fileGz">/home/kylin/log/knight/spring_log/7z</Property>
</Properties>