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🔖 log4j2 示例
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‎codes/javalib/log/log4j2-demo/pom.xml‎

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<?xml version="1.0"?>
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<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
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xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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<modelVersion>4.0.0</modelVersion>
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<!-- [Part 1] BASIC SETTINGS BEGIN -->
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<!-- MAVEN COORDINATE BEGIN -->
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<groupId>io.github.dunwu</groupId>
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<artifactId>javalib-log-log4j2</artifactId>
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<version>1.0.0</version>
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<packaging>jar</packaging>
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<!-- MAVEN COORDINATE END -->
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<!-- RELATIONSHIP SETTINGS BEGIN -->
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<dependencies>
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<!-- log start -->
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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<version>1.7.25</version>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-slf4j-impl</artifactId>
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<version>2.11.0</version>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-api</artifactId>
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<version>2.11.0</version>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-core</artifactId>
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<version>2.11.0</version>
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</dependency>
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<!-- log end -->
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<!-- RELATIONSHIP SETTINGS END -->
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<!-- PROPERTIES BEGIN -->
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<java.version>1.8</java.version>
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<maven.compiler.source>${java.version}</maven.compiler.source>
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<maven.compiler.target>${java.version}</maven.compiler.target>
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</properties>
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<!-- PROPERTIES END -->
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<!-- [Part 1] BASIC SETTINGS END -->
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<!-- [Part 2] BUILD SETTINGS BEGIN -->
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<build>
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<resources>
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<resource>
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<filtering>true</filtering>
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<directory>src/main/resources</directory>
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</resource>
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</resources>
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</build>
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<!-- [Part 2] BUILD SETTINGS END -->
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<!-- [Part 3] PROJECT INFO BEGIN -->
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<name>${project.artifactId}</name>
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<description>log4j2 示例</description>
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<!-- [Part 3] PROJECT INFO END -->
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</project>

‎codes/javalib/log/log4j2-demo/src/main/java/io/github/dunwu/javalib/log/Log4j2Demo.java‎

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package io.github.dunwu.javalib.log;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Logback 示例
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* @author Zhang Peng
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* @date 2018/3/29
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* @see <a href="https://logback.qos.ch/">logback 官网</a>
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*/
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public class Log4j2Demo {
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private static final Logger logger = LoggerFactory.getLogger(Log4j2Demo.class);
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public static void main(String[] args) {
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for (int i = 0; i < 10; i++) {
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logger.trace("NO.{} 这是一条 {} 日志记录", i, "trace");
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logger.debug("NO.{} 这是一条 {} 日志记录", i, "debug");
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logger.info("NO.{} 这是一条 {} 日志记录", i, "info");
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logger.warn("NO.{} 这是一条 {} 日志记录", i, "warn");
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logger.error("NO.{} 这是一条 {} 日志记录", i, "error");
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}
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}
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}

‎codes/javalib/log/log4j2-demo/src/main/resources/log4j2.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<Configuration>
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<properties>
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<property name="fileName" value="javalib-log4j2"/>
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<property name="logPath" value="D:\home\log"/>
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<property name="logPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} [javalib] [%t] [%-5level] %c{36}#%M - %msg%n"/>
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</properties>
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<Appenders>
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<Console name="Console" target="SYSTEM_OUT">
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<PatternLayout pattern="${logPattern}"/>
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</Console>
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<RollingFile name="Trace" fileName="${logPath}/${fileName}-trace.log"
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filePattern="${logPath}/$${date:yyyy-MM}/${fileName}-trace-%d{yyyy-MM-dd}-%i.log.gz">
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<PatternLayout>
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<Pattern>${logPattern}</Pattern>
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</PatternLayout>
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<Filters>
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<ThresholdFilter level="trace" onMatch="ACCEPT" onMismatch="DENY"/>
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</Filters>
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<Policies>
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<TimeBasedTriggeringPolicy interval="1" modulate="true"/>
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<SizeBasedTriggeringPolicy size="250 MB"/>
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</Policies>
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<DefaultRolloverStrategy>
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<Delete basePath="${logPath}" maxDepth="2">
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<IfFileName glob="*/${fileName}-trace-*.log.gz" />
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<IfLastModified age="30d" />
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</Delete>
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</DefaultRolloverStrategy>
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</RollingFile>
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<RollingFile name="Debug" fileName="${logPath}/${fileName}-debug.log"
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filePattern="${logPath}/$${date:yyyy-MM}/${fileName}-debug-%d{yyyy-MM-dd}-%i.log.gz">
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<PatternLayout>
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<Pattern>${logPattern}</Pattern>
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</PatternLayout>
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<Filters>
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<ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
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</Filters>
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<Policies>
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<TimeBasedTriggeringPolicy interval="1" modulate="true"/>
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<SizeBasedTriggeringPolicy size="250 MB"/>
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</Policies>
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<DefaultRolloverStrategy>
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<Delete basePath="${logPath}" maxDepth="2">
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<IfFileName glob="*/${fileName}-debug-*.log.gz" />
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<IfLastModified age="30d" />
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</Delete>
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</DefaultRolloverStrategy>
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</RollingFile>
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<RollingFile name="Info" fileName="${logPath}/${fileName}-info.log"
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filePattern="${logPath}/$${date:yyyy-MM}/${fileName}-info-%d{yyyy-MM-dd}-%i.log.gz">
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<PatternLayout>
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<Pattern>${logPattern}</Pattern>
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</PatternLayout>
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<Filters>
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<ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY"/>
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</Filters>
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<Policies>
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<TimeBasedTriggeringPolicy interval="1" modulate="true"/>
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<SizeBasedTriggeringPolicy size="250 MB"/>
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</Policies>
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<DefaultRolloverStrategy>
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<Delete basePath="${logPath}" maxDepth="2">
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<IfFileName glob="*/${fileName}-info-*.log.gz" />
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<IfLastModified age="30d" />
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</Delete>
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</DefaultRolloverStrategy>
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</RollingFile>
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<RollingFile name="Warn" fileName="${logPath}/${fileName}-warn.log"
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filePattern="${logPath}/$${date:yyyy-MM}/${fileName}-warn-%d{yyyy-MM-dd}-%i.log.gz">
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<PatternLayout>
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<Pattern>${logPattern}</Pattern>
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</PatternLayout>
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<Filters>
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<ThresholdFilter level="WARN" onMatch="ACCEPT" onMismatch="DENY"/>
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</Filters>
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<Policies>
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<TimeBasedTriggeringPolicy interval="1" modulate="true"/>
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<SizeBasedTriggeringPolicy size="250 MB"/>
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</Policies>
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<DefaultRolloverStrategy>
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<Delete basePath="${logPath}" maxDepth="2">
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<IfFileName glob="*/${fileName}-warn-*.log.gz" />
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<IfLastModified age="30d" />
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</Delete>
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</DefaultRolloverStrategy>
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</RollingFile>
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<RollingFile name="Error" fileName="${logPath}/${fileName}-error.log"
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filePattern="${logPath}/$${date:yyyy-MM}/${fileName}-error-%d{yyyy-MM-dd}-%i.log.gz">
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<PatternLayout>
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<Pattern>${logPattern}</Pattern>
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</PatternLayout>
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<Filters>
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<ThresholdFilter level="ERROR" onMatch="ACCEPT" onMismatch="DENY"/>
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</Filters>
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<Policies>
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<TimeBasedTriggeringPolicy interval="1" modulate="true"/>
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<SizeBasedTriggeringPolicy size="250 MB"/>
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</Policies>
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<DefaultRolloverStrategy>
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<Delete basePath="${logPath}" maxDepth="2">
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<IfFileName glob="*/${fileName}-error-*.log.gz" />
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<IfLastModified age="30d" />
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</Delete>
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</DefaultRolloverStrategy>
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</RollingFile>
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</Appenders>
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<Loggers>
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<Logger name="io.github.dunwu.javalib.log" level="trace" additivity="false">
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<AppenderRef ref="Trace"/>
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<AppenderRef ref="Debug"/>
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<AppenderRef ref="Info"/>
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<AppenderRef ref="Warn"/>
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<AppenderRef ref="Error"/>
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</Logger>
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<Root level="trace">
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<AppenderRef ref="Console"/>
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</Root>
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</Loggers>
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</Configuration>

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