#log4j.xml

[aw0reborn]

Set log4j in Intellij IDEA 2019 and configuration of log4j.xml

Set log4j in Intellij IDEA 2019 and configuration of log4j.xml

Prerequisites 1::Download IntelliJ IDEA

2::Make a Hello World project

When you try to import

import org.apache.log4j.ConsoleAppender; import org.apache.log4j.Level; import org.apache.log4j.Logger; import org.apache.log4j.SimpleLayout; import org.apache.log4j.PatternLayout;

it shows an error.

So how to make this work

Follow these few steps.

Step 1: press (shift+Ctrl+Alt+S)

Open the project…

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log4j.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">

<!-- Appenders -->

<appender name="stdout" class="org.apache.log4j.ConsoleAppender"> 

<param name="Target" value="System.out"/> 

<layout class="org.apache.log4j.PatternLayout"> 

<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p %C [%M :%L] %m%n" />

</layout> 

</appender> 

<!--  날짜별 로그 -->  

<appender name="dailyRollingFile" class="org.apache.log4j.DailyRollingFileAppender">  

<!-- LOCAL -->

<param name="file" value="D:/LOG/rogm.log"/>  

<param name="Append" value="true"/>  

<param name="DatePattern" value="'.'yyyyMMdd"/>  

<layout class="org.apache.log4j.PatternLayout">

<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p %C [%M :%L] %m%n" />

</layout>  

</appender>  

<!-- 특정 크기마다 백업하며 로그 

<appender name="rolling" class="org.apache.log4j.RollingFileAppender">

<param name="file" value=""/>

<param name="Append" value="true"/>

<param name="MaxFileSize" value="10kb"/>

<param name="MaxBackupIndex" value="10"/>

<layout class="org.apache.log4j.PatternLayout">

<param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p %C [%M :%L] %m%n" />

</layout>

</appender>  

-->

<!-- 특정 로거 설정 -->

<logger name="com.rogm" additivity="true">

<level value="WARN" />

<appender-ref ref="stdout" />

<appender-ref ref="dailyRollingFile" />

</logger>

<!-- root 로거 설정 -->

<root>

<priority value="DEBUG" />

<!-- <priority value="DEBUG" /> -->

<!-- <priority value="INFO" /> -->

<appender-ref ref="stdout" />

<appender-ref ref="dailyRollingFile" />

</root>    

</log4j:configuration>