Log4j.xml配置（rolling示例）

Log4j.xml配置（很详细）

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

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

<log4j:configuration>

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

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

            <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH\:mm\:ss\:SSS}][%p](%c{1}\:%L) - %m%n"/>

        </layout>

    </appender>

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

        <param name="File" value="../logs/jdbc_agent.log"/>

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

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

        <param name="MaxFileSize" value="100MB" />  

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

            <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH\:mm\:ss\:SSS}][%p](%c{1}\:%L) - %m%n"/>

        </layout>

    </appender>

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

        <param name="File" value="../logs/jdbc_agent_error.log"/>

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

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

        <param name="MaxFileSize" value="50MB" />  

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

            <param name="ConversionPattern" value="[%d{yyyy-MM-dd HH\:mm\:ss\:SSS}][%p](%c{1}\:%L) - %m%n"/>

        </layout>

        <filter class="org.apache.log4j.varia.LevelRangeFilter">

            <param name="LevelMin" value="ERROR" />

            <param name="LevelMax" value="ERROR" />

        </filter>

    </appender>

    <logger name="com.ai.toptea.collection" additivity="false">

        <level value="DEBUG"/>

        <appender-ref ref="FILE"/>

        <appender-ref ref="ERROR_FILE"/>

    </logger>

    <root>

        <priority value="INFO"/>

        <appender-ref ref="FILE"/>

        <appender-ref ref="ERROR_FILE"/>

    </root>

</log4j:configuration>