log4j有针对性的将日志输出到不同文件且不重复输出到root中

来源：互联网发布：中国社交网络发展历程编辑：程序博客网时间：2024/05/16 04:49

需求描述：将消费的队列情况单独生成到一个日志文件中，防止消息丢失找回。
做如下log4j配置

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"><log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>     <appender name="myConsole" class="org.apache.log4j.ConsoleAppender">           <layout class="org.apache.log4j.PatternLayout">                <param name="ConversionPattern" value="[%d{MM-dd HH:mm:ss,SSS\} %-5p] [%t] %c{2\} - %m%n" />           </layout>           <filter class="org.apache.log4j.varia.LevelRangeFilter">                <param name="levelMin" value="info" />                <param name="levelMax" value="off" />                <param name="AcceptOnMatch" value="true" />           </filter>     </appender>     <appender name="activexAppender" class="org.apache.log4j.DailyRollingFileAppender">           <param name="File" value="../log/test.log" />           <param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />           <layout class="org.apache.log4j.PatternLayout">                <param name="ConversionPattern"                     value="[%d{MM-dd HH:mm:ss SSS\} %-5p] [%t] %c{3\} - %m%n" />           </layout>     </appender>     <!-- 新增加的日志记录 -->     <appender name="queueAppender" class="org.apache.log4j.DailyRollingFileAppender">           <param name="File" value="../log/myTest.log" />           <param name="DatePattern" value="'.'yyyy-MM-dd'.log'" />           <layout class="org.apache.log4j.PatternLayout">                <param name="ConversionPattern" value="[%d{MM-dd HH:mm:ss SSS\} %-5p] [%t] %c{3\} - %m%n" />           </layout>     </appender>     <logger name="queueLog" additivity="false">       <level value="info"/>       <appender-ref ref="queueAppender"/>     </logger>     <!--新增结束  -->     <root>           <priority value="info" />           <appender-ref ref="myConsole" />           <appender-ref ref="activexAppender" />     </root></log4j:configuration>

logger 为不同的文件使用不同的log配置 additivity=”false”表示不继承父logger的配置，这个log不会将日志反馈到root中:

private static Log logger = LogFactory.getLog(ConsumeQueue.class);     //用于单独记录消费队列private static Log queueLog = LogFactory.getLog("queueLog");

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