log4j:ERROR 试图追加到名为[...]的已关闭的appender。[英] log4j:ERROR Attempted to append to closed appender named [..]

问题描述

I am getting following errors on my console repeatedly

log4j:ERROR Attempted to append to closed appender named [ConsoleAppender].
log4j:ERROR Attempted to append to closed appender named [FixedWindowRollingFile].

used log4j.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">
    <appender class="org.apache.log4j.rolling.RollingFileAppender" name="FixedWindowRollingFile">
        <param name="Append" value="true"/>
        <param name="ImmediateFlush" value="true"/>

        <rollingPolicy class="org.apache.log4j.rolling.FixedWindowRollingPolicy">
            <param name="fileNamePattern" value="logs/StandardizeAccountService.%i.log"/>
            <param name="minIndex" value="1"/>
            <param name="maxIndex" value="10"/>
        </rollingPolicy>
        <triggeringPolicy class="org.apache.log4j.rolling.SizeBasedTriggeringPolicy">
            <param name="MaxFileSize" value="1002400"/>
        </triggeringPolicy>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{yyyy-MM-dd HH:mm:ss} %p %c{1}:%L - %m%n"/>
        </layout>
    </appender>

    <appender name="ConsoleAppender" class="org.apache.log4j.ConsoleAppender">
        <layout class="org.apache.log4j.SimpleLayout"/>
    </appender>

    <logger name="com.arosys" additivity="false" >
        <level value="INFO" />
        <appender-ref ref="ConsoleAppender" />
        <appender-ref ref="FixedWindowRollingFile"/>
    </logger>

    <root>
        <priority value="INFO"/>
        <appender-ref ref="ConsoleAppender"/>
        <appender-ref ref="FixedWindowRollingFile"/>
    </root>
</log4j:configuration>

please help me where the problem.

推荐答案

I've answered similar question here: https://stackoverflow.com/a/9973283/340290

In my case, I've two log4j.properties available to the Log4J: one via placing it in classpath and other being loaded programmatically (using PropertyConfigurator.configure(..)).

And in the two files, I've ConsoleAppender registered with same name stdout and used for same category twice (one per each properties file). Removing config or the properties file solved my issue.

其他推荐答案

I got the same error:

log4j:ERROR Attempted to append to closed appender named [rollingFileAppender].

In my log4j.xml

I have two loggers with the same name like below

<logger name="java.sql.PreparedStatement" additivity="false">
    <level value="INFO"/>
    <appender-ref ref="rollingFileAppender"/>
</logger>

 <logger name="java.sql.PreparedStatement">
    <level value="INFO"/>
    <appender-ref ref="rollingFileAppender"/>
</logger>

I removed the duplicate, it worked.

其他推荐答案

One could overwrite the configuration using:

BasicConfigurator.resetConfiguration();
PropertyConfigurator.configure(props);